×
验证码:
换一张
Forgotten Password?
Stay signed in
×
Log In
Chinese
|
English
中国科学院昆明植物研究所知识管理系统
Knowledge Management System of Kunming Institute of Botany,CAS
Log In
Register
ALL
ORCID
Title
Creator
Subject Area
Keyword
Funding Project
Document Type
Source Publication
Indexed By
Publisher
Date Issued
Date Accessioned
MOST Discipline Catalogue
Study Hall
Image search
Paste the image URL
Home
Collections
Authors
DocType
Subjects
K-Map
News
Search in the results
Collection
中国科学院东亚植... [164]
共享文献 [161]
昆明植物所硕博研究... [90]
中国西南野生生物种... [67]
资源植物与生物技术... [38]
植物化学与西部植物... [14]
More...
Authors
李德铢 [79]
Sun Hang [42]
王红 [35]
周浙昆 [27]
伊廷双 [22]
邓涛 [22]
More...
Document Type
Journal ... [519]
Thesis [90]
Book [22]
Academic p... [1]
Conference... [1]
Other [1]
More...
Date Issued
2021 [25]
2020 [45]
2019 [48]
2018 [34]
2017 [51]
2016 [36]
More...
Language
英语 [374]
中文 [91]
Source Publication
MOLECULAR... [27]
PLOS ONE [24]
JOURNAL O... [22]
FUNGAL DI... [20]
BOTANICAL... [16]
American ... [13]
More...
Funding Project
GST,p < 0.001) and low levels of seed-based gene flow. C. debaoensis (Cycadaceae) is an endangered species restricted to the border of Guangxi and Yunnan province in southwest China. This species has been classified into two types: sand and karst, according to the soil matrix they grow on. We examined chloroplast sequence variation of the cpDNA sequences from 11 populations of this species. Significant population genetic differentiation was detected (GST= 0.684 and FST = 0.74160). There was marked genetic differentiation between populations in the sand and karst regions and no expansion was detected. Climate changes during glacial periods have had significant effects on the current distribution of cycads. The molecular phylogenetic data, together with the geographic distribution of the haplotypes, suggest that C. debaoensis experienced range contraction during glacial periods, and that the current populations are still confined to the original refugia in southwest China which have favorable habitats in glacial period. These results imply that small refugia were maintained in both sand and karst regions during the LGM (last glacial maximum). This species had no postglacial recolonization and only stayed in these refugia up to now. The low within-population diversity of C. debaoensis suggests that there were strong bottleneck events or founder effects within each separate region during the Quaternary climatic oscillations. Relatively high genetic and haplotype diversities were detected in the newly discovered populations, which located at intermediate locality of sand regions and had morphological variation; this is probably the consequence of the admixture of different haplotypes colonizing the area from separate sources. C. micholitzii occurs in the Annan Highlands in central Vietnam near the Laos border. C. bifida occurs in North Vietnam; its distribution extends across the border into adjacent localities in Guangxi and Yunnan in China. For the comparability between them,theywere considered as the same species C. micholitzii by many academicians. The cpDNA sequences from 11 populations showed that these very controversial species, C. micholitzii and C. bifida, is paraphyletic and should belong to the same species C. micholitzii. AMOVA analysis showed that the component of among-population within region/species (76.46%) was unexpectedly larger than the among-species/region component (14.97%), which also indicates that there is no justification for recognizing two species as C. micholitzii and C. bifida. This hypothesis was also supported by the geological data, especially the neotectonic history of the indo-china block, which started to move south since Oligocene and cause the geographic isolation of these two groups. Therefore, the most likely explanation to the phenotypic similarities between these two groups may be the retention of ancestral polymorphisms in the paraphyletic group due to incomplete lineage sorting. Furthermore, the similarities may also be ascribed to pollen-mediated gene flow among geographically proximate populations and/or phenotypic convergence under similar selection schemes in the same region. C.micholitzi had the higest genetic diversity (HT = 0.980,) and genetic differentiation (GST = 0.830, NST = 0.915) among the C. micholitzii complex. The high genetic diversity might be attributed to its long evolutionary history, highly diverse habitats. The ineffective mode of seed dispersal and dramatic neotectonic movement in the distribution range of this species could result in the high genetic differentiation. 2. Phylogeographic analysis based on nuclear ribosomal sequences, We sequenced the nrDNA ITS in all 27 populations sampled, 7 haplotypes were identified, among which C. micholitzii had 6, while C. multipinnata, C. longipetiolula and C. debaoensis shared the remaining one. Compared to chloroplast genes, nuclear genes had higher correlation between genetic and geographical distance, but lower interspecies differentiation (54.42% vs 25.24%). Phylogeographical structure of C. micholitzii and C.bifida based on ITS Variation was consistent with the morphology differentiation. This similar in nuclear gene should be ascribed to pollen-mediated gene flow among geographically proximate populations.Long-distance gene flow over the two groups was clearly interrupted, which brought on the nrDNA genetic differenciation between the geographically isolated groups, to a certain extent affected the morphological variation. 