Genetic Diversity in Loquat Germplasm Using SRAP and SSR Markers
文献类型: 外文期刊
第一作者: Qiao, Yanchun
作者: Qiao, Yanchun;Zhang, Zhike;Gao, Yongshun;Liu, Chengming;Lin, Shunquan;Hong, Yanping;Guo, Dongliang
作者机构:
关键词: Eriobotrya japonica;gene flow;molecular marker
期刊名称:IV INTERNATIONAL SYMPOSIUM ON LOQUAT
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年卷期:
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收录情况: SCI
摘要: Forty-six accessions of loquat (Eriobotrya japonica Lindl.) from six countries were analyzed with SRAP and SSR markers to investigate the genetic diversity of cultivated loquat germplasm. A total of 13,435 SRAP bands and 685 SSR bands were obtained with 50 informative primer combinations. A total of 236 bands among 434 SRAP bands (54.37%) were polymorphic as well as eight of ten SSR primer combinations. The average value of observed number of alleles (Na), effective number of alleles (Ne), Nei's genediversity (H) and Shannon information index (I) were 1.592, 1.290, 0.174, and 0.183, respectively. The mean coefficient of gene differentiation (Gst) among populations was 0.691, suggesting that 69.1% of the Gst was among populations and 30.9% was within populations. There was a weak gene flow among populations; the mean estimate of gene flow was 0.224. The 46 accessions were clustered into four groups. The genetic relationships of 46 loquat cultivars were analyzed by the similarity coefficient (GS).
分类号: S6
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