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对河南省当前生产上推广的12个不同穗型的高产小麦品种(系)在密植条件下的粒叶比及其与产量性状的相关性进行了研究。结果表明,不同穗型的高产小麦品种,其粒叶比存在显著或极显著的差异。穗粒质量/旗叶面积、穗粒数/旗叶面积与产量均呈正相关,且对产量的正向作用明显高于穗粒质量/上二叶面积和穗粒数/上二叶面积。用穗粒数/旗叶面积和穗粒质量/旗叶面积作为高产选择指标效果更好,其适宜范围分别为1.521~1.879粒/cm2、0.076~0.089 g/cm2。粒叶比性状的广义遗传力属于中等偏低水平,其变异系数存在一定的变异幅度。
The grain-leaf ratio and yield-related characters of 12 high-yielding wheat cultivars (lines), which are widely promoted in Henan Province, were studied under close planting conditions. The results showed that there were significant or extremely significant differences in grain-leaf ratio among high-yield wheat cultivars with different panicle types. The grain quality / flag leaf area, spike grain number / flag leaf area was positively correlated with grain yield, and the positive effect on grain yield was significantly higher than that of spike grain weight / upper second leaf area and spike grain number / upper second leaf area. The results showed that grain yield per spike / flag leaf area and spike grain mass / flag leaf area were better than those of high-yield selection index. The suitable range was 1.521 ~ 1.879 / cm2, 0.076 ~ 0.089 g / cm2. The general heritability of grain-leaf ratio traits belonged to the middle-low level, and the coefficient of variation had a certain degree of variation.