贵州省2008年油菜区试材料的SSR遗传多样性分析

Genetic Diversity Analysis of 25 Rapeseed Varieties from Guizhou Rapeseed Regional Test by SSR Marker

为揭示油菜区试材料的亲缘关系,利用SSR分子标记技术分析了25份参加2007—2008年贵州省油菜区试材料的遗传多样性。结果表明：扩增出的115条带中45条呈现多态,多态性比率为39%。25份材料间的遗传相似系数在0.43-0.95,平均为0.69。在遗传相似系数0.63处分为3个类群,同一单位育出的材料往往优先聚为一类,遗传背景相近。

The genetic diversity of 25 rapeseed varieties from Guizhou rapeseed regional test during 2007-2008 was analyzed by SSR marker to reveal the genetic relationship of 25 rapeseed varieties.The results showed that there were 45 polymorphic bands in 115 amplified bands and the polymorphic rate was 39%.The genetic similarity coefficient and average genetic similar coefficient among 25 rapeseed varieties were 0.43～0.95 and 0.69 respectively.25 rapeseed varieties can be divided into three groups according to genetic similarity coefficient of 0.63 and the genetic background of rapeseed varieties bred from the same breeding unit is closer.