夏玉米主要农艺性状与产量的相关分析  

The the correlation analysis between The Main agronomic characters of Shanxi summer corn and output

作　　者：郭强[1] 杨引福[1] 蔺崇明[1] 陈靖[1] 郑小娅[1] 刘晋跃[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100

出　　处：《农业科技通讯》2009年第2期34-35,54,共3页

基　　金：2008年陕西省科学技术研究发展计划项目(2008K01-10)

摘　　要：通过对198个夏玉米杂交种的10个主要农艺性状进行多元逐步回归分析、通径分析、相关分析,得到以下结论:空秆率、倒折率对小区干重负作用影响最大,穗长、行粒数、百粒重直接影响杂交种产量;倒折率与空秆率成极显著正相关,说明倒折率越高,空秆率也越高,即倒折率是导致空秆的主要因素,进而对产量造成很大的影响。因此,在今后的玉米育种中除了注重玉米产量和抗病、抗虫外,玉米的抗倒能力也是我们今后玉米育种的一个重要目标。through the latus rectum analysis, the correlation analysis, the multi-dimensional stepwise regression analysis for 198 summer corn hybrid varieties, draws the following conclusion： the air stalk rate, folding rate is but actually biggest to the plot dry weight negative effects influence, ear length, row kernels, 100-grain weight immediate influence hybrid output; folding rate becomes a highly significant positive correlation with t air stalk rate, explained that folding rate is but actually higher, air stalk rate are also higher, namely but actually folding rate causes air stalk fate＇s primary factor. ③ Between the mail department character exists promotes mutually with the incidence relation which restricts mutually.So,the corn breeding in the future except paying attention to the output and resist ills and resist pest,the ability of resist corn loding should become a import purpose in the future of corn breeding.

关 键 词：夏玉米 农艺性状 产量 相关分析 

分 类 号：S513[农业科学—作物学] O212.1[理学—概率论与数理统计]