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采用GriffingⅥ对6个国内温带高油系和4个热带系进行组配,将组配的45个杂交组合在云南省昆明、德宏两种不同的生态环境下进行农艺性状配合力分析和遗传参数估算。结果表明:热带系YML146、CML166、CML161、CML171是综合性状配合力表现较优良的种质材料,在高油玉米生产及育种上具有较大的利用潜力,是拓宽温带高油玉米种质遗传基础较好的种质资源;产量特殊配合力(SCA)效应值为正值的组合多数为温带高油系×热带系和热带系×温带高油系,说明温带高油玉米种质与热带种质具有较大的遗传差异,该组合模式具有较大利用价值。主要农艺性状的加性方差均大于非加性方差,说明这些性状主要表现加性遗传效应,可在早期世代进行选择。
Six domestic temperate high-oil and four tropical plants were assembled using Griffing VI. Combining ability analysis and genetic parameters of agronomic traits in 45 hybrid combinations were carried out under two different ecological environments in Kunming and Dehong of Yunnan Province. Estimated. The results showed that the tropical line YML146, CML166, CML161 and CML171 are germplasm materials with better comprehensive combining ability. They have great potential in the production and breeding of high-oil corn and are the genetic basis for broadening the germplasm of temperate high-oil corn Better germplasm resources. The majority of combinations with positive SCA values were temperate high-oil series × tropical series and tropical series × temperate high oil series, indicating that the temperate high-oil corn germplasm and tropical germplasm Has a greater genetic differences, the combination of mode has great value. The additive variances of major agronomic traits were greater than those of non-additive variances, which indicated that these traits mainly showed additive genetic effects and could be selected in the early generation.