摘要
采用主成分分析和聚类分析的方法对柞蚕品种资源的性状进行评价和归类,有利于提高柞蚕品种资源鉴定的效率及育种亲本的合理、有效选择。对16份柞蚕品种资源的主要经济性状进行主成分分析,从调查的16个主要经济性状选取出综合产量因子、茧丝效率因子、生命力因子和茧丝产量因子4个主成分,这4个主成分代表了16个主要经济性状信息总量的83.068%,其中包含有关茧丝性状的信息较多。基于4个主成分值的聚类分析,可将16份柞蚕品种资源划分为4个类群,每个主成分在各类群的表现:综合产量因子为第1类群>第2类群>第3类群>第4类群,茧丝效率因子为第4类群>第2类群>第1类群≈第3类群,生命力因子为第4类群>第1类群>第3类群>第2类群,而茧丝产量因子在各类群的排列规律不明显。依据4个主成分对16份柞蚕品种资源进行综合评价,三里丝和定州1号排列前位。
Assessment and classification on traits of tussah silkworm germplasm resources by means of principal component analysis and cluster analysis are benificial for high efficiency identification on tussah silkworm germplasm resources and rational and effective selection of parent variety for breeding. In present study, the principal component analysis was used to evaluate major economic characters of 16 tussah silkworm varieties. Four principal components, namely comprehensive productivity factor, cocoon filament efficiency factor, vitality factor and cocoon filament yield factor, were extracted from the investigated 16 major economic characters. The four principal components represented 83. 068% of total information from the 16 economic characters, with relatively high percentage of information on cocoon filament traits. According to the result of cluster analysis on four principal components, the 16 tussah silkworm varieties could be divided into 4 groups. The representation of each principal component in the four groups were as follows. G1 〉G2 〉 G3 〉 G4 for comprehensive productivity factor, G4 〉 G2 〉 G1 ≈G3 for cocoon filament efficiency factor, G4 〉 G1 〉G3 〉G2 for vitality factor, and no obvious tendency for cocoon filament yield factor. An evaluation to 16 tussah silkworm varieties based on these four principal components indicated that Sanlisi and Dingzhou 1 ranked at first places.
出处
《蚕业科学》
CAS
CSCD
北大核心
2010年第3期513-518,共6页
ACTA SERICOLOGICA SINICA
关键词
柞蚕品种资源
性状评价
主成分分析
聚类分析
综合产量因子
茧丝效率因子
生命力因子
茧丝产量因子
Antheraea pernyi germplasm resources
Trait evaluation
Principal component analysis
Cluster analysis
Comprehensive productivity factor
Cocoon filament efficiency factor
Vitality factor
Cocoon filament yield factor
