论文部分内容阅读
本试验以四倍体普通栽培种(Solanum tuberosum)、新型栽培种S.andigena和二倍体杂种(2x S.tuberosum)、双单体×S.phureja 品系为材料,按照不完全双列杂交设计,配制了15个组合。试验结果表明:a.二倍体杂种品系M6、四倍体普通栽培种中的极早熟品种东农303和结蕾期较早的中晚熟品系T8073一般配合力效应较好。东农303×M6和T 8073×M6组合产量和特殊配合力效应值较高,但其小区产量和单株块茎重的特殊配合力效应值低于T×A 组合中的T8024×N2167。因血缘关系,东农303×W5295. 7(二倍体杂种品系)组合产量较低,特殊配合力为负效应。b.相对一般配合力总效应和相对配合力总效应与产量相关达极显著水平(γ_(1,4)=0. 66;γ(3,4) =0. 81) 。相对特殊配合力效应与相对一般配合力总效应及产量间关系不密切(γ(1,2) =0. 23;γ_(2,4) =0. 22) 。
Solanum tuberosum, S.andigena, 2x S. tuberosum, and S. merureja were used as materials in this experiment. According to the incomplete double-line hybridization design , Prepared 15 combinations. The results showed that: a. The results showed that the general combining ability of Dong Nong 303, which is the diploid hybrid line M6 and the tetraploid common cultivars, and the middle and late maturing line T8073, which had the earlier grain-filling stage, were better. The yield and special combining ability of Dongnong 303 × M6 and T 8073 × M6 were higher than those of T × A combination T8024 × N2167. Due to kinship, Dongnong 303 × W5295.7 (diploid hybrid lines) had lower yield and special combining ability with negative effect. b. Relative general combining ability The total effect and the relative combining ability of the total effect and yield reached a significant level (γ_ (1,4) = 0.66; γ (3,4) = 0.81). The relative special combining ability (GCA) effect was not closely related to the general effect and relative general combining ability (γ (1,2) = 0. 23; γ 2,4 (2,4) = 0,22).