摘要
对2015年25个玉米新组合的13个性状进行灰色关联度分析，结果表明各性状与产量的关联度依次是穗粗、百粒重、行粒数、穗长、穗行数、倒伏倒折率、穗轴直径、出籽率、生育期、株高、穗位高、100 d籽粒含水量，综合评价最优的组合为XX23，与育种目标最接近，其次是XX24和XX21，综合评价最差的组合为XX25，较差的还有XX22、XX14。多性状、多点、多年度考察对玉米新组合评价十分重要，综合灰色关联度加权法使新品种的选育和评价更加科学和客观。
Abstract
Gray correlative analysis was used to evaluate 25 new corn combinations comprehensively.The result showed the order of correla-tive traits of yield by the related degree from large to small was:ear diameter,hundred kernel weight,kernels per row,ear length,ear row num-ber,lodging and break rate,corncob diameter,seed producing rate,period,plant height,ear height,100 d moisture.Variety XX23 recorded high-est comprehensive evaluation value and was the nearest to breeding target, followed by variety XX24 and variety XX21 .Variety XX25 was the lowest among all varieties, variety XX22 and variety XX14 were less perfect either.It’ s important to study the varieties by multi-traits and in multi-loci as well as on multi-ages.The grey correlative analysis makes the breeding and evaluation of new varieties more scientific and objec-tive.
基金项目
国家现代玉米产业技术体系建设专项(CARS－02－58)
国家科技期刊平台
NSTL
维普
万方数据