华北地区不同年代玉米杂交种农艺性状的改良进展  

Improvement Advance on Agronomic Traits of Maize Hybrids from Different Eras in North China

作　　者：谢振江[1] 李明顺[2] 李新海[2] 张世煌[2] 

机构地区：[1]沈阳农业大学农学院,沈阳110161 [2]中国农业科学院作物科学研究所,北京100081

出　　处：《玉米科学》2007年第2期102-106,共5页Journal of Maize Sciences

基　　金：农业部"948"项目(2003-Q03);亚洲玉米生物技术协作网基金(AMBIONETICC5247B24)

摘　　要：2005年在北京和新疆两个生态区采用随机区组设计,对产量、总穗数、穗粒数、千粒重、株高、穗位高、茎倒率、倒伏率、病株率9个农艺性状和不同年代的改良进展进行比较。结果表明:产量、穗粒数、千粒重、株高、穗位高、茎倒率、倒伏率、病株率等不同年代农艺性状差异达极显著水平;北京和新疆的产量改良进展结果相似。试验结果表明玉米杂交种的农艺性状改良发生了显著的变化,穗粒数、千粒重、倒伏率、空秆率及病株率的改良提高了玉米产量。The paper mainly focused on the improvement and law of agronomic traits of hybrids from different eras in north China. The experiments were based on random block design and arranged in Beijing and Xinjiang ecological regions in 2005, and the comparisons among different eras on traits, including yield, total ears, kernels per ear, 1 000 kernel weight, plant height, ear height, stem lodging, root lodging, disease plant rate, have been carried out. The differences among different eras on traits such as yield, total ears, kernels per ear, 1 000 kernel weight, plant height, ear height, stem lodging, root lodging, disease plant rate, have been significantly, and the improvement advances on yield in Beijing and Xinjiang were very similar. The improvement on traits like kernels per ear, 1 000 kernel weight, plant height, ear height, stem lodging, root lodging, disease plant rate has contributed greatly to the yield improvement advance.

关 键 词：玉米杂交种 农艺性状 改良进展 

分 类 号：S513.01[农业科学—作物学]