玉米粒度性状的遗传研究

采用Grjfing模式Ⅱ方法Ⅳ10×10双列杂交研究了玉米的三个有关粒度性状的遗传规律。结果认为:粒宽、粒长、粒厚主要是受加性基因效应的支配,而粗厚的非加性效应也占较大比重。三个粒度性状中,以粒长和单株产量的关系最为密切。所以,在玉米育种工作中应在保持粒宽和粒厚的基础上增加粒长,可望提高粒重和单株产量。

A Genetic Study on Kernal-Measure Traits of Corn ( Zea mays L. )

Griffing method IV model E was used to study 3 kernal-measure characters of corn ( Zea mays L. ) in a 10 X 10 diallel cross. The results showed as follows, kernal width, kernal length and kernal depth were mainly determined by addition gene effect, but the no-addition gene effect was important also in kernal depth. Among three kernal-measur characters, the relation between kernal length and single plant yield was the nearest. It was suggested that adding kernal length based on the suitable kernal width and kernal depth could increase kernal weight and single plant yield.