摘要
通过遗传相关分析和主成分分析对 1 1 0个玉米自交系的 1 4个性状进行了研究 .结果表明 :穗重、行粒数、穗长、穗粗、百粒重、株高、穗位高、出籽率占优势的自交系一般单株籽粒产量也高 ;穗行数、茎粗、雄穗长度、雄穗分枝数、生育期等对单株籽粒产量影响不大 ,这些性状要根据生产或育种实践的需要进行选择 .并以主成分值作为选择指数 ,在 1 1
Plant character of 110 inbreds were studied through genetic correlation analysis and principal components analysis. The results show that ear weight, kernel number, ear length, ear diameter, 100 kernels weight, plant height, height of ear location and rate of kernel have high significant positive correlation with yield per plant. It indicates that the more ear weight, more rows of ear, longer ear length, longer ear diameter, more 100 kernel weight, higher plant heihgt, higher height of of ear location and more rate of kernel inbred lines has, the more yied per plant in general; rows of ear, stem diameter, branch number of tassel, length of tassel, period of duration have no significant correlation with yied per plant. this indicate that these chacracters have little effect to yield per plant, they may be selected according to needs of the breeding and cultivating practice. On the base of above, according to the index of principal components,some inbred lines with high yield were selected from 110 inbred lines.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
2001年第1期48-51,共4页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省"九五"农业重大攻关项目! (BG96 5 110 3)
关键词
玉米
自交系
多元方差分析
遗传相关
主成分
maize
inbred line
multivariate variance analysis
genetic correlation
principal component
