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Genetic Diversity and Differentiation of Aquilaria sinensis (Lour.) Gilg Revealed by ISSR and SRAP Markers
Author(s) -
Zou Meiling,
Xia Zhiqiang,
Lu Cheng,
Wang Haiyan,
Ji Jiamin,
Wang Wenquan
Publication year - 2012
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2011.10.0576
Subject(s) - biology , genetic diversity , endangered species , seed dispersal , gene flow , botany , biological dispersal , analysis of molecular variance , population , microsatellite , genetic variation , ecology , genetics , allele , gene , demography , sociology , habitat
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.