在玉米育种工作中,对选育的自交系,除应具有优良性状外,还必须考虑到配合力的高低。一般形态和经济性状的好坏,可以根据直接鉴定加以取舍;而配合力的高低,只有通过杂交测定才能明确。通常进行测定时,除应考虑自交的代数外,还要注意选用适当的测验种种类。 考虑到在我国目前还很注意选用硬粒型自交系的情况下,对于不同类型自交系的配合力,选用什么测验种来进行测定,才能得 In maize breeding work, breeding inbred lines, in addition to having good traits, but also must take into account the level of co-operation. General morphology and economic traits are good or bad, can be based on direct identification to be selected; and the level of combining ability, only through the hybridization assay can be clear. In general, in addition to selfing the algebra should be considered, but also pay attention to select the appropriate test species. Taking into account that in our country is still very careful selection of the case of hard-grain inbred lines, for different types of inbreds with the ability to choose what test species to be measured in order to get