河南农业科学2012，Vol.41Issue(6)：19-23,5.
155份玉米自交系的类群鉴定和主成分分析
Principal Component Analysis and Group Identification of 155 Maize Inbred Lines
摘要
Abstract
This study utilizd the methods of principal component analysis and cluster analysis to analyze the 14 properties (days from sowing to emergence, from emergence to tasseling and from emergence to shedding and from emergence to silking,plant height,ear height,ear length,ear diameter,rows per ear, kernels per row, shaft diameter, 1 000-grain weight, leaf number, tassel branch number) of 155 maize inbred lines. The result showed that seven factors related to growth period, big ear, kernels per ear, plant height,loose powder,environment,and 1 000-grain weight were principal components. The seven principal components accounted for 85. 57% of total variations,and could reflect the information of all properties. When the threshold value was 4.16,the tested materials were divided into 5 groups. Group 1 contained 15 varieties,accounting for 9. 7%;Group 2 contained 28 varieties,accounting for 18. 1%; Group 3 contained 31 varieties,accounting for 20//o;Group 4 contained 61 varieties,accounting for 39. 4%;Groups 5 contained 20 varieties,accounting for 12. 9%.关键词
玉米自交系/主成分分析/聚类分析/类群鉴定Key words
maize inbred lines/principal component analysis/cluster analysis/group identification分类
农业科技引用本文复制引用
刘忠祥,寇思荣,何海军,王晓娟,周玉乾,李志明,杨彦忠..155份玉米自交系的类群鉴定和主成分分析[J].河南农业科学,2012,41(6):19-23,5.基金项目
甘肃省科技重大专项(0801NKDA016) （0801NKDA016）
