大蒜品种生态型性状指标分析

Analysis on Eco-Characters of Ecotype of Garlic Varieties

在用１２个生态性状对大蒜生态型进行数量分类的基础上，采用主成分分析和判别分析的方法，分析了区分不同生态型的性状指标．主成分分析表明，越冬期叶片生长量、叶片受冻比率和秋、春播叶片数差比（Ｘ９）在各生态型中比较稳定，可做为区分各生态型的代表性状．判别分析筛选出抽量指数和 Ｘ９为判别各生态型的性状，用这 ２个性状建立的分类函数回判后，判准率为 ９３．２％；研究结果还表明 Ｘ９在生态型分类中有重要意义．

Based on 3 ecotypes classfication of garlic varieties using 12 eco-characters, the eco-characters used to distinguish 3 ecotypes made by principal component analysis (PCA) and discriminant analysis (DA). PCA showed that growing length of leaf in winter, frostbite rate of leaves and reduction rate of leaf number between autumn and spring seeding (X9) have stability among the ecotypes. DA selected X9 and bolting index to distinguish 3 ecotypes at the correct rate of 93.2%. The results also showed that X9 had significance in ecotype classification.