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试验用六十—七十年代西北春麦区主要育成品种的亲本,以及目前正在利用的亲本,共50份。考察了株高、抽穗期、有效分蘖、穗长、小穗数、穗粒数、千粒重、单株粒重等九个性状。根据这些性状进行主成分分析和聚类分析。主成分分析与亲本材料的综合表现完全相符。根据主成分选择综合性状优良的亲本与育种实践相符。聚类分析指出:西北春麦区六十—七十年代主要育成品种的亲本遗传距离都很近,同属于一个类群。但是,小麦育种工作要有所突破,应该选择遗传距离较远的材料进行杂交。
In the experiment, the parents of the main breeding varieties in the northwestern spring wheat region in 1960s and 1970s, and the parents currently being used, a total of 50. Nine traits such as plant height, heading date, effective tillering, spike length, spikelet number, spikelet number, 1000-grain weight and grain weight per plant were investigated. According to these traits, principal component analysis and cluster analysis. Principal component analysis is fully consistent with the overall performance of the parent material. According to the principal components of the selection of good trait parents and breeding practice. The cluster analysis indicated that the parents of the main bred varieties in the 1960s and 1970s in Northwest China were close genetic distances and belong to one group. However, a breakthrough must be made in the breeding of wheat, and hybridization should be carried out using materials with more genetic distance.