杂交早稻主要品质性状的配合力分析

Combining ability analysis of main quality characters in early indica-type hybrid rice:

采用５×７不完全双列杂交对杂交早稻的８个主要品质性状进行配合力分析。根据各亲本的一般配合力效应和特殊配合力方差的大小将亲本分成四类，然后结合各组合的特殊配合力效应和组合平均数，对所有１２个参试亲本进行优劣评价。表明，在杂交早稻优质米育种中，应重视对早红突Ａ、抗红突Ａ２个不育系和杭恢６３８、ＥＴ３０４２、金７０选３个恢复系的利用。

Combining ability analysis of eight main quality characters in early indica-type hybrid rice was conducted with a 5×7 incomplete diallel set of crosses. The parents were divided into four types by the effects of GCA and the variances of SCA, and were appraised according to the effects of SCA and average values of all combinations. The result proved that the utilization of 2 CMS lines of Zaohongtuo A、 Kanghongtuo A and 3 restoring lines of Hanghui 638、 ET3042、 Jin 70 Xuan in the breeding programme of early indica-type hybrid rice of good quality should be emphasized.