3. Interspecies relationships among Cycas micholitzii complex, We analysed chloroplast sequence variation of the atpB-rbcL and psbA-trnH intergenic spacers in 27 populations sampled of C. micholitzii complex, AMOVA analysis showed that the component of among-species/region component (59.21%). However, phylogenic analysis showed that the haplotypes of C. micholitzii complex couldn`t grouped into four clusters closely corresponding to the narrowly defined C. micholitzi, C. multipinnata, C. debaoensis and C. longipetiolula. We concluded that the conflict may result from several factors: firstly incomplete lineage sorting of C. micholitzii; secondly hybridization/introgression of sympatrically cycads, which would be supported by evidence base on nrDNA ITS sequences; thirdly intramolecular recombination in cpDNA of cycads; eventually the neotectonic movement in the distribution range of this species.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Basal%2BAngiosperms&order=desc&&fq=dc.project.title_filter%3ACycas%5C+micholitzii%5C+complex%5C+is%5C+composed%5C+of%5C+5%5C+species%5C%3A%5C+C.%5C+micholitzii%5C+Dyer%2C%5C+C.%5C+bifida%5C+%5C%28Dyer%5C%29%5C+K.%5C+D.%5C+Hill%2CC.%5C+longipetiolula%5C+D.%5C+Y.%5C+Wang%2C%5C+C.%5C+debaoensis%5C+Y.%5C+C.%5C+Zhong%5C+et%5C+C%5C+J.%5C+Chen%2C%5C+C.%5C+multipinnata%5C+C%5C+J.%5C+Chen%5C+et%5C+S.%5C+Y.%5C+Yang%EF%BC%8Cand%5C+distributed%5C+from%5C+southwest%5C+China%5C+to%5C+central%5C+Vietnam%5C+and%5C+eastern%5C+Laos.%5C+Based%5C+on%5C+sequence%5C+data%5C+from%5C+two%5C+maternally%5C+inherited%5C+cpDNA%5C+and%5C+one%5C+biparentally%5C+nuclear%5C+DNA%5C+fragments%2C%5C+our%5C+study%5C+revealed%5C+the%5C+population%5C+genetic%5C+structure%5C+of%5C+C.%5C+micholitzii%5C+complex%5C+and%5C+explored%5C+the%5C+potential%5C+causes.%5C+The%5C+evolutionary%5C+and%5C+demographic%5C+histories%5C+were%5C+investigated.%5C+The%5C+genetic%5C+relationship%5C+among%5C+species%5C+in%5C+the%5C+complex%5C+was%5C+also%5C+clarified.The%5C+results%5C+were%5C+summarized%5C+as%5C+follows%5C%3A%5C+1.%5C+Phylogeographic%5C+analysis%5C+based%5C+on%5C+chloroplast%5C+sequences%EF%BC%8CWe%5C+examined%5C+chloroplast%5C+sequence%5C+variation%5C+of%5C+the%5C+atpB%5C-rbcLand%5C+psbA%5C-trnHintergenic%5C+spacers%5C+in%5C+27%5C+populations%5C+of%5C+C.%5C+micholitzii%5C+complex%2C%5C+recovering%5C+26%5C+haplotypes.%5C+The%5C+average%5C+within%5C-population%5C+diversity%5C+%5C%28HS%5C+%3D%5C+0.140%5C%29%5C+was%5C+low%5C+while%5C+total%5C+diversity%5C+%5C%28HT%5C+%3D%5C+0.911%5C%29%5C+was%5C+high.%5C+Population%5C+differentiation%5C+was%5C+also%5C+high%5C%28GST%5C+%3D%5C+0.846%2C%5C+NST%5C+%3D%5C+0.919%5C%29%2C%5C+indicating%5C+significant%5C+phylogeographical%5C+structure%5C+%5C%28NST%5C+%3E%5C+GST%2Cp%5C+%3C%5C+0.001%5C%29%5C+and%5C+low%5C+levels%5C+of%5C+seed%5C-based%5C+gene%5C+flow.%5C+C.%5C+debaoensis%5C+%5C%28Cycadaceae%5C%29%5C+is%5C+an%5C+endangered%5C+species%5C+restricted%5C+to%5C+the%5C+border%5C+of%5C+Guangxi%5C+and%5C+Yunnan%5C+province%5C+in%5C+southwest%5C+China.%5C+This%5C+species%5C+has%5C+been%5C+classified%5C+into%5C+two%5C+types%5C%3A%5C+sand%5C+and%5C+karst%2C%5C+according%5C+to%5C+the%5C+soil%5C+matrix%5C+they%5C+grow%5C+on.%5C+We%5C+examined%5C+chloroplast%5C+sequence%5C+variation%5C+of%5C+the%5C+cpDNA%5C+sequences%5C+from%5C+11%5C+populations%5C+of%5C+this%5C+species.%5C+Significant%5C+population%5C+genetic%5C+differentiation%5C+was%5C+detected%5C+%5C%28GST%3D%5C+0.684%5C+and%5C+FST%5C+%3D%5C+0.74160%5C%29.%5C+There%5C+was%5C+marked%5C+genetic%5C+differentiation%5C+between%5C+populations%5C+in%5C+the%5C+sand%5C+and%5C+karst%5C+regions%5C+and%5C+no%5C+expansion%5C+was%5C+detected.%5C+Climate%5C+changes%5C+during%5C+glacial%5C+periods%5C+have%5C+had%5C+significant%5C+effects%5C+on%5C+the%5C+current%5C+distribution%5C+of%5C+cycads.%5C+The%5C+molecular%5C+phylogenetic%5C+data%2C%5C+together%5C+with%5C+the%5C+geographic%5C+distribution%5C+of%5C+the%5C+haplotypes%2C%5C+suggest%5C+that%5C+C.%5C+debaoensis%5C+experienced%5C+range%5C+contraction%5C+during%5C+glacial%5C+periods%2C%5C+and%5C+that%5C+the%5C+current%5C+populations%5C+are%5C+still%5C+confined%5C+to%5C+the%5C+original%5C+refugia%5C+in%5C+southwest%5C+China%5C+which%5C+have%5C+favorable%5C+habitats%5C+in%5C+glacial%5C+period.%5C+These%5C+results%5C+imply%5C+that%5C+small%5C+refugia%5C+were%5C+maintained%5C+in%5C+both%5C+sand%5C+and%5C+karst%5C+regions%5C+during%5C+the%5C+LGM%5C+%5C%28last%5C+glacial%5C+maximum%5C%29.%5C+This%5C+species%5C+had%5C+no%5C+postglacial%5C+recolonization%5C+and%5C+only%5C+stayed%5C+in%5C+these%5C+refugia%5C+up%5C+to%5C+now.%5C+The%5C+low%5C+within%5C-population%5C+diversity%5C+of%5C+C.%5C+debaoensis%5C+suggests%5C+that%5C+there%5C+were%5C+strong%5C+bottleneck%5C+events%5C+or%5C+founder%5C+effects%5C+within%5C+each%5C+separate%5C+region%5C+during%5C+the%5C+Quaternary%5C+climatic%5C+oscillations.%5C+Relatively%5C+high%5C+genetic%5C+and%5C+haplotype%5C+diversities%5C+were%5C+detected%5C+in%5C+the%5C+newly%5C+discovered%5C+populations%2C%5C+which%5C+located%5C+at%5C+intermediate%5C+locality%5C+of%5C+sand%5C+regions%5C+and%5C+had%5C+morphological%5C+variation%5C%3B%5C+this%5C+is%5C+probably%5C+the%5C+consequence%5C+of%5C+the%5C+admixture%5C+of%5C+different%5C+haplotypes%5C+colonizing%5C+the%5C+area%5C+from%5C+separate%5C+sources.%5C+%5C+C.%5C+micholitzii%5C+occurs%5C+in%5C+the%5C+Annan%5C+Highlands%5C+in%5C+central%5C+Vietnam%5C+near%5C+the%5C+Laos%5C+border.%5C+C.%5C+bifida%5C+occurs%5C+in%5C+North%5C+Vietnam%5C%3B%5C+its%5C+distribution%5C+extends%5C+across%5C+the%5C+border%5C+into%5C+adjacent%5C+localities%5C+in%5C+Guangxi%5C+and%5C+Yunnan%5C+in%5C+China.%5C+For%5C+the%5C+comparability%5C+between%5C+them%2Ctheywere%5C+considered%5C+as%5C+the%5C+same%5C+species%5C+C.%5C+micholitzii%5C+by%5C+many%5C+academicians.%5C+The%5C+cpDNA%5C+sequences%5C+from%5C+11%5C+populations%5C+showed%5C+that%5C+these%5C+very%5C+controversial%5C+species%2C%5C+C.