黑龙江省玉米杂交种产量与主要产量性状的通径分析  

Path Analysis of Yield and Main Agronomic Traits of Maize Hybrids in Heilongjiang Province

作　　者：刘嘉良 邓杰[1] 于洋[2] 陈卓 王霞[1] 孙芳 高树仁[1] Liu Jialiang;Deng Jie;Yu Yang;Chen Zhuo;Wang Xia;Sun Fang;Gao Shuren(College of Agronomy,Heilongjiang Bayi Agricultural University,Daqing 163319;Academy of Agricultural Sciences Tillage and cultivation Research Institute of Heilongjiang)

机构地区：[1]黑龙江八一农垦大学农学院,大庆163319 [2]黑龙江省农业科学院耕作栽培研究所

出　　处：《黑龙江八一农垦大学学报》2019年第6期7-11,共5页journal of heilongjiang bayi agricultural university

基　　金：黑龙江省科技厅重点研发项目(主要农作物种质资源创新与规模化制繁种技术研究：GA18B101);2019-2021年黑龙江农垦总局重点科研项目“耐密、抗病、高产适宜机收的玉米种质资源创新及新品种选育”

摘　　要：以29份玉米杂交种作为试验材料,随机区组设计,对产量及相关果穗农艺性状进行相关分析和通径分析。结果表明:产量与行粒数(0.581 1**)和百粒重(0.410 9*)呈显著正相关,与穗行数、穗粗和出籽率呈正相关,与秃尖、穗长和轴粗呈负相关,未达到显著水平。通径分析表明,对产量直接影响最大的是行粒数(Px5=0.789 5)和百粒重(Px6=0.587 5)。提高行粒数和百粒重,降低秃尖和轴粗是提高选育玉米品种产量的有效途径。29 maize hybrids were used as experimental materials,randomized block design was used to analyze the correlation and path analysis between yield and related ear agronomic traits. The results showed that there was a significant positive correlation between yield and grain number(0.581 1**) and 100-grain weight(0.410 9*),and positive correlation with ear row number,ear diameter and seed rate. Correlation between yield and bald tip,ear length and axis thickness was negative and did not reach significant level. Path analysis showed that the greatest direct impact on yield was the number of rows(Px5=0.789 5)and 100-grain weight(Px6=0.587 5). Increasing the number of rows and 100-grain weight,reducing baldness and axis thickness was an effective way to improve the yield of selected maize varieties.

关 键 词：玉米杂交种 产量 农艺性状 相关分析 通径分析 

分 类 号：S513.03[农业科学—作物学]