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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
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0.05) between wild (AR = 4.651), semi-cultivated (AR = 5.091) and cultivated (AR = 5.132) populations of C. taliensis, which suggested that the genetic background of long-lived woody plant was not easy to be changed, and there were moderate high gene flow between populations. However, there was a significant difference (P < 0.05) between wild (AR = 5.9) and cultivated (AR = 7.1) populations distributed in the same place in Yun county, Yunnan province, which may result from the hybridization and introgression of species in the tea garden and anthropogenic damages to the wild population. The hypothesis of hybrid origin of C. grandibracteata was tested by morphological and microsatellites analyses. Compared with other species, the locules in ovary of C. grandibracteata are variable, which showed a morphological intermediate and mosaic. Except one private allele, Ninety-nine percent alleles of C. grandibracteata were shared with these of C. taliensis and C. sinensis var. assamica. And C. grandibracteata was nested in the cluster of C. taliensis in the UPGMA tree. Conclusively, our results supported the hypothesis of hybrid origin of C. grandibracteata partly. The speciation of C. grandibracteata was derived from hybridization and asymmetrical introgression potentially. It is possible that C. taliensis was one of its parents, but it still needs more evidences to prove that C. sinensis var. assamica was another 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Mai University","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AChiang%5C+Mai%5C+University"},{"jsname":"China postdoc foundation[2017M613021]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AChina%5C+postdoc%5C+foundation%5C%5B2017M613021%5C%5D"},{"jsname":"Chinese Academy of Sciences President International Fellowship Initiative (CAS-PIFI)[2017PC0035]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AChinese%5C+Academy%5C+of%5C+Sciences%5C+President%5C+International%5C+Fellowship%5C+Initiative%5C+%5C%28CAS%5C-PIFI%5C%29%5C%5B2017PC0035%5C%5D"},{"jsname":"Chinese Academy of Sciences[2013T2S0030]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AChinese%5C+Academy%5C+of%5C+Sciences%5C%5B2013T2S0030%5C%5D"},{"jsname":"Chinese Academy of Sciences[2013Y2SB0007]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AChinese%5C+Academy%5C+of%5C+Sciences%5C%5B2013Y2SB0007%5C%5D"},{"jsname":"Federal Ministry for Economic Cooperation and Development, Germany[13.1432.4-001.00]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AFederal%5C+Ministry%5C+for%5C+Economic%5C+Cooperation%5C+and%5C+Development%2C%5C+Germany%5C%5B13.1432.4%5C-001.00%5C%5D"},{"jsname":"Following the rapid uplift of the Himalaya, the reorganization of the major river drainages was primarily caused by river capture events，e.g. those of the Jinshajiang River (comprising the Upper, Middle and Lower Jinshajiang) and its tributaries (Yalongjiang, Daduhe, Jialingjiang), the Nujiang, the Lancangjiang, and the Honghe. We selected Terminalia franchetii var. franchetii and T. franchetii var. intricata in the Sino-Himalayan region to study the relationship with Honghe diversion events. The distribution of this species is predicted to have retained genetic signatures of past hydrological landscape structures. The major result as flowing:1. Chloroplast phylogeography of T. franchetii based on haplotype analysis，Based on a range-wide sampling comprising 28 populations and 258 individuals, and using chloroplast DNA sequences (trnL-trnF, petL-psbE), we detected 12 haplotypes. Terminalia franchetii was found to harbour high haplotype diversity (hT = 0.784) but low average within-population diversity (hS = 0.124). The analysis of genetic structure using SAMOVA showed that the number of population groups equaled five, and all the haplotypes can be divided into five groups. Group B and C identified exhibited a disjunctive distribution of dominant haplotypes between northern and southern valleys, corresponding to the geography of past rather than modern drainage systems.Mismatch distribution (multimodal curve) and neutral tests provided no evidence of recent demographic population growth. We suggest that the modern disjunctive distribution of T. franchetii, and associated patterns of cpDNA haplotype variation, result