%5C+micholitzii%5C+and%5C+C.%5C+bifida%2C%5C+is%5C+paraphyletic%5C+and%5C+should%5C+belong%5C+to%5C+the%5C+same%5C+species%5C+C.%5C+micholitzii.%5C+AMOVA%5C+analysis%5C+showed%5C+that%5C+the%5C+component%5C+of%5C+among%5C-population%5C+within%5C+region%5C%2Fspecies%5C+%5C%2876.46%25%5C%29%5C+was%5C+unexpectedly%5C+larger%5C+than%5C+the%5C+among%5C-species%5C%2Fregion%5C+component%5C+%5C%2814.97%25%5C%29%2C%5C+which%5C+also%5C+indicates%5C+that%5C+there%5C+is%5C+no%5C+justification%5C+for%5C+recognizing%5C+two%5C+species%5C+as%5C+C.%5C+micholitzii%5C+and%5C+C.%5C+bifida.%5C+This%5C+hypothesis%5C+was%5C+also%5C+supported%5C+by%5C+the%5C+geological%5C+data%2C%5C+especially%5C+the%5C+neotectonic%5C+history%5C+of%5C+the%5C+indo%5C-china%5C+block%2C%5C+which%5C+started%5C+to%5C+move%5C+south%5C+since%5C+Oligocene%5C+and%5C+cause%5C+the%5C+geographic%5C+isolation%5C+of%5C+these%5C+two%5C+groups.%5C+Therefore%2C%5C+the%5C+most%5C+likely%5C+explanation%5C+to%5C+the%5C+phenotypic%5C+similarities%5C+between%5C+these%5C+two%5C+groups%5C+may%5C+be%5C+the%5C+retention%5C+of%5C+ancestral%5C+polymorphisms%5C+in%5C+the%5C+paraphyletic%5C+group%5C+due%5C+to%5C+incomplete%5C+lineage%5C+sorting.%5C+Furthermore%2C%5C+the%5C+similarities%5C+may%5C+also%5C+be%5C+ascribed%5C+to%5C+pollen%5C-mediated%5C+gene%5C+flow%5C+among%5C+geographically%5C+proximate%5C+populations%5C+and%5C%2For%5C+phenotypic%5C+convergence%5C+under%5C+similar%5C+selection%5C+schemes%5C+in%5C+the%5C+same%5C+region.%5C+C.micholitzi%5C+had%5C+the%5C+higest%5C+genetic%5C+diversity%5C+%5C%28HT%5C+%3D%5C+0.980%2C%5C%29%5C+and%5C+genetic%5C+differentiation%5C+%5C%28GST%5C+%3D%5C+0.830%2C%5C+NST%5C+%3D%5C+0.915%5C%29%5C+among%5C+the%5C+C.%5C+micholitzii%5C+complex.%5C+The%5C+high%5C+genetic%5C+diversity%5C+might%5C+be%5C+attributed%5C+to%5C+its%5C+long%5C+evolutionary%5C+history%2C%5C+highly%5C+diverse%5C+habitats.%5C+The%5C+ineffective%5C+mode%5C+of%5C+seed%5C+dispersal%5C+and%5C+dramatic%5C+neotectonic%5C+movement%5C+in%5C+the%5C+distribution%5C+range%5C+of%5C+this%5C+species%5C+could%5C+result%5C+in%5C+the%5C+high%5C+genetic%5C+differentiation.%5C+2.%5C+Phylogeographic%5C+analysis%5C+based%5C+on%5C+nuclear%5C+ribosomal%5C+sequences%2C%5C+We%5C+sequenced%5C+the%5C+nrDNA%5C+ITS%5C+in%5C+all%5C+27%5C+populations%5C+sampled%2C%5C+7%5C+haplotypes%5C+were%5C+identified%2C%5C+among%5C+which%5C+C.%5C+micholitzii%5C+had%5C+6%2C%5C+while%5C+C.%5C+multipinnata%2C%5C+C.%5C+longipetiolula%5C+and%5C+C.%5C+debaoensis%5C+shared%5C+the%5C+remaining%5C+one.%5C+Compared%5C+to%5C+chloroplast%5C+genes%2C%5C+nuclear%5C+genes%5C+had%5C+higher%5C+correlation%5C+between%5C+genetic%5C+and%5C+geographical%5C+distance%2C%5C+but%5C+lower%5C+interspecies%5C+differentiation%5C+%5C%2854.42%25%5C+vs%5C+25.24%25%5C%29.%5C+Phylogeographical%5C+structure%5C+of%5C+C.%5C+micholitzii%5C+and%5C+C.bifida%5C+based%5C+on%5C+ITS%5C+Variation%5C+was%5C+consistent%5C+with%5C+the%5C+morphology%5C+differentiation.%5C+This%5C+similar%5C+in%5C+nuclear%5C+gene%5C+should%5C+be%5C+ascribed%5C+to%5C+pollen%5C-mediated%5C+gene%5C+flow%5C+among%5C+geographically%5C+proximate%5C+populations.Long%5C-distance%5C+gene%5C+flow%5C+over%5C+the%5C+two%5C+groups%5C+was%5C+clearly%5C+interrupted%2C%5C+which%5C+brought%5C+on%5C+the%5C+nrDNA%5C+genetic%5C+differenciation%5C+between%5C+the%5C+geographically%5C+isolated%5C+groups%2C%5C+to%5C+a%5C+certain%5C+extent%5C+affected%5C+the%5C+morphological%5C+variation.%5C+3.%5C+Interspecies%5C+relationships%5C+among%5C+Cycas%5C+micholitzii%5C+complex%2C%5C+We%5C+analysed%5C+chloroplast%5C+sequence%5C+variation%5C+of%5C+the%5C+atpB%5C-rbcL%5C+and%5C+psbA%5C-trnH%5C+intergenic%5C+spacers%5C+in%5C+27%5C+populations%5C+sampled%5C+of%5C+C.%5C+micholitzii%5C+complex%2C%5C+AMOVA%5C+analysis%5C+showed%5C+that%5C+the%5C+component%5C+of%5C+among%5C-species%5C%2Fregion%5C+component%5C+%5C%2859.21%25%5C%29.%5C+However%2C%5C+phylogenic%5C+analysis%5C+showed%5C+that%5C+the%5C+haplotypes%5C+of%5C+C.%5C+micholitzii%5C+complex%5C+couldn%60t%5C+grouped%5C+into%5C+four%5C+clusters%5C+closely%5C+corresponding%5C+to%5C+the%5C+narrowly%5C+defined%5C+C.%5C+micholitzi%2C%5C+C.%5C+multipinnata%2C%5C+C.%5C+debaoensis%5C+and%5C+C.%5C+longipetiolula.%5C+We%5C+concluded%5C+that%5C+the%5C+conflict%5C+may%5C+result%5C+from%5C+several%5C+factors%5C%3A%5C+firstly%5C+incomplete%5C+lineage%5C+sorting%5C+of%5C+C.%5C+micholitzii%5C%3B%5C+secondly%5C+hybridization%5C%2Fintrogression%5C+of%5C+sympatrically%5C+cycads%2C%5C+which%5C+would%5C+be%5C+supported%5C+by%5C+evidence%5C+base%5C+on%5C+nrDNA%5C+ITS%5C+sequences%5C%3B%5C+thirdly%5C+intramolecular%5C+recombination%5C+in%5C+cpDNA%5C+of%5C+cycads%5C%3B%5C+eventually%5C+the%5C+neotectonic%5C+movement%5C+in%5C+the%5C+distribution%5C+range%5C+of%5C+this%5C+species."},{"jsname":"Cytology study can reveal important biological features of plants and answers to a certain degree in phylogeny and distribution of genetic materials and so forth. By hard working of cytologists, chromosome data of plants have been increased to a great abundance, but yet disorderly distributed in different magazines, which made researches based on the whole chromosome data of one taxon rarely launched. Scientific databases have become increasingly indispensable as researching data growing daily. As Cytological studies are booming in China, in order to fill the absence of digital and statistical data of plant chromosome researches and chromosome atlas, we started to develop a Chinese Seed Plants Chromosome Database, aiming to construct a database and start to record published chromosome data of Chinese seed plants. Based on this database, we chose the part of gymnosperms and gave a discussion to the features of its chromosomes’ evolution and variation. Cytological experiments have been applied to some important phyto-groups for phylogeny research and germplasm identification.Part I: The Chinese Seed Plants Chromosome Database and Discussion on the features of Gymnosperms chromosomes，1 The Chinese Seed Plants Chromosome Database，The frame of database was constructed by Microsoft Access 2003. 