Abstract
The genetic diversity of 1075 genotypes from a primary geographic core collection of faba bean(Vicia faba L.) was analyzed by using SSR markers. The number of observed and effective alleles of 8.54 and 2.26, the Shannon's information index of 1.02, were detected. Unconspicuous population structure among the 1075 genotypes indicated an extensive genetic background and nice representativeness. A mini-core collection comprised 129 Chinese and 63 oversea faba bean genotypes was randomly sampled from each cluster of dendrogram including all the 1075 tested genotypes. The observed alleles, effective alleles and Shannon's information index of the mini-core collection covered 87.32%, 101.26%, and 101.82% of the primary geographic core collection respectively. The t-test did not show significant differences in genetic diversity between the primary geographic core collection and the mini-core collection, which validated the representativeness of the mini-core collection in genetic diversity of faba bean. The mini-core collection will play an important role in exploration of new genes within faba bean.
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