42个中国南瓜自交系主要农艺性状多样性分析

摘要

In the paper, we investigated and analyzed the main agronomic characters of 42 squash ( ) inbred lines. The results showed that, the squash inbred lines were largely different in fruit characters and leaf characters. The variation coefficient of single fruit weight was maximum of 46.74%, while the variation coefficient of leaf length was minimum of 11.29%. The results of the cluster analysis showed that, the 42 inbred lines were divided into four major groups based on main nutrition contents, and the four groups had a certain regional characteristic, which provided references for cultivar breeding of squash ( ). The results of the principal components analysis showed that, fruit characters and leaf characters were main indexes of botanical diversity of squash.%以42份中国南瓜自交系为材料，对其16个主要农艺性状进行调查和分析。结果表明，中国南瓜在果实性状、叶片性状上差异较大，其中单果质量变异系数最大，达到46.74%，叶长变异系数最小，为11.29%。通过聚类分析，42份材料被分为4个类群，具有一定的地域性特征，对南瓜材料的选择和品种培育有一定指导意义。主成分分析表明，叶片大小、果实形状、单果质量、果实颜色等是植物学多样性的重要指标。