19 items of data were included in, they are: Chinese and Latin names of family, genus and species; plant pictures, mitosis metaphase and karyotype figures; morphological characteristics and distributions of the plant; chromosome numbers and basic numbers; karyotype formula; karyotype description; origin of the plant material; literature and the source of photos. In this database, data can be checked and shared easily by extracted out in species sorted interface or family sorted interface. 120 species in 29 genera and 10 families of Gymnospers have been collected and input to the database. In Angiosperms, 61 species in 10 genera of family Magnoliaceae and 80 species in 3 genera of family Theaceae have been collected and input to the database.2 Discussion on the features of evolution and variation of Gymnosperms chromosomes，By data collection of the database, we analyzed chromosome features of the group Gymnosperm. Plants of Gymnosperm had been through a long historical evolution on earth, fossil records of which originated from the late Devonian period. Once an authoritative and major classification level in the plant kingdom, most Gymnosperms have been extinct unless conifers, cycads, Ginkgo and Getales. Three main features of Gymnosperm chromosomes are: relatively large chromosome, which can be recognized from figures in the database; constant chromosome numbers, in most families of Gymnosperm the basic chromosome number keeps a certain value; comparatively low variation, karyotype under family level differs a little. The variation of chromosomes in Gymnosperm is dominated by Robertsonian changes. Contrary to common variation type in Angiosperms, the variation from high unsymmetric karyotype to low unsymmetric karyotype was found in existence in Gymnosperm.Part II: cytology research on some important phyto-groups，3 Karyomorphology of three species in the order Huerteales and their phylogenetic implications，The karyomorphology of three species in Dipentodon (Dipentodontaceae), Perrottetia (Celastraceae), and Tapiscia (Tapisciaceae), namely Dipentodon sinicus, Perrottetia racemosa, and Tapiscia sinensis, was investigated in the study. Recent molecular research has discovered close relationships among these three genera, which has led to the establishment of the order Huerteales with Perrottetia being placed in Dipentodontaceae. Herein we report the chromosome numbers of D. sinicus and P. racemosa for the first time, and present their karyotype formulas as 2n = 34 = 22sm + 12st (D. sinicus), 2n = 20 = 11m + 9sm (P. racemosa), and 2n = 30 = 22m(2SAT) + 8sm (T. sinensis). Asymmetry of their karyotypes is categorized to be Type 3B in D. sinicus, Type 2A in P. racemosa, and Type 2A in T. sinensis. Each of the species shows special cytological features. Compared with Perrottetia, Dipentodon has a different basic chromosome number, a higher karyotype asymmetry, and different karyomorphology of its interphase nuclei, mitotic prophase, and metaphase. Thus, on the basis of these results, we have reservations regarding the suggestion of placing Dipentodon and Perrottetia together in the family Dipentodontaceae.4 Genomic analyses of intergeneric hybrids between Michelia crassipes and M. calcicola by GISH，Genomic in situ hybridization (GISH) is becoming the method of choice for identifying parental chromosomes in interspecific hybrids. Interspecific F1 hybrid between Michelia crassipes and M. calcicola, tow highly ornamental species in Michelia of Magnolicaceae, has been analized by double-colored GISH with its parents’ genome as the probe. Research gave the results that the chromosome number of the F1 hybrid is 2n=38 as the same of species in Michelia and other genera in Magnoliaceae, the basic chromosome is x=19, the karyotype formula is 2n=38=32m+6sm, and the asymmetry of karyotype is 1B type. Based on chromosome data of Michelia in our database, the karyotype of this genus is featured mostly by metacentric chromosomes and submetacentric chromosomes. In Mechelia, the variation range of submetacentric chromosomes is 4 to 18 and of the karyotype asymmetry is 1A to 2B type. Both the karyotype and karyotype asymmetry type of F1 hybrid is among the variation range of Michelia. The figure of GISH showed that all the 38 chromosomes of F1 hybrid have crossing parental signals, and signal on the no.1 and no.7 chromosome showed differences, which proved that both the parental genome have been transmitted to and recombinated in F1 hybrid.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Basal%2BAngiosperms&order=desc&&fq=dc.project.title_filter%3ACytology%5C+study%5C+can%5C+reveal%5C+important%5C+biological%5C+features%5C+of%5C+plants%5C+and%5C+answers%5C+to%5C+a%5C+certain%5C+degree%5C+in%5C+phylogeny%5C+and%5C+distribution%5C+of%5C+genetic%5C+materials%5C+and%5C+so%5C+forth.%5C+By%5C+hard%5C+working%5C+of%5C+cytologists%2C%5C+chromosome%5C+data%5C+of%5C+plants%5C+have%5C+been%5C+increased%5C+to%5C+a%5C+great%5C+abundance%2C%5C+but%5C+yet%5C+disorderly%5C+distributed%5C+in%5C+different%5C+magazines%2C%5C+which%5C+made%5C+researches%5C+based%5C+on%5C+the%5C+whole%5C+chromosome%5C+data%5C+of%5C+one%5C+taxon%5C+rarely%5C+launched.%5C+Scientific%5C+databases%5C+have%5C+become%5C+increasingly%5C+indispensable%5C+as%5C+researching%5C+data%5C+growing%5C+daily.