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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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Speciation and conservation genetic assessment of two endangered cycad species
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conservation
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genetic differentiation
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Ceratostigma
Plastid genome
Comparative analysis
Interspecific relationship
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COMPLETE CHLOROPLAST GENOME
MEKONG-SALWEEN DIVIDE
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Comparative phylogeography
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Megacodon
Sino-Himalayan
Ecological divergence
Habitat fragmentation
EVOLUTIONARY HISTORY
HENGDUAN MOUNTAINS
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MOLECULAR PHYLOGENY
TIBETAN PLATEAU
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Asian monsoon
Endemism
Evolutionary history
Floristic elements
Assembly process
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Mountain biodiversity
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EOCENE PALYNOLOGICAL RECORD
TIBETAN PLATEAU
EVOLUTIONARY HISTORY
HENGDUAN MOUNTAINS
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物种多样性，系统发育多样性，系统发育结构，进化历史，蔷薇分支
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Rothfels,Carl J.
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Shepherd,Lara D.
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Huperzia
Lycophyte Phylogeny
Lycopodiella Serpentina
Phlegmariurus
Phylloglossum
Vascular Plant Evolution
Complete Chloroplast Genome
Lycopodiopsida Lycopodiaceae
Generic Classification
Spore Morphology
Early Evolution
Land Plants
Rbcl Gene
Huperzia
Sequence
Likelihood
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学位论文
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提交时间：2023/11/02