from vicariance caused by several historical river separation and capture events. By assuming a common mutation rate of the cpDNA-IGS regions, our inferred timings of these events (0.82-4.39 Mya) broadly agrees with both previous geological and molecular estimated time of drainage rearrangements in this region. So we conclude that there were several historical vicariance events play a major role for the distribution of T. franchetii in this region.2. Genetic diversity and structure of T. franchetii var. franchetii based on AFLP analysis，We determined the genotype of 251 individuals of T. franchetii var. franchetii from 21 populations using amplified fragment length polymorphism (AFLP), for our aim is only investigated the relationship between the modern distribution of T. franchetii and geological changes in drainage patterns. The overall estimate of genetic structure (Gst) was 0.249, indicating that clear genetic differentiation existed among the populations. Estimates of gene flow (Nm = 0.754) between populations based on the Gst value revealed that the number of migrants per generation is not frequently.Using Neighbor-Joining tree, Principal Coordinates Analysis, STRUCTURE and network methods, Analyses of AFLP markers identified two main population groups (I and II) and four subgroups (A – D) of T. franchetii. Genetic diversity was lower in Group I than in Group II. The results show that Groups I and II probably once occupied continuous areas respectively along ancient drainage systems and there were several historical separation and capture events that can account for the distribution of T. franchetii in this region. After all，these are good examples of the way in which historical events can change a species’ distribution from continuous to fragmented (Jinshajiang/ Yalongjiang and Honghe), and a disjunct distribution to a continuous one (Upper/Lower Jinshajiang and Yalongjiang). The results provide new insights into the phylogeographic pattern of plants in southwest China.3. Relationships between T. franchetii var. franchetii and T. franchetii var. intricata ，While T. franchetii var. Franchetii and var. intricata slightly differ in overall size and leaf hairiness, these taxa did not exhibit reciprocal monophyly. As results show, the genetic difference between the two varieties is much smaller than that within var. franchetii (Salween population vs. other populationsof this variety). It is also revealed in a phylogenetic analysis of ITS region of Combretoideae. The habitats of var. franchetii and var. intricata have obviously difference. Thus, the differences between the two varieties in overall size and leaf hairiness might reflect different phenotypic responses to environmental changes and the divergent environmental niche spaces they occupy. Based on the reasoning above, we agree with Flora of China that “T. intricata” represents a variety of T. franchetii rather than a separate 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of the Royal Botanic Gardens Victoria","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AFriends%5C+of%5C+the%5C+Royal%5C+Botanic%5C+Gardens%5C+Victoria"},{"jsname":"GIZ/BMZ on behalf of the Government of the Federal Republic of Germany[13.1432.7-001.00]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AGIZ%5C%2FBMZ%5C+on%5C+behalf%5C+of%5C+the%5C+Government%5C+of%5C+the%5C+Federal%5C+Republic%5C+of%5C+Germany%5C%5B13.1432.7%5C-001.00%5C%5D"},{"jsname":"Green Rubber project[CRP FTA]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AGreen%5C+Rubber%5C+project%5C%5BCRP%5C+FTA%5C%5D"},{"jsname":"ITC Research Fund from the 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Sciences[QYZDY-SSW-SMC014]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AKey%5C+Research%5C+Program%5C+of%5C+Frontier%5C+Sciences%5C+of%5C+the%5C+Chinese%5C+Academy%5C+of%5C+Sciences%5C%5BQYZDY%5C-SSW%5C-SMC014%5C%5D"},{"jsname":"Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-SMC014]","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AKey%5C+Research%5C+Program%5C+of%5C+Frontier%5C+Sciences%2C%5C+CAS%5C%5BQYZDY%5C-SSW%5C-SMC014%5C%5D"},{"jsname":"Mae Fah Luang University","jscount":"1","jsurl":"/simple-search?field1=all&field=dc.project.fundingorganization_filter&advanced=false&query1=MAPPING%2BTROPICAL%2BFORESTS&&fq=dc.project.title_filter%3AMae%5C+Fah%5C+Luang%5C+University"},{"jsname":"Mae Fah Luang 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