%5C+As%5C+Cytological%5C+studies%5C+are%5C+booming%5C+in%5C+China%2C%5C+in%5C+order%5C+to%5C+fill%5C+the%5C+absence%5C+of%5C+digital%5C+and%5C+statistical%5C+data%5C+of%5C+plant%5C+chromosome%5C+researches%5C+and%5C+chromosome%5C+atlas%2C%5C+we%5C+started%5C+to%5C+develop%5C+a%5C+Chinese%5C+Seed%5C+Plants%5C+Chromosome%5C+Database%2C%5C+aiming%5C+to%5C+construct%5C+a%5C+database%5C+and%5C+start%5C+to%5C+record%5C+published%5C+chromosome%5C+data%5C+of%5C+Chinese%5C+seed%5C+plants.%5C+Based%5C+on%5C+this%5C+database%2C%5C+we%5C+chose%5C+the%5C+part%5C+of%5C+gymnosperms%5C+and%5C+gave%5C+a%5C+discussion%5C+to%5C+the%5C+features%5C+of%5C+its%5C+chromosomes%E2%80%99%5C+evolution%5C+and%5C+variation.%5C+Cytological%5C+experiments%5C+have%5C+been%5C+applied%5C+to%5C+some%5C+important%5C+phyto%5C-groups%5C+for%5C+phylogeny%5C+research%5C+and%5C+germplasm%5C+identification.Part%5C+I%5C%3A%5C+The%5C+Chinese%5C+Seed%5C+Plants%5C+Chromosome%5C+Database%5C+and%5C+Discussion%5C+on%5C+the%5C+features%5C+of%5C+Gymnosperms%5C+chromosomes%EF%BC%8C1%5C+%C2%A0The%5C+Chinese%5C+Seed%5C+Plants%5C+Chromosome%5C+Database%EF%BC%8CThe%5C+frame%5C+of%5C+database%5C+was%5C+constructed%5C+by%5C+Microsoft%5C+Access%5C+2003.%5C+19%5C+items%5C+of%5C+data%5C+were%5C+included%5C+in%2C%5C+they%5C+are%5C%3A%5C+Chinese%5C+and%5C+Latin%5C+names%5C+of%5C+family%2C%5C+genus%5C+and%5C+species%5C%3B%5C+plant%5C+pictures%2C%5C+mitosis%5C+metaphase%5C+and%5C+karyotype%5C+figures%5C%3B%5C+morphological%5C+characteristics%5C+and%5C+distributions%5C+of%5C+the%5C+plant%5C%3B%5C+chromosome%5C+numbers%5C+and%5C+basic%5C+numbers%5C%3B%5C+karyotype%5C+formula%5C%3B%5C+karyotype%5C+description%5C%3B%5C+origin%5C+of%5C+the%5C+plant%5C+material%5C%3B%5C+literature%5C+and%5C+the%5C+source%5C+of%5C+photos.%5C+In%5C+this%5C+database%2C%5C+data%5C+can%5C+be%5C+checked%5C+and%5C+shared%5C+easily%5C+by%5C+extracted%5C+out%5C+in%5C+species%5C+sorted%5C+interface%5C+or%5C+family%5C+sorted%5C+interface.%5C+120%5C+species%5C+in%5C+29%5C+genera%5C+and%5C+10%5C+families%5C+of%5C+Gymnospers%5C+have%5C+been%5C+collected%5C+and%5C+input%5C+to%5C+the%5C+database.%5C+In%5C+Angiosperms%2C%5C+61%5C+species%5C+in%5C+10%5C+genera%5C+of%5C+family%5C+Magnoliaceae%5C+and%5C+80%5C+species%5C+in%5C+3%5C+genera%5C+of%5C+family%5C+Theaceae%5C+have%5C+been%5C+collected%5C+and%5C+input%5C+to%5C+the%5C+database.2%5C+Discussion%5C+on%5C+the%5C+features%5C+of%5C+evolution%5C+and%5C+variation%5C+of%5C+Gymnosperms%5C+chromosomes%EF%BC%8CBy%5C+data%5C+collection%5C+of%5C+the%5C+database%2C%5C+we%5C+analyzed%5C+chromosome%5C+features%5C+of%5C+the%5C+group%5C+Gymnosperm.%5C+Plants%5C+of%5C+Gymnosperm%5C+had%5C+been%5C+through%5C+a%5C+long%5C+historical%5C+evolution%5C+on%5C+earth%2C%5C+fossil%5C+records%5C+of%5C+which%5C+originated%5C+from%5C+the%5C+late%5C+Devonian%5C+period.%5C+Once%5C+an%5C+authoritative%5C+and%5C+major%5C+classification%5C+level%5C+in%5C+the%5C+plant%5C+kingdom%2C%5C+most%5C+Gymnosperms%5C+have%5C+been%5C+extinct%5C+unless%5C+conifers%2C%5C+cycads%2C%5C+Ginkgo%5C+and%5C+Getales.%5C+Three%5C+main%5C+features%5C+of%5C+Gymnosperm%5C+chromosomes%5C+are%5C%3A%5C+relatively%5C+large%5C+chromosome%2C%5C+which%5C+can%5C+be%5C+recognized%5C+from%5C+figures%5C+in%5C+the%5C+database%5C%3B%5C+constant%5C+chromosome%5C+numbers%2C%5C+in%5C+most%5C+families%5C+of%5C+Gymnosperm%5C+the%5C+basic%5C+chromosome%5C+number%5C+keeps%5C+a%5C+certain%5C+value%5C%3B%5C+comparatively%5C+low%5C+variation%2C%5C+karyotype%5C+under%5C+family%5C+level%5C+differs%5C+a%5C+little.%5C+The%5C+variation%5C+of%5C+chromosomes%5C+in%5C+Gymnosperm%5C+is%5C+dominated%5C+by%5C+Robertsonian%5C+changes.%5C+Contrary%5C+to%5C+common%5C+variation%5C+type%5C+in%5C+Angiosperms%2C%5C+the%5C+variation%5C+from%5C+high%5C+unsymmetric%5C+karyotype%5C+to%5C+low%5C+unsymmetric%5C+karyotype%5C+was%5C+found%5C+in%5C+existence%5C+in%5C+Gymnosperm.Part%5C+II%5C%3A%5C+cytology%5C+research%5C+on%5C+some%5C+important%5C+phyto%5C-groups%EF%BC%8C3%5C+Karyomorphology%5C+of%5C+three%5C+species%5C+in%5C+the%5C+order%5C+Huerteales%5C+and%5C+their%5C+phylogenetic%5C+implications%EF%BC%8CThe%5C+karyomorphology%5C+of%5C+three%5C+species%5C+in%5C+Dipentodon%5C+%5C%28Dipentodontaceae%5C%29%2C%5C+Perrottetia%5C+%5C%28Celastraceae%5C%29%2C%5C+and%5C+Tapiscia%5C+%5C%28Tapisciaceae%5C%29%2C%5C+namely%5C+Dipentodon%5C+sinicus%2C%5C+Perrottetia%5C+racemosa%2C%5C+and%5C+Tapiscia%5C+sinensis%2C%5C+was%5C+investigated%5C+in%5C+the%5C+study.%5C+Recent%5C+molecular%5C+research%5C+has%5C+discovered%5C+close%5C+relationships%5C+among%5C+these%5C+three%5C+genera%2C%5C+which%5C+has%5C+led%5C+to%5C+the%5C+establishment%5C+of%5C+the%5C+order%5C+Huerteales%5C+with%5C+Perrottetia%5C+being%5C+placed%5C+in%5C+Dipentodontaceae.%5C+Herein%5C+we%5C+report%5C+the%5C+chromosome%5C+numbers%5C+of%5C+D.%5C+sinicus%5C+and%5C+P.%5C+racemosa%5C+for%5C+the%5C+first%5C+time%2C%5C+and%5C+present%5C+their%5C+karyotype%5C+formulas%5C+as%5C+2n%5C+%3D%5C+34%5C+%3D%5C+22sm%5C+%5C%2B%5C+12st%5C+%5C%28D.%5C+sinicus%5C%29%2C%5C+2n%5C+%3D%5C+20%5C+%3D%5C+11m%5C+%5C%2B%5C+9sm%5C+%5C%28P.%5C+racemosa%5C%29%2C%5C+and%5C+2n%5C+%3D%5C+30%5C+%3D%5C+22m%5C%282SAT%5C%29%5C+%5C%2B%5C+8sm%5C+%5C%28T.%5C+sinensis%5C%29.%5C+Asymmetry%5C+of%5C+their%5C+karyotypes%5C+is%5C+categorized%5C+to%5C+be%5C+Type%5C+3B%5C+in%5C+D.%5C+sinicus%2C%5C+Type%5C+2A%5C+in%5C+P.%5C+racemosa%2C%5C+and%5C+Type%5C+2A%5C+in%5C+T.%5C+sinensis.%5C+Each%5C+of%5C+the%5C+species%5C+shows%5C+special%5C+cytological%5C+features.%5C+Compared%5C+with%5C+Perrottetia%2C%5C+Dipentodon%5C+has%5C+a%5C+different%5C+basic%5C+chromosome%5C+number%2C%5C+a%5C+higher%5C+karyotype%5C+asymmetry%2C%5C+and%5C+different%5C+karyomorphology%5C+of%5C+its%5C+interphase%5C+nuclei%2C%5C+mitotic%5C+prophase%2C%5C+and%5C+metaphase.