杂交小麦组合的灰色综合评判

Grey multifactorial evaluation of cross combinations in hybrid wheat

利用灰色分析，对２０ 个 Ｋ 型杂交小麦组合进行了综合评判结果表明，单株穗数、主茎小穗数和穗粒数对单株粒重的影响较大， Ｋ 豫３ Ａ×豫麦２ 号等６ 个组合的评判值较高，是有苗头的杂交组合 Ｋ 型不育系中 Ｋ 豫３ Ａ 和恢复系中豫麦２号的平均评判值最高平均评判值高的双亲，其组合的评判值也较高。

By means of grey analysis,20 cross combinations with Ae.kotschyi of hybrid wheat were evaluated multifactorially.The results indicated that ear number per plant,spikelet of main stem and grain number per ear had greater influence on grain weight per plant,the evaluation values of 6 combinations including KYu3A×Yumai No.2 were very high and the 6 ones were potential cross combinations,the average evaluation values of KYu3A in the sterile lines with Ae.kotschyi and Yumai No.2 in the restoring lines were the highest. The higher the average evaluation value of the parents,the higher the average evaluation value of their cross combinations Thus,the average evaluation values of parents can be considered as the basis of performance of cross combinations.