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莴笋的产量性状是一个十分复杂的数量性状，它受到很多性状的制约和影响；而这些性状之间又存在着不同程度的相关性。本文通过对莴笋产量形成有关的性状，即株高、株展、叶数、叶重、茎长、茎粗６个性状的简单直线相关和通径系数的分析，估测各性状对产量形成影响的相对重要性
The yield trait of lettuce is a very complex quantitative trait, which is restricted and influenced by many traits. There are some correlations between these traits. In this paper, we analyzed the simple linear correlation and path coefficient of the traits related to the yield formation of lettuce, namely the plant height, plant height, leaf number, leaf weight, stem length and stem diameter, and estimated the effects of the traits on the yield formation The relative importance of