高产玉米新品种产量形成机制  

Mechanism of Yield Formation of High-Yield New Maize Hybrids

作　　者：谢振明[1] 冯军[1] 吴江[1] 李晓伟 赵新华[1] 杨春影[1] 

机构地区：[1]长春市农业科学院,长春130111 [2]长春农博园,长春130118

出　　处：《吉林农业科学》2014年第6期9-11,16,共4页Journal of　Jilin Agricultural Sciences

摘　　要：选用吉林省14个主推玉米新品种为试验材料,采用相关分析和通径分析方法,通过其主要农艺性状与单株产量之间关系,分析高产玉米新品种产量的形成机制。结果表明,玉米棒三叶叶面积与单株产量呈极显著正相关关系;玉米根系在玉米吐丝期至蜡熟期与单株产量呈显著正相关关系;穗部性状与单株产量的相关系数从大到小依次为行粒数、粒深、出子率、穗长、百粒重、穗粗、穗行数,其中穗长、行粒数、粒深、百粒重、出子率对单株产量的重要性最大。Fourteen main maize varieties of Jilin province were selected as test material and correlation analysis and path analysis used, the relationship between main agronomic characters and yield per plant was analyzed, and yield formation mechanism of high-yield new maize hybrids were studied in the paper. The results showed that the area of corn cob three leaves was positively and significantly related to yield per plant. From corn silking stage to the dough stage the corn roots was positively correlated with yield per plant. The correlation coefficient of spike traits and yield per plant from large to small was grains per row, kernel depth, kernel rate, ear length, kernel weight, ear diameter, rows per ear, which ear length, kernels per row, kernel depth, kernel weight, kernel rate were the greatest importance to the yield per plant.

关 键 词：玉米 新品种 产量 形成机制 

分 类 号：S513[农业科学—作物学]