Sources of variation for yield, protein content and hectolitre mass of spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape

M. Nel, G. A. Agenbag, J. Purchase
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引用次数: 18

Abstract

In the Western and Southern Cape the quality of wheat varies annually due to variable climatic conditions. This holds a commercial risk to the milling and baking industries in delivering the refined products to their respective clients. It is, therefore, important to classify cultivars and localities according to their ability to produce high quality bread wheat grain. In this study, similar production techniques were used to grow seven spring wheat cultivars at nine localities for the period 1992 to 1995. AMMI analyses were used to describe the effect of genotype, environment and their interaction on grain yield, kernel protein content and hectolitre mass. Environment was found to be by far the most important parameter of variance. No significant genotype × environment interaction was found for grain yield. Although cultivars differed in their yield potential, genotype as a main effect contributed only 1.3% to the variation in yield when compared to 90.7% for environment. Significant genotype × environme...
在西开普省和南开普省,由于气候条件的变化,小麦的质量每年都在变化。这对将精炼产品交付给各自客户的碾磨和烘焙行业构成了商业风险。因此,根据生产优质面包小麦的能力对品种和地区进行分类是很重要的。1992年至1995年,在9个地区采用类似的生产技术种植了7个春小麦品种。利用AMMI分析方法描述了基因型、环境及其互作对籽粒产量、籽粒蛋白质含量和百升质量的影响。发现环境是迄今为止最重要的方差参数。籽粒产量未发现显著的基因型与环境互作。尽管品种间产量潜力存在差异,但基因型对产量变化的主要影响仅为1.3%,而环境对产量变化的主要影响为90.7%。显着基因型×环境…
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