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因子分析结果表明，１１个小麦品种（系）的１０个与产量密切相关的农艺性状、生理指标受２个独立公因子制约。被确认和命名的公因子是：Ｆ１，光合同化因子；Ｆ２，产量构成及植株碳、氮营养因子；２个公因子累积方差贡献率为８５．４２％。多元统计分析表明，小麦产量与２个公因子Ｆ１，Ｆ２之间存在着极显著线性关系。以公因子为指标进行系统聚类，将１１个品种分为三大类型。不同类型品种Ｆ１、Ｆ２的大小和相互协调方式不同，直接导致品种（系）产量水平不同。
The result of factor analysis showed that 10 agronomic traits closely related to yield and physiological index of 11 wheat cultivars (lines) were restricted by two independent common factors. The common factors identified and named are: F1, photosynthetic factor F2, yield components and plant carbon and nitrogen nutrition factors, and the cumulative contribution rate of two common factors is 85.42%. Multivariate statistical analysis showed that there was a significant linear relationship between wheat yield and two common factors F1 and F2. Taking the common factor as the index to carry on systematic clustering, the 11 varieties are divided into three types. Different types of F1, F2 size and coordination of different ways, a direct result of varieties (lines) different levels of output.