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Fine scale genetic structure in a wild soybean ( Glycine soja ) population and the implications for conservation
Author(s) -
Jin Yan,
He Tianhua,
Lu BaoRong
Publication year - 2003
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.1469-8137.2003.00824.x
Subject(s) - glycine soja , biology , population , genetic diversity , genetic structure , evolutionary biology , population genetics , genetics , genetic variation , glycine , gene , demography , amino acid , sociology
Summary• The fine‐scale spatial distribution of a wild soybean ( Glycine soja Sieb. et Zucc) population was measured using kinship coefficients and spatial autocorrelation coefficients to reveal fine‐scale spatial patterns of genetic structure for guiding collection in ex situ conservation. • Individual families (100) of a single population were sampled in Jiangwan (Shanghai, China) and their specific locations mapped. Individual plants were genotyped for 331 ISSR loci from 15 selective ISSR primers; 45% were demonstrated to be polymorphic. • Pairwise kinship coefficients between individuals were calculated, and then regressed based on the spatial distance between individuals. The results indicated a close genetic relationship among individual families in the patch with a diameter of c. 30 m. Spatial autocorrelation analysis suggested that there were significant clusters of genes within the population; c. 81.4% of the loci were found to be positively correlated in the first two distance classes (0–10 m). • The results suggest, for conservation genetics, sampling within a wild soybean population should be conducted at 10 m intervals across the entire population to optimize the genetic diversity in collections taken from that population.