摘要
采用Griffing 2设计 ,对玉米株型性状的遗传 ,亲子相关以及玉米株型育种亲本选配的一些规律进行了研究。结果表明 ,不同亲本之间玉米株型性状遗传力差异很明显。故在玉米株型育种时 ,要先对目标性状进行配合力研究 ,以增加预见性 ,减少盲目性。同时 ,要组配紧凑型杂交种 ,必须是双亲均为紧凑型 ;要组配半紧凑型杂交种 ,亲本之一必须是紧凑型或中间类型 ,另一亲本可以是中间类型或平展型 ;平展型亲本之间以及平展型和中间型亲本之间 ,只能组配出平展型杂交种。
The inheritance and its correlation between parents and F 1 for some plant type characters,the genetic law of parent selection of plant type breeding in maize were studied with the Griffings method Ⅱ.The results indicated that the inheritance ability of plant type characters in different parents had significant difference,and the combining ability of same character but in different parents or each character of same parent were significant difference.The inheritance and combining ability of the target characters should be considered in selecting maize plant type to increase the efficiency of breeding.The results also revealed that its two parents should be compact type when combining compact type hybrid;one of its two parents should be compact or half compact type when combining half compact type hybrid.Horizontal leaf type parents could only produce horizontal leaf type hybrid.
出处
《西南农业学报》
CSCD
北大核心
2000年第1期50-54,共5页
Southwest China Journal of Agricultural Sciences
