17个骨干玉米自交系主要性状的配合力分析

Analysis of Combining Ability to Primary Charactersof Seventeen Backbone Corn Inbred Lines

研究按不完全双列杂交设计,配成72个玉米单交组合,进行完全随机区组3次重复试验。通过对17个自交系8个主要农艺性状配合力的分析,结果表明除父本组的行粒数配合力方差不显著外其余8个性状的配合力方差均达到极显著水平,其中农艺性状好、配合力较高的是自育系92115、81111、沃47和外引系78599-14、天4、540。

The report is based on a study designed according to the incomplete diallel cross. 72 combinations were single crossed and repeated for three times, being arranged by chance. By analyzing the eight agronomic characters of the 17 backbone corn inbred lines,we have found that the square errors of the 8 primary characters in combining ability are significant difference. But the difference of the square error of the grain number of per row in male parent group isn't obvious. The corn inbred lines 92115?81111 and Wo47 are the best ones bred by ourselves.And those best introduced inbred lines are 78599-14?Tian4 and 540.