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研究了３２个高粱核质杂种旗叶和倒二叶叶片比叶重及其与双亲叶片比叶重的变化关系。结果表明，高粱核质杂种旗叶和倒二叶比叶重与其父本呈显著的正相关关系（ｒ＝０８６３６，０９３７３），而与其母本无相关关系。
The relationship between specific leaf weight and specific leaf weight of flag leaf and upside down leaf of 32 sorghum hybrids was studied. The results showed that there was a significant positive correlation between the leaf weight of flag leaf and the second leaf ratio of Sorghum hybrids and their male parents (r = 08636,09373), but no correlation with the female parent.