黑龙江省常用中晚熟玉米自交系的配合力评价

Evaluation on the Combining Ability of Mid-late Inbred Lines in Heilongjiang Province

为了解自交系的配合力及性状遗传方式 ,用 9个中晚熟玉米自交系为材料 ,按Griffing4模式进行双列杂交得到 36个杂交组合。研究结果表明 :自交系L10 5、4F1及 4 4 4的各性状均有较高的一般配合力。同时 ,研究还发现 ,有些自交系的个别性状特殊配合力方差较大 ,应注重后代的选择。

In order to evaluate the combining ability and genetic model of some traits, 9 late inbred lines were crossed in diallel cross style according to Griffing 4 design. The results show that inbred lines L105, 4F 1 and 444 possess higher g.c.a than other lines. At the same time, it was found that some lines have higher s.c.a variance. So more attention should be paid to the next generation selection.