%5C+Thus%2C%5C+on%5C+the%5C+basis%5C+of%5C+these%5C+results%2C%5C+we%5C+have%5C+reservations%5C+regarding%5C+the%5C+suggestion%5C+of%5C+placing%5C+Dipentodon%5C+and%5C+Perrottetia%5C+together%5C+in%5C+the%5C+family%5C+Dipentodontaceae.4%5C+Genomic%5C+analyses%5C+of%5C+intergeneric%5C+hybrids%5C+between%5C+Michelia%5C+crassipes%5C+and%5C+M.%5C+calcicola%5C+by%5C+GISH%EF%BC%8CGenomic%5C+in%5C+situ%5C+hybridization%5C+%5C%28GISH%5C%29%5C+is%5C+becoming%5C+the%5C+method%5C+of%5C+choice%5C+for%5C+identifying%5C+parental%5C+chromosomes%5C+in%5C+interspecific%5C+hybrids.%5C+Interspecific%5C+F1%5C+hybrid%5C+between%5C+Michelia%5C+crassipes%5C+and%5C+M.%5C+calcicola%2C%5C+tow%5C+highly%5C+ornamental%5C+species%5C+in%5C+Michelia%5C+of%5C+Magnolicaceae%2C%5C+has%5C+been%5C+analized%5C+by%5C+double%5C-colored%5C+GISH%5C+with%5C+its%5C+parents%E2%80%99%5C+genome%5C+as%5C+the%5C+probe.%5C+Research%5C+gave%5C+the%5C+results%5C+that%5C+the%5C+chromosome%5C+number%5C+of%5C+the%5C+F1%5C+hybrid%5C+is%5C+2n%3D38%5C+as%5C+the%5C+same%5C+of%5C+species%5C+in%5C+Michelia%5C+and%5C+other%5C+genera%5C+in%5C+Magnoliaceae%2C%5C+the%5C+basic%5C+chromosome%5C+is%5C+x%3D19%2C%5C+the%5C+karyotype%5C+formula%5C+is%5C+2n%3D38%3D32m%5C%2B6sm%2C%5C+and%5C+the%5C+asymmetry%5C+of%5C+karyotype%5C+is%5C+1B%5C+type.%5C+Based%5C+on%5C+chromosome%5C+data%5C+of%5C+Michelia%5C+in%5C+our%5C+database%2C%5C+the%5C+karyotype%5C+of%5C+this%5C+genus%5C+is%5C+featured%5C+mostly%5C+by%5C+metacentric%5C+chromosomes%5C+and%5C+submetacentric%5C+chromosomes.%5C+In%5C+Mechelia%2C%5C+the%5C+variation%5C+range%5C+of%5C+submetacentric%5C+chromosomes%5C+is%5C+4%5C+to%5C+18%5C+and%5C+of%5C+the%5C+karyotype%5C+asymmetry%5C+is%5C+1A%5C+to%5C+2B%5C+type.%5C+Both%5C+the%5C+karyotype%5C+and%5C+karyotype%5C+asymmetry%5C+type%5C+of%5C+F1%5C+hybrid%5C+is%5C+among%5C+the%5C+variation%5C+range%5C+of%5C+Michelia.%5C+The%5C+figure%5C+of%5C+GISH%5C+showed%5C+that%5C+all%5C+the%5C+38%5C+chromosomes%5C+of%5C+F1%5C+hybrid%5C+have%5C+crossing%5C+parental%5C+signals%2C%5C+and%5C+signal%5C+on%5C+the%5C+no.1%5C+and%5C+no.7%5C+chromosome%5C+showed%5C+differences%2C%5C+which%5C+proved%5C+that%5C+both%5C+the%5C+parental%5C+genome%5C+have%5C+been%5C+transmitted%5C+to%5C+and%5C+recombinated%5C+in%5C+F1%5C+hybrid."},{"jsname":"During a field trip at a brule in Shangri-La, a mixed population of Ligularia Cass. was found, which including L. subspicata (Bur. et Franch.) Hand.-Mazz., L. nelumbifolia (Bur. et Franch.) Hand.-Mazz., L. tongolensis (Franch.) Hand.-Mazz., L. cymbulifera (W.W.Smith) Hand.-Mazz., L. lingiana S.W.Liu, and also some individuals morphologically intermediate between L. subspicata and L. nelumbifolia. Hence, these intermediate individuals were preliminarily assumed as natural hybrids of the two Ligularia. According to their morphology, they’re assumed to form hybrids A and B. Through careful comparison of specimens in herbarium and those we collected, the inflorescence of putative hybrid A is close to L. nelumbifolia, but the shape of laminae are intergradation of L. subspicata and L. nelumbifolia; overall morphology of putative hybrids B is similar to L. nelumbifolia, but inflorescence color is as same as L. subspicata. Compared to L. nelumbifolia (39%) and L. subspicata (36.8%), the germination rate of putative hybrid B (45.7%) slightly higher than the two; but that of hybrid A is extraordinarily low (0.3%). One possible interpretation of the low rate is hybridization. 60 individuals were collected, including putative parents, other 4 species of Ligularia nearby, putative hybrid A and B. They were all direct sequenced of four cpDNA fragments, and direct sequenced or cloning sequenced of nrDNA ITS4-5. The results support that L. nelumbifolia and L. subspicata are parents of putative hybrid A, and the majority female parent is L. subspicata, L. vellerea may also be involved in the hybridization in some degree; the nuclear sequences of putative hybrid B have no superposition, and its chloroplast DNA sequences are identical with L. nelumbifolia, so putative hybrid B could not be hybrid; and there are backcross individuals exist among the putative parent L. subspicata. NewHybrids analysis of ISSR markers indicated that, the individuals of putative hybrid A are almost L. nelumbifolia and L. subspicata F1 hybrid generation (10/11), only 1/11 possibly backcross or other forms; all individuals of hybrid B are L. nelumbifolia; except one individual of L. subspicata as backcrossed, the other parent individuals are 100% reliable. This study focused on molecular evidence, complemented by ecological, reproductive and other characteristics, we demonstrated that the morphologically intermediate individuals’ origin, and the probability of belonging to each parental or hybrid class. And concluded that L. nelumbifolia and L. subspicata are the parents of putative hybrid A, L. vellerea may also be involved in the hybridization in some degree, hybrids mainly are the first generation, a few individuals may be involved in backcross, and most probably backcross with L. subspicata according to the anthesis, while the assumption of hybrid B is not supported.","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Basal%2BAngiosperms&order=desc&&fq=dc.project.title_filter%3ADuring%5C+a%5C+field%5C+trip%5C+at%5C+a%5C+brule%5C+in%5C+Shangri%5C-La%2C%5C+a%5C+mixed%5C+population%5C+of%5C+Ligularia%5C+Cass.%5C+was%5C+found%2C%5C+which%5C+including%5C+L.%5C+subspicata%5C+%5C%28Bur.%5C+et%5C+Franch.%5C%29%5C+Hand.%5C-Mazz.%2C%5C+L.%5C+nelumbifolia%5C+%5C%28Bur.%5C+et%5C+Franch.%5C%29%5C+Hand.%5C-Mazz.%2C%5C+L.%5C+tongolensis%5C+%5C%28Franch.