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。 In order to reveal the genetic relationship of rapeseed test materials, the genetic diversity of 25 tested rapeseed cultivars participating in 2007-2008 in Guizhou Province was analyzed using SSR molecular markers. The results showed that 45 of the 115 bands amplified showed polymorphism with a polymorphism rate of 39%. The genetic similarity coefficients of 25 materials ranged from 0.43 to 0.95 with an average of 0.69. The genetic similarity coefficient of 0.63 is divided into three groups, the same unit of breeding materials tend to be grouped together with a similar genetic background.