陆地棉高强纤维材料的杂种优势及配合力研究

Study on Heterosis and Combining Ability Between High Fiber Strength Strains and Insect-resistant Strains in Upland Cotton (Gossypium hirsatum L.)

以 5个高强纤维材料为母本 ,6个抗棉铃虫品系为父本 ,采用NCⅡ交配设计 ,对 30个组合的杂种F1的产量性状进行分析。结果表明 ,杂种F1竞争优势明显 ,4个性状具有竞争优势 ,其中子、皮棉产量优势最大 ,其次为铃重和单株铃数。通径分析表明 ,单株铃数对皮棉产量效应最大。在配合力上 ,高强纤维材料亲本以 92 0 80 0 7Ⅲ 长 16 952 和 92 0 80 0 7Ⅲ 长 2 2 的GCA较好 ,抗棉铃虫亲本以中R3、中R4 棉的GCA较好。杂交组合 92 0 80 0 7Ⅰ长 5×中R3和 92 0 80 0 7Ⅲ 长 2 2 ×中R3是较理想的高产优质组合。

Thirty F 1 were made using five high fiber strength strains and six insect resistant strains with NCⅡ mating method.Their yield properties were analyzed.The result showed that the hybrid heterosis of the F 1 were obvious.Of the 4 characters,the heterosis of the seed cotton yield and lint yield were the most obvious and the boll weight and bolls/plant were the second.Path analysis indicated that bolls/plant countributed the most to lint yield.In general combining ability(GCA),9208007Ⅲlong 16952 and 9208007Ⅲlong 22 were high in the high fiber strength strains,while CCR 3 and CCR 4 were high in the insect resistant strains.9208007Ⅰlong 5 ×CCR 3 and 9208007Ⅲlong 22 ×CCR 3 were good combinations with high lint yield and fiber qualities.