%5C%29%5C+Hand.%5C-Mazz.%2C%5C+L.%5C+cymbulifera%5C+%5C%28W.W.Smith%5C%29%5C+Hand.%5C-Mazz.%2C%5C+L.%5C+lingiana%5C+S.W.Liu%2C%5C+and%5C+also%5C+some%5C+individuals%5C+morphologically%5C+intermediate%5C+between%5C+L.%5C+subspicata%5C+and%5C+L.%5C+nelumbifolia.%5C+Hence%2C%5C+these%5C+intermediate%5C+individuals%5C+were%5C+preliminarily%5C+assumed%5C+as%5C+natural%5C+hybrids%5C+of%5C+the%5C+two%5C+Ligularia.%5C+According%5C+to%5C+their%5C+morphology%2C%5C+they%E2%80%99re%5C+assumed%5C+to%5C+form%5C+hybrids%5C+A%5C+and%5C+B.%5C+Through%5C+careful%5C+comparison%5C+of%5C+specimens%5C+in%5C+herbarium%5C+and%5C+those%5C+we%5C+collected%2C%5C+the%5C+inflorescence%5C+of%5C+putative%5C+hybrid%5C+A%5C+is%5C+close%5C+to%5C+L.%5C+nelumbifolia%2C%5C+but%5C+the%5C+shape%5C+of%5C+laminae%5C+are%5C+intergradation%C2%A0of%5C+L.%5C+subspicata%5C+and%5C+L.%5C+nelumbifolia%5C%3B%5C+overall%5C+morphology%5C+of%5C+putative%5C+hybrids%5C+B%5C+is%5C+similar%5C+to%5C+L.%5C+nelumbifolia%2C%5C+but%5C+inflorescence%5C+color%5C+is%5C+as%5C+same%5C+as%5C+L.%5C+subspicata.%5C+Compared%5C+to%5C+L.%5C+nelumbifolia%5C+%5C%2839%25%5C%29%5C+and%5C+L.%5C+subspicata%5C+%5C%2836.8%25%5C%29%2C%5C+the%5C+germination%5C+rate%5C+of%5C+putative%5C+hybrid%5C+B%5C+%5C%2845.7%25%5C%29%5C+slightly%5C+higher%5C+than%5C+the%5C+two%5C%3B%5C+but%5C+that%5C+of%5C+hybrid%5C+A%5C+is%5C+extraordinarily%5C+low%5C+%5C%280.3%25%5C%29.%5C+One%5C+possible%5C+interpretation%5C+of%5C+the%5C+low%5C+rate%5C+is%5C+hybridization.%5C+60%5C+individuals%5C+were%5C+collected%2C%5C+including%5C+putative%5C+parents%2C%5C+other%5C+4%5C+species%5C+of%5C+Ligularia%5C+nearby%2C%5C+putative%5C+hybrid%5C+A%5C+and%5C+B.%5C+They%5C+were%5C+all%5C+direct%5C+sequenced%5C+of%5C+four%5C+cpDNA%5C+fragments%2C%5C+and%5C+direct%5C+sequenced%5C+or%5C+cloning%5C+sequenced%5C+of%5C+nrDNA%5C+ITS4%5C-5.%5C+The%5C+results%5C+support%5C+that%5C+L.%5C+nelumbifolia%5C+and%5C+L.%5C+subspicata%5C+are%5C+parents%5C+of%5C+putative%5C+hybrid%5C+A%2C%5C+and%5C+the%5C+majority%5C+female%5C+parent%5C+is%5C+L.%5C+subspicata%2C%5C+L.%5C+vellerea%5C+may%5C+also%5C+be%5C+involved%5C+in%5C+the%5C+hybridization%5C+in%5C+some%5C+degree%5C%3B%5C+the%5C+nuclear%5C+sequences%5C+of%5C+putative%5C+hybrid%5C+B%5C+have%5C+no%5C+superposition%2C%5C+and%5C+its%5C+chloroplast%5C+DNA%5C+sequences%5C+are%5C+identical%5C+with%5C+L.%5C+nelumbifolia%2C%5C+so%5C+putative%5C+hybrid%5C+B%5C+could%5C+not%5C+be%5C+hybrid%5C%3B%5C+and%5C+there%5C+are%5C+backcross%5C+individuals%5C+exist%5C+among%5C+the%5C+putative%5C+parent%5C+L.%5C+subspicata.%5C+NewHybrids%5C+analysis%5C+of%5C+ISSR%5C+markers%5C+indicated%5C+that%2C%5C+the%5C+individuals%5C+of%5C+putative%5C+hybrid%5C+A%5C+are%5C+almost%5C+L.%5C+nelumbifolia%5C+and%5C+L.%5C+subspicata%5C+F1%5C+hybrid%5C+generation%5C+%5C%2810%5C%2F11%5C%29%2C%5C+only%5C+1%5C%2F11%5C+possibly%5C+backcross%5C+or%5C+other%5C+forms%5C%3B%5C+all%5C+individuals%5C+of%5C+hybrid%5C+B%5C+are%5C+L.%5C+nelumbifolia%5C%3B%5C+except%5C+one%5C+individual%5C+of%5C+L.%5C+subspicata%5C+as%5C+backcrossed%2C%5C+the%5C+other%5C+parent%5C+individuals%5C+are%5C+100%25%5C+reliable.%5C+This%5C+study%5C+focused%5C+on%5C+molecular%5C+evidence%2C%5C+complemented%5C+by%5C+ecological%2C%5C+reproductive%5C+and%5C+other%5C+characteristics%2C%5C+we%5C+demonstrated%5C+that%5C+the%5C+morphologically%5C+intermediate%5C+individuals%E2%80%99%5C+origin%2C%5C+and%5C+the%5C+probability%5C+of%5C+belonging%5C+to%5C+each%5C+parental%5C+or%5C+hybrid%5C+class.%5C+And%5C+concluded%5C+that%5C+L.%5C+nelumbifolia%5C+and%5C+L.%5C+subspicata%5C+are%5C+the%5C+parents%5C+of%5C+putative%5C+hybrid%5C+A%2C%5C+L.%5C+vellerea%5C+may%5C+also%5C+be%5C+involved%5C+in%5C+the%5C+hybridization%5C+in%5C+some%5C+degree%2C%5C+hybrids%5C+mainly%5C+are%5C+the%5C+first%5C+generation%2C%5C+a%5C+few%5C+individuals%5C+may%5C+be%5C+involved%5C+in%5C+backcross%2C%5C+and%5C+most%5C+probably%5C+backcross%5C+with%5C+L.%5C+subspicata%5C+according%5C+to%5C+the%5C+anthesis%2C%5C+while%5C+the%5C+assumption%5C+of%5C+hybrid%5C+B%5C+is%5C+not%5C+supported."},{"jsname":"European Union (EC 7th Framework Program)[608422]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Basal%2BAngiosperms&order=desc&&fq=dc.project.title_filter%3AEuropean%5C+Union%5C+%5C%28EC%5C+7th%5C+Framework%5C+Program%5C%29%5C%5B608422%5C%5D"},{"jsname":"Foundation of the State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences (CAS)[143107]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Basal%2BAngiosperms&order=desc&&fq=dc.project.title_filter%3AFoundation%5C+of%5C+the%5C+State%5C+Key%5C+Laboratory%5C+of%5C+Paleobiology%5C+and%5C+Stratigraphy%2C%5C+Nanjing%5C+Institute%5C+of%5C+Geology%5C+and%5C+Paleontology%2C%5C+Chinese%5C+Academy%5C+of%5C+Sciences%5C+%5C%28CAS%5C%29%5C%5B143107%5C%5D"},{"jsname":"Foundation of the State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences (CAS)[153107]","jscount":"1","jsurl":"/simple-search?field1=all&rpp=10&accurate=false&advanced=false&sort_by=2&isNonaffiliated=false&search_type=-1&query1=Basal%2BAngiosperms&order=desc&&fq=dc.project.title_filter%3AFoundation%5C+of%5C+the%5C+State%5C+Key%5C+Laboratory%5C+of%5C+Paleobiology%5C+and%5C+Stratigraphy%2C%5C+Nanjing%5C+Institute%5C+of%5C+Geology%5C+and%5C+Paleontology%2C%5C+Chinese%5C+Academy%5C+of%5C+Sciences%5C+%5C%28CAS%5C%29%5C%5B153107%5C%5D"},{"jsname":"lastIndexed","jscount":"2023-09-27"}],"Funding Project","dc.project.title_filter")'>
National N... [2]
National N... [2]
Bambusoide... [1]
Begonia se... [1]
Biosystems... [1]
C. sinensi... [1]
More...
Indexed By
SCI [287]
CSCD [13]
Funding Organization
National K... [6]
Chinese Ac... [5]
John D. an... [4]
National N... [4]
CAS/SAFEA ... [3]
Smithsonia... [3]
More...
