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对从提型杂种小麦多环境试验(2年份×4地点×4重复×16个杂种)获得的七个产量有关性状的数据进行联合方差分析、联合协方差分析,估算出表型、基因型、环境、基因型×环境互作的方差分量和协方差分量,在此基础上进行各效应的简单相关分析,逐步回归--通径系数的联合分析,进而估算出恢复度及几个产量有关性状的不同效应分量的直接和间接通径系数、决定系数和恢复度对单株产量的直接决定度。分析结果表明,恢复度与单株产量之间存在着显著的表型,基因型,基因型×环境互作正相关,恢复度对产量的直接决定作用及其与穗粒数、千粒重、有效穗数等性状对产量的联合决定作用都是重要的,从遗传、环境、基因型×环境互作的角度看,其作用的方向和相对大小各不相同。文中对各性状的环境变异特点,恢复性改良及后代选择等问题作了讨论。
The data of seven yield-related traits obtained from the multi-environmental test of the breeder wheat (2 years × 4 place × 4 repetitions × 16 hybrids) were analyzed by the joint variance analysis and the covariance analysis to estimate the phenotype, genotype, Environment, genotype × environment interaction variance components and covariance components, on the basis of simple correlation analysis of each effect, step by step regression - path coefficient joint analysis, and then to estimate the degree of recovery and several yield-related traits The direct and indirect path coefficients of different effect components determine the direct determinations of plant yield per unit of coefficient and recovery. The results showed that there was significant phenotype, genotype and genotype × environmental interaction between recovery degree and yield per plant, and the direct determinant effect of recovery on yield and its relationship with the number of grain per spike, thousand-grain weight, Number and other traits on the joint determination of yield are important, from the perspective of genetic, environmental, genotype × environmental interaction perspective, the role of the direction and relative size vary. In this paper, the characteristics of environmental traits of each trait, the restorative improvement and the choice of future generations are discussed.