束腰型白菜单株产量性状的通径分析

The path analysis on the main economic characters of pakchoi

对19份束腰型白菜11个性状进行通径分析。单株重与株高、开展度、菜头大小、最大叶叶柄长、最大叶叶柄宽、最大叶叶柄重、最大叶叶长、最大叶叶宽、最大叶叶重以及叶数等性状的相关均达到极显著或显著水平。通径分析结果进一步表明菜头大小、最大叶叶宽、叶数、最大叶柄宽等是影响单株重的主要性状。菜头大小的观测直观方便,可在田间选择时作为选育高产束腰型白菜的重要性状。

Eleven economic characters of pakchoi（ Brassica campestris L. ssp. chinensis Makino var. communis Tsen et Lee）were studied by using path analysis. The results showed there were significant positive correlation between plant weights and plant heights or plant width, head width, petiole length, petiole width, petiole weights, blade length, blade width, blade weights, and leaf numbers. The path analysis suggested that head width, blade width, leaf numbers, and petiole width were the main factors affecting on plant weights of pakchoi. Head width could be used as the main economic character when breeding high yield pakchoi.