×
Knowledge Map
KIB OpenIR
Start a Submission
Submissions
Unclaimed
Claimed
Attach Fulltext
Bookmarks
QQ
Weibo
Feedback
Browse/Search Results:
1-10 of 634
Help
Selected(
0
)
Clear
Items/Page:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Sort:
Select
WOS Cited Times Ascending
WOS Cited Times Descending
Title Ascending
Title Descending
Submit date Ascending
Submit date Descending
Issue Date Ascending
Issue Date Descending
Author Ascending
Author Descending
Journal Impact Factor Ascending
Journal Impact Factor Descending
Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms
期刊论文
nature plants, 2021
Authors:
Gregory W. Stull
Adobe PDF(3425Kb)
|
Favorite
|
View/Download：144/32
|
Submit date：2021/08/23
Plastome phylogenomics of the East Asian endemic genus Dobinea
期刊论文
PLANT DIVERSITY, 2021, 卷号: 43, 期号: 1, 页码: 35-42
Authors:
Liu,Changkun
;
Yang,Jin
;
Jin,Lei
;
Wang,Shuying
;
Yang,Zhenyan
;
Ji,Yunheng
Adobe PDF(3229Kb)
|
Favorite
|
View/Download：26/1
|
Submit date：2022/04/02
Neo-endemism
Divergence
Dobinea delavayi
Dobinea vulgaris
Dobineeae
Anacardiaceae
QUANTITATIVE RECONSTRUCTION
MOLECULAR PHYLOGENETICS
EVOLUTIONARY HISTORY
CHLOROPLAST GENOME
SAPINDALES
MONSOON
NUCLEAR
CHINA
DIVERSIFICATION
ANACARDIACEAE
An updated tribal classification of Lamiaceae based on plastome phylogenomics
期刊论文
BMC BIOLOGY, 2021, 卷号: 19, 期号: 1, 页码: 2
Authors:
Zhao,Fei
;
Chen,Ya-Ping
;
Salmaki,Yasaman
;
Drew,Bryan T.
;
Wilson,Trevor C.
;
Scheen,Anne-Cathrine
;
Celep,Ferhat
;
Braeuchler,Christian
;
Bendiksby,Mika
;
Wang,Qiang
;
Min,Dao-Zhang
;
Peng,Hua
;
Olmstead,Richard G.
;
Li,Bo
;
Xiang,Chun-Lei
Adobe PDF(2557Kb)
|
Favorite
|
View/Download：34/1
|
Submit date：2022/04/02
Lamiaceae
Lamioideae
Mints
Phylogenomics
Tribal relationships
COMPLETE CHLOROPLAST GENOME
HAWAIIAN ENDEMIC MINTS
MOLECULAR PHYLOGENY
POLLEN MORPHOLOGY
CLERODENDRUM LAMIACEAE
LAMIOIDEAE LAMIACEAE
STACHYDEAE LAMIACEAE
CHARACTER EVOLUTION
STAMINAL EVOLUTION
PERICARP STRUCTURE
Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms
期刊论文
NATURE PLANTS, 2021, 卷号: 7, 期号: 8, 页码: 1015+
Authors:
Stull,Gregory W.
;
Qu,Xiao-Jian
;
Parins-Fukuchi,Caroline
;
Yang,Ying-Ying
;
Yang,Jun-Bo
;
Yang,Zhi-Yun
;
Hu,Yi
;
Ma,Hong
;
Soltis,Pamela S.
;
Soltis,Douglas E.
;
Li,De-Zhu
;
Smith,Stephen A.
;
Yi,Ting-Shuang
Adobe PDF(3414Kb)
|
Favorite
|
View/Download：26/0
|
Submit date：2022/04/02
SEED PLANTS
R PACKAGE
POLYPLOIDY
CONIFERS
TREE
GENERATION
INFERENCE
ANCIENT
DISCORDANCE
ANGIOSPERMS
Rediscovery of Mazus lanceifolius reveals a new genus and a new species in Mazaceae
期刊论文
PHYTOKEYS, 2021, 期号: 171, 页码: 1-24
Authors:
Xiang,Chun-Lei
;
Pan,Hong-Li
;
Min,Dao-Zhang
;
Zhang,Dai-Gui
;
Zhao,Fei
;
Liu,Bing
;
Li,Bo
Adobe PDF(6504Kb)
|
Favorite
|
View/Download：34/0
|
Submit date：2022/04/02
Dodartia
Lamiales
Lancea
new genus
Puchiumazus
BAYESIAN PHYLOGENETIC INFERENCE
SCROPHULARIACEAE
PLACEMENT
RBCL
SYSTEMATICS
SEQUENCES
MODEL
DNA
DISINTEGRATION
HYBRIDIZATION
The untapped potential of plant sesterterpenoids: chemistry, biological activities and biosynthesis
期刊论文
NATURAL PRODUCT REPORTS, 2021, 卷号: 38, 期号: 12, 页码: 2293-2314
Authors:
Guo,Kai
;
Liu,Yan
;
Li,Sheng-Hong
Adobe PDF(3431Kb)
|
Favorite
|
View/Download：15/2
|
Submit date：2022/04/02
LEUCOSCEPTRUM-CANUM
GLANDULAR TRICHOMES
FERN CONSTITUENTS
AERIAL PARTS
ABSOLUTE STEREOCHEMISTRY
SALVIA
CYCLIZATION
SYNTHASES
NORSESTERTERPENES
CONFIGURATION
Diversity of Flower Visiting Beetles at Higher Elevations on the Yulong Snow Mountain (Yunnan, China)
期刊论文
DIVERSITY-BASEL, 2021, 卷号: 13, 期号: 11, 页码: 604
Authors:
Li,Kai-Qin
;
Ren,Zong-Xin
;
Li,Qiang
Adobe PDF(2409Kb)
|
Favorite
|
View/Download：17/1
|
Submit date：2022/04/02
alpine
diversity
Hengduan Mountain
modularity
plant-insect interaction
FLORAL BIOLOGY
RAIN-FOREST
POLLINATION
COLEOPTERA
COMMUNITY
SPECIALIZATION
NETWORKS
SARAWAK
ANDES
Phylogenetic relatedness of woody angiosperm assemblages and its environmental determinants along a subtropical elevational gradient in China
期刊论文
PLANT DIVERSITY, 2021, 卷号: 43, 期号: 2, 页码: 111-116
Authors:
Yue,Juan
;
Li,Rong
Adobe PDF(1162Kb)
|
Favorite
|
View/Download：10/1
|
Submit date：2022/04/02
Dulong Valley
Ecological tolerance
Habitat filtering
Niche conservatism
Woody plants
NORTHERN GAOLIGONG MOUNTAINS
SPECIES RICHNESS
NICHE CONSERVATISM
LATITUDINAL GRADIENTS
COMMUNITY STRUCTURE
WESTERN YUNNAN
SEED PLANTS
DIVERSITY
EVOLUTIONARY
PATTERNS
Phylogeny and evolution of chloroplast tRNAs in Adoxaceae
期刊论文
ECOLOGY AND EVOLUTION, 2021, 卷号: 11, 期号: 3, 页码: 1294-1309
Authors:
Zhong,Qiu-Yi
;
Fu,Xiao-Gang
;
Zhang,Ting-Ting
;
Zhou,Tong
;
Yue,Ming
;
Liu,Jian-Ni
;
Li,Zhong-Hu
Adobe PDF(2392Kb)
|
Favorite
|
View/Download：14/0
|
Submit date：2022/04/02
anticodon
chloroplast tRNA
intron
phylogeny
transition
transversion
NONOPTIMAL CODON USAGE
HORIZONTAL TRANSFER
GENE DUPLICATION
GENOME
MITOCHONDRIAL
ORIGIN
TRANSLATION
SEQUENCES
ACID
DNA
Patterns of phylogenetic beta diversity measured at deep evolutionary histories across geographical and ecological spaces for angiosperms in China
期刊论文
JOURNAL OF BIOGEOGRAPHY, 2021, 卷号: 48, 期号: 4, 页码: 773-784
Authors:
Qian,Hong
;
Jin,Yi
;
Leprieur,Fabien
;
Wang,Xianli
;
Deng,Tao
View
|
Adobe PDF(1074Kb)
|
Favorite
|
View/Download：13/1
|
Submit date：2022/04/02
Chinese flora
environmental gradient
flowering plants
latitudinal gradient
phylogenetic beta diversity
1ST FOSSIL RECORD
VASCULAR PLANTS
SPECIES RICHNESS
ASIAN MONSOON
COMMUNITY STRUCTURE
NICHE CONSERVATISM
EASTERN ASIA
SCALE
TERRESTRIAL
ENVIRONMENT
