2000～2009年山东省审定玉米品种主要农艺性状分析  

Analysis of Main Agronomic Characters of Approved Maize Hybrids in Shandong Province from 2000 to 2009

作　　者：巩东营[1] 王志武[1] 李杰文[1] 丁照华[1] 方志军[1] 张永涛 吴玉川[3] 

机构地区：[1]山东省农业科学院玉米研究所,山东济南250100 [2]临沂市农业科学院,山东临沂276000 [3]济宁市农业局,山东济宁272000

出　　处：《山东农业科学》2011年第8期21-24,共4页Shandong Agricultural Sciences

基　　金：济南市科技计划专项(高校院所自主创新)"玉米单倍体育种技术在抗粗缩病品种选育上的应用";"863"重大专项"强优势玉米杂交种的创制与应用"

摘　　要：以2000～2009年山东省审定的普通玉米品种为材料,运用简单分析、相关分析和通径分析相结合的方法对其主要农艺性状进行分析。结果表明:玉米果穗秃尖长呈下降趋势,性状改良效果明显;较对照品种的增产幅度呈下降趋势,说明产量水平没有突破;出籽率与产量正相关(R=0.178),出籽率的增加对产量提高的贡献最大,直接通径系数为4.88;生育期与产量亦正相关(R=0.154),说明生育期的变化对产量结果也产生了较大影响,直接通径系数为1.69。The main agronomic characters of approved maize hybrids in Shandong Province from 2000 to 2009 were studied through simple analysis, correlation analysis and path analysis. The results showed that the bare tip length of maize ear showed decreasing trend, so its improving effect was obvious. But the increment of yield decreased compared with the contrast, which indicated there was no breakthrough in maize yield. The kernel rate and growth period positively correlated with the maize grain yield with the correlation coefficient of 0. 178 and 0. 154 respectively and the path coefficient of 4. 88 and 1.69 respectively, so they had larger effects on yield of maize hybrids.

关 键 词：山东省 审定玉米品种 农艺性状 相关分析 通径分析 

分 类 号：S513.01[农业科学—作物学]