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首页> 外文期刊>Breeding science >Genetic diversity of the black gram [Vigna mungo (L.) Hepper] gene pool as revealed by SSR markers
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Genetic diversity of the black gram [Vigna mungo (L.) Hepper] gene pool as revealed by SSR markers

机译：SSR标记揭示的黑克[Vigna mungo（L.）Hepper]基因库的遗传多样性

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摘要

In this study, 520 cultivated and 14 wild accessions of black gram (Vigna mungo (L.) Hepper) were assessed for diversity using 22 SSR markers. Totally, 199 alleles were detected with a mean of 9.05 alleles per locus. Wild black gram showed higher gene diversity than cultivated black gram. Gene diversity of cultivated accessions among regions was comparable, while allelic richness of South Asia was higher than that of other regions. 78.67% of the wild gene diversity presented in cultivated accessions, indicating that the domestication bottleneck effect in black gram is relatively low. Genetic distance analysis revealed that cultivated black gram was more closely related to wild black gram from South Asia than that from Southeast Asia. STRUCTURE, principal coordinate and neighbor-joining analyses consistently revealed that 534 black gram accessions were grouped into three major subpopulations. The analyses also revealed that cultivated black gram from South Asia was genetically distinct from that from West Asia. Comparison by SSR analysis with other closely related Vigna species, including mungbean, azuki bean, and rice bean, revealed that level of gene diversity of black gram is comparable to that of mungbean and rice bean but lower than that of azuki bean.
机译：在这项研究中，使用22个SSR标记评估了520种栽培种和14种野生种黑克（Vigna mungo（L.）Hepper）的多样性。总共检测到199个等位基因，每个基因座平均为9.0​​5个等位基因。野生黑豆显示出比栽培黑豆更高的基因多样性。各地区栽培种的基因多样性相当，而南亚的等位基因丰富度高于其他地区。栽培种中有78.67％的野生基因多样性，表明黑克的驯化瓶颈效应相对较低。遗传距离分析表明，栽培黑豆与来自南亚的野生黑豆比来自东南亚的黑豆更紧密相关。结构，主坐标和邻居加入分析一致显示，将534个黑克种分为三个主要亚群。分析还显示，南亚栽培的黑克在遗传上与西亚不同。通过SSR分析与其他密切相关的Vigna物种（包括绿豆，小豆和稻豆）进行比较，发现黑克的基因多样性水平可与绿豆和稻豆相媲美，但低于小豆。

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