白菜型油菜自交亲和性变异分析

Variation of Brassica rapa Self-compatibility

对不同来源的85份白菜型油菜品种的自交亲和指数研究表明,白菜型油菜的自交亲和性存在较大幅度的变异,自交亲和指数在0．00～9．28之间,这种变异不仅存在于品种间,而且存在于品种内不同个体间。85份参试材料中,自交亲和指数小于1的有50个品种;35个品种自交亲和指数大于1,自交亲和指数在1．00～9．28之间,其中亲和指数大于4的材料有28、44、45、55x、75、119、123、139号品种等。依据自交亲和指数,可将参试材料分为4种类型:高自交亲和类型(自交亲和指数>4．00);自交亲和类型(自交亲和指数1．00～3．99);自交不亲和类型(0．00< 自交亲和指数<1．00);高自交不亲和类型(自交亲和指数=0．00)。自交亲和性因地区而异,一般西部地区的品种自交亲和性高于其它地区的品种。

The self-compatible indexes of 85 varieties from different sources were studied,which indicated that Brassica rapa self-compatibility varied within a relative great range,the self-compatible indexes ranged within 0.00-9.28 and this variation existed not only among the species but among different plants of the same species. If the 85 materials under study,50 varieties had a self-compatible index less than 1 and 35 varieties had a self-compatible index of more than 1 ,which ranged within 1.00-9.28,and the varieties with a self-compatible index of more than 4 were 28,44,45,55x, 75,119,123 and 139. According to their selfcompatible indexes ,the varieties under study could be divided into four types ：type of high self-compatibili- ty （self-compatible index〉4.00）,type of self-compatibility self-compatible index ranging within 1.00-3. 99）,type of self-incompatibility （0. 00〈self-compatible index〈1. 00）,type of high self-incompatibility （self-compatible index=0.00）. The self-compatibility varied with regions and the self-compatibility in the varieties from west China was higher than those from other regions.