摘要
以 4个自选系和 3个常用自交系为母本 ,Mo17等 4个骨干系为父本做 7× 4格子方杂交 ,采用增广NCⅡ设计 ,对玉米穗粗的遗传进行了研究。结果表明 :2 8个杂种F1均有不同程度正向优势 ,以Mo17作父本的优势最高 ;2种配合力显著存在 ,且一般配合力达到极显著水平。遗传模型测验结果表明 :穗粗的遗传符合加性 -显性模型 ;增效、减效基因在雌亲、雄亲间的分配无明显差异。穗粗的遗传为超显性遗传 。
Crosses were made between female parents, four self-selective strains and three common self-crossing strains, and male parents,Mo17 and other 3 main strains, using augmented NCⅡ design, to study the inheritance of ear diametre of maize. The results showed that all of 28 F 1 hybrids exhibited positive heterosis in some degrees with the highest heterosis found in cross in which Mo17 was the male parent.Both general and specific combining abilities were found and the specific combining ability was significant. The inheritance of the ear width followed an additive-dominance model. No significant difference was found between male and female parents in the distribution of additive and reductive genes. The ear diametre was inherited in a superdominant fashion with the additive gene as the dominant gene.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2001年第1期12-15,共4页
Journal of Jilin Agricultural University
