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杂交育种成败的关键因素之一是亲本品种的选择。正确地选配亲本并尽早地辨别组合的优劣,对提高杂交育种的效果具有重要的意义。这就涉及亲本的配合力问题,配合力是杂交组合中亲本各性状配合能力的一个指标,在育种工作中它可作为选配亲本的依据。 双列杂交法正是用以研究杂交亲本的配合力进而选择亲本和早期世代鉴定杂交组合的一种有效技术。所谓双列杂交法,即为一种杂交设计方案,它是以一组P个亲本品种进行所有可能的杂交,因而提供了最多为P~2个组合材料,用来研究数量性状的遗传和育种问题。
One of the key factors in the success of hybrid breeding is the choice of parental variety. Correctly matching parents and early identification of the merits of combinations, to improve the effect of cross breeding is of great significance. This involves the problem of combining ability of parents, and combining ability is an index of the ability of parents to cooperate with each other in the cross combination. It can be used as the basis of matching parents in breeding work. The double-line hybridization method is an effective technique to study the combining ability of hybrid parents and select the parents and early generations to identify the crosses. The so-called double-line hybridization is a hybrid design that performs all possible crosses with a set of P parental varieties and thus provides up to P ~ 2 combinations of materials for studying the inheritance and breeding of quantitative traits problem.