柞蚕幼虫腹足趾钩的初步研究及主成分分析

Preliminary Study and Principal Component Analysis on Crochet of Larvae Abdominal Legs of Antheraea pernyi

调查了20个柞蚕品种幼虫腹足趾钩的数量、长度及其与若干经济性状的相关性。柞蚕幼虫腹足趾钩数量和趾钩长度品种间差异显著,趾钩数量雌雄间差异不显著,但趾钩长度雌雄间差异极显著。趾钩数量和长度与多数经济性状呈较弱的负相关,表明柞蚕幼虫腹足趾钩数量和趾钩长度可为柞蚕育种提供依据。对21项经济性状和趾钩数据的主成分分析结果表明,柞蚕幼虫趾钩数量及长度对柞蚕分类研究有重要的参考意义。

The correlation between several economic traits and numbers and length of crochet of abdominal leg of Antheraea pernyi larvae were investigated. The result showed that the difference of either numbers or length of crochet of Antheraea pernyi larvae is significant among different varieties, and the gender difference of crochet length is extremely significant,while which of crochet numbers is not significant. Crochet numbers and crochet length have negative correlation with most economic traits, indicating that crochet numbers and crochet length could be taken as reference in tussah silkworm breeding. The principal component analysis based on 21 economic traits and crochet data showed that crochet numbers and crochet length of Antheraea pernyi larvae are of obvious significance for classification of Antheraea pernyi.