水稻籼粳型品系亲籼性的分析

Analysis on the Indica-Compatibility of Indica-Japonica Lines in Rice (Oryza sativa L.)

对4个不同类型的籼粳型品系与籼型常规水稻、籼型光温敏不育系杂交F1的育性进行了分析,结果表明4个籼粳型品系的亲籼性均比对照02428的高,与籼型测验种杂交产生的F1杂种表现出正常或接近正常的花粉育性和小穗育性;4个籼粳型品系与光温敏不育系杂交,F1杂种也表现出正常或接近正常的育性,表明这些籼粳型品系对光温敏不育性具有恢复能力,可以用于两系杂交水稻的育种中.

The F1 fertility of four different type's indicajaponica lines (IJLs) was analysed using indica varieties and indica photothermosensitive genetic male sterile (PTGMS) lines as testers. The results showed that the indica-compatibility of four IJLs was higher than check 02428, and the F1 pollen and spikelet fertility of four IJLs was normal or nearly normal. When crossed with PTGMS alone, the four IJLs also showed normal or nearly normal pollen and spikelet fertility, The results indicated that these IJLs had the ability to restore fertility to PTGMS, so they could be used in twoline hybrid's breeding of rice.