CIMMYT种质对东农250亲本自交系的改良效果研究.pdfVIP

中国农学通报 2009,25(19):55-58 Chinese Agricultural Science Bulletin CIMMYT 种质对东农250 亲本自交系的 改良效果研究 1,2 2 3 2 2 2 董 玲 ，金 益 ，孙艳杰 ，于天江 ，李 严 ，郭 然 1 2 ( 沈阳农业大学农学院，沈阳110161；东北农业大学农学院，哈尔滨150030； 3 黑龙江省农科院绥化分院,绥化152052) 摘 要：将CIMMYT 种质Pob46 和Pob45 分别导入东农250 的父本自交系吉846 和母本自交系444 中，研 究CIMMYT 种质对其产量及其他农艺性状的改良效果。结果表明吉846 改良系和444 改良系所配杂交 组合的株高及穗位均有所降低，有利于增强组合的抗倒伏性；百粒重普遍增加但产量普遍降低，仅有个 别组合增产；其它性状如雄穗一级分支数和行粒数等，二者改良效果有所不同。 关键词：玉米；种质；改良 中图分类号：S513 文献标识码：A 论文编号：2009-1021 Study on Improvement Effect of CIMMYT Germaplasm to the Inbreds of a Corn Hybrid Dongnong250 1,2 2 3 2 2 2 Dong Ling , Jin Yi , Sun Yanjie , Yu Tianjiang , Li Yan , Guo Ran 1 ( College of Agronomy,Shenyang Agricultural University,Shenyang 110161; 2 College of Agronomy,Northeast Agricultural University, Harbin 150030; 3Suhua Institute of Heilongjiang Academy of Agricuhural Sciences, Suihua Heilongjian 152052) Abstract: CIMMYT germaplasm Pob46 and Pob45 were introduced respectively the male inbred lines Ji846 and female inbred lines 444. The improvement effect of yield and other agronomic characters was studied. It showed that in the hybrids crossed by the improved lines of Ji846 and 444, plant height and ear height were decrease, lodging resistance character was enhanced, ear-kernel weight was increased,. The yield of these crosses decreased common