Genetic Diversity and Differentiation of Aquilaria sinensis (Lour.) Gilg Revealed by ISSR and SRAP Markers
文献类型： 外文期刊
作者： Zou, Meiling 1 ; Xia, Zhiqiang 1 ; Lu, Cheng 1 ; Wang, Haiyan 1 ; Ji, Jiamin 1 ; Wang, Wenquan 1 ;
作者机构： 1.CATAS, ITBB, Haikou 571101, Peoples R China
期刊名称：CROP SCIENCE （ 影响因子：2.319； 五年影响因子：2.631 ）
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收录情况： SCI
摘要： Aquilaria sinensis (Lour.) Gilg, one of the most valuable medicinal plants endemic to China, has been largely destroyed and is presently listed as an endangered species in the China Plant Red Data Book: Rare and Endangered Plants. The number of individuals and population genetic diversity of this species have rarely been reported. A total of 567 polymorphic bands were found in 112 accessions of A. sinensis using inter-simple sequence repeats and sequence-related amplified polymorphism markers. All accessions from 11 locations were allocated into five geographical natural populations by cluster analysis. The genetic classification of accessions coincided with their geographic distribution, with some overlapping between neighboring regions. Principal coordinate analysis further showed three large-scale geographic genetic zones of A. sinensis. Nei's genetic diversity had low values in the range 0.2014 to 0.1671 at the species level for A. sinensis. There were significant differences (P < 0.001) among (19.64% of the variance) and within populations (80.36% of the variance). Restricted gene flow (Nm = 1.8292) among populations may result from several factors, such as low seed dispersal and isolation of populations.
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