摘要
以8个具有不同雄穗性状的糯玉米自交系为材料,按照GriffingⅣ的双列杂交,进行糯玉米雄穗主轴长度、分枝数两个性状的配合力效应及相应的遗传参数研究。结果表明:雄穗分枝数的GCA值为N27>N34>N46>N7>N8>N4>N28>N23;雄穗主轴长度的GCA值为N7>N28>N23>N27>N34>N46>N4>N8;糯玉米雄穗主轴长度、分枝数性状遗传主要由加性基因效应控制,此外还受非加性基因效应控制;不同自交系之间存在不同效应大小和正负作用方向的差异,特殊配合力在不同组合间也存在显著差异;遗传力估算结果表明,雄穗主轴长度和分枝数的广义遗传力分别为66.03%和60.25%;雄穗主轴长度和分枝数的狭义遗传力分别为57.87%和31.28%,说明雄穗主轴长度在早代进行选择效果较好。
Eight inbred lines of waxy corn with different tassel traits were taken as materials. According to the Griffing diallel method 11, the combining ability effect and genetic parameters of tassel length and tassel branch number were studied. The results showed that the order of tassel branch number GCA value was N27〉N34〉N46〉N7〉N8〉N4〉N28〉N23, and the tassel length order of GCA value was N7〉N28〉N23〉N27〉N34〉N46〉N4〉N8; The inheritance of tassel length and tassel branch number were mainly controlled by additive genes, and affected by non-additive genes as well; The effects of combining ability among different inbred lines with the different extend of postive and negative effects; The difference in special combining ability among combinations was also obvious; According to the calculating of heritability, the generalized heritability of tassel length and tassel branch number were 66.03% and 60.25%, respectively; the narrow heritability of tassel length and tassel branch number were 57.87% and 31.：28%, respectively. It showed that the tassel length had better choose effect in low generation.
出处
《广东农业科学》
CAS
CSCD
北大核心
2011年第20期25-27,共3页
Guangdong Agricultural Sciences
基金
广东省财政厅农业综合开发省级科技推广项目(B6071310)
关键词
糯玉米
配合力效应
雄穗性状
遗传参数
waxy corn
combining ability effect
tassel traits
heritability parameter
