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对 1 0个小麦品种 (系 )的株高构成指数进行了研究。结果表明 ,株高构成指数在品种间存在着极显著差异 ,该值的提高可通过杂交选择来实现。各I值与克草粒数、经济系数和籽粒产量均呈正相关 ,I1值与产量的相关达到了极显著水平 ,可作为高产育种的重要筛选指标。
The plant height composition index of 10 wheat cultivars (lines) was studied. The results showed that the compositional index of plant height was significantly different among the cultivars, and the increase of the value could be achieved through hybridization selection. The I values were positively correlated with kernel weight, economic coefficient and grain yield. The correlation between I1 and yield reached an extremely significant level, which could be used as an important screening index for high-yielding breeding.