玉米Stock6的遗传特性及其在玉米育种上的应用

普通玉米与Ｓｔｏｃｋ６杂交，单倍体诱导率为０．５６％～２．５２％，平均诱导率为１．１４％；单倍体自然加倍率为９．６４％～１６．５３％，平均为１２．００％。单倍体加倍成二倍体纯系中，父母本的基因频率为１：１，表明单倍体的发生是一种完全随机的现象。当Ｓｔｏｃｋ６单个精核参与受精时，具有与卵细胞选择受精的特性。研究结果表明，利用玉米Ｓｔｏｃｋ６诱导单倍体，加倍成二倍体纯系，是快速选育玉米自交系的有效方法之一。

Genetic Characteristics of Maize Inbred Stock6 and Its Application in Breeding

Crossing common maize with inbred Stock6 induced 0.56% -2.52% of haploid plants (1.14% in average), with natually doubling rate being 9.64% -16.53% (12. 00% in average).The 1:1 gene frequency of male and female parents among pure lines of double haploids showed that emergence of haploid was a complete random phenomenon. Single sperm nucli of Stock6 often selectly fertilized with ootids. Results showed that inducing haploid from Stock6 and doubling it to get double haploid was an efficient way for rapid creating maize inbred.