作物学报 ›› 2009, Vol. 35 ›› Issue (4): 679-684.doi: 10.3724/SP.J.1006.2009.00679
孙希平12,杨庆文2*
SUN Xi-Ping12,YANG Qing-Wen2*
摘要:
利用24对SSR引物,对来自中国10个代表性居群和越南、老挝、柬埔寨的5个居群共计282份普通野生稻材料进行遗传多样性比较研究。结果表明,(1)24个微卫星位点共检测到等位基因289个,平均等位基因数(A)为12,有效等位基因数(Ae)为7;期望杂合度(He)平均为0.812,观察杂合度(Ho)平均为0.543,香农指数(I)平均为1.99;(2)4个国家中,中国普通野生稻的遗传多样性最丰富,老挝次之,越南和柬埔寨最低,香农指数(I)分别为1.92、1.69、1.47和1.45;(3)采用UPGMA方法对供试15个居群进行聚类分析。老挝和柬埔寨2个居群的亲缘关系最近,二者与越南居群有着较近的亲缘关系;(4)在中国所有参试居群中,广西武宣和贺州居群与东南亚3国亲缘关系最近。
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