关键词: 玉米, 诱变系, 航天飞行, 配合力

Abstract:

Compared with CK, the combining ability analysis of the seven mutations of K305 and eight mutations of 698-3 indicated that the GCA effects of most characters had significant difference. In addition, the SCA effects of different characters in different mutation of hybrid combinations were quite different with their CK, and some combinations of mutants were better than the original combinations, which manifested mutants might group a more excellent combination. The results also showed with their CK, the mutations have different characteristics, especially for the short plant height line 1227 with a potential high yield. So the application should based on the different breeding objective.

Key words: Maize, mutant, Spaceflight, Combiningability