水稻三系不育系香209A的配合力分析

摘要

The combining ability of F1 yield and yield component between Xiang 209A and four sterile lines,and Xiang 209A and five restorer lines according to incomplete diallel cross design were analyzed to speed up application of Xiang 209A in hybrid rice. The results showed that the general combining ability of effective spikes per plant, grains per spike, filled grains per spike, 1000-grain weight, setting percentage and yield character of Xiang 209A was high, and there was obvious difference and no obvious regularity in the special combining ability of the same character among different combinations and in the special combining ability of different characters in the same combination.%为加快香209A在杂交水稻育种的应用,利用其配组出强优势组合应用生产,用香209A及其他4个三系不育系与5个恢复系按不完全双列杂交方式配组F1,对F1的产量及产量构成因素进行配合力分析.结果表明,香209A在单株有效穗、穗粒数、穗实粒数、千粒重和结实率及产量性状上表现出较高的一般配合力,同一性状在不同组合间以及同一组合的不同性状间的特殊配合力差异较大,无明显规律性.