河南农业科学2013，Vol.42Issue(7)：14-18,5.
CIMMYT热带玉米种质在温带地区的改良利用
Improvement and Application of Tropical Maize Germplasms from CIMMYT in Temperate Regions
摘要
Abstract
One hundred and sixty crosses between 20 tropical inbred lines and 8 temperate inbred lines of maize were used to study their growth periods,yield,plant morphological traits and ear characters in mid-region of Jilin province.The results indicated that the progenies of tropical lines with early-maturing temperate lines He 344 and four-287 etc.reduced in photoperiod sensitivity.The hybrids between tropical lines and temperate lines had a certain yield-increasing potential.Relatively,the tropical'lines presented the strongest heterosis with line Lüdahonggu,and the weakest heterosis with line Lancaster in grain yield.In ear and plant characters,the tropical-temperate hybrids had great difference with CK,and the effect of different temperate lines in crosses was very different.For example,line 9046 increased the ear length,line Mo17 increased the kernel number per row,and line four-287 decreased the barren tip and increased the kernel weight.关键词
玉米/熟期/光敏感性/产量/CIMMYTKey words
maize/mature stage/photoperiod sensitivity/yield/CIMMYT分类
农业科技引用本文复制引用
苏义臣,苏桂华,金明华..CIMMYT热带玉米种质在温带地区的改良利用[J].河南农业科学,2013,42(7):14-18,5.基金项目
农业部"948"项目(2011-G1(3)-21) （2011-G1(3）
吉林省科技发展计划项目(20110201) （20110201）
吉林省现代农业产业技术体系建设项目 （）
吉林省科技发展计划项目-不同类型抗逆稳产春玉米新品种筛选与示范 （）
