塔额垦区甘蓝型油菜主要性状与产量的相关性及通径分析  

Correlation and Path Analysis of the Main Traits and Yields of Brassica napus L.in Ta'erken Area

作　　者：王贺亚 孟玲 李怀胜 艾海峰 贾东海 WANG Heya;MENG Ling;LI Huaisheng;AI Haifeng;JIA Donghai(Agricultural Science Institute(Institute of Animal Science)of the Ninth Division of the Xinjiang Production and Construction Corps,Tacheng Xinjiang 834600,China;Xinjiang Uygur Autonomous Region Academy of Agricultural Sciences,Urumqi 832000,China)

机构地区：[1]新疆生产建设兵团第九师农业科学研究所(畜牧科学研究所),新疆塔城834600 [2]新疆维吾尔自治区农科院,乌鲁木齐832000

出　　处：《种子》2023年第4期127-132,共6页Seed

基　　金：第九师科技特派员创新创业项目(2021 JS 015)。

摘　　要：为了研究塔额垦区甘蓝型油菜主要农艺性状与产量的相关关系,明确塔额垦区甘蓝型油菜产量的主要影响因素,以25份塔额垦区甘蓝型油菜为材料,通过主要农艺性状的相关性分析、聚类分析和通径分析,研究产量与各主要农艺性状的相关性。结果表明,塔额垦区甘蓝型油菜种质资源的农艺性状存在较大的标准差和变异系数,变异系数范围在6%~36%之间,其中单株产量变异系数最大,为36%、全株角果数变异系数为24%、分枝高度变异系数为23%;角果粒数、角果长、单株产量、千粒重与产量有较大的正相关,相关系数分别为0.3518,0.3181,0.3095,0.2472。说明角果粒数、角果长、单株产量、千粒重是影响产量的重要因素;聚类分析结果表明,25份资源聚为四大类群,第4类群平均产量最高,为169.73 kg/667 m^(2),可作为高产品种选育;株高、单株产量、角果长、角果粒数、千粒重对产量的直接效应呈正相关,直接通径系数分别为0.6043,0.4064,0.2328,0.2052和0.1770。株高对小区产量的直接作用最大(0.6043),通过单株产量的间接正效应较大(0.2317),分枝高度对产量产生较大负效应(-0.6944),其他性状对产量的间接效应较小。单株产量的直接通径系数为0.4064,且株高产生了极大的正效应(0.3446)。在油菜的选择上应加强对株高和单株产量的选择。塔额垦区甘蓝型油菜的株高、单株产量、角果长、角果粒数、千粒重是影响产量的重要因素,其中单株产量对株高的贡献率最大,株高产生了极大的正效应,所以在甘蓝型油菜高产育种中除了要注重株高的选择外,还应该加强单株产量的选择。In order to study the correlation between the main agronomic characters and the yield of Brassica napus L.in Ta'erken area,and to clarify the main influencing factors of the yield of Brassica napus L.in Ta'erken area,the correlation analysis,cluster analysis and path analysis of the main agronomic characters of 25 Brassica napus L.materials in Ta'erken area were used to study the correlation between the yield and the main agronomic characters.The results showed that the agronomic traits of Brassica napus L.germplasm resources in Ta'erken area had large standard deviation and coefficient of variation,which ranged from 6%to 36%.The coefficient of variation of yield per plant was the largest,which was 36%,the coefficient of variation of the number of corner fruits of the whole plant was 24%,and the coefficient of variation of branch height was 23%.Grain number per plant,pod length and percentage of yield and grain had great positive correlation with yield,the correlation coefficient respectively 0.3518,0.3181,0.3095,0.2472.The results showed that the number of kernels,length of kernels,yield per plant and 1000-grain weight were important factors affecting yield.The results of cluster analysis showed that the 25 resources were grouped into four groups,and the fourth group had the highest average yield(169.73 kg/667 m^(2)),which could be used as high-yield varieties.Plant height,yield per plant,pod length,pod grain numbers per spike,the direct effect on crop yield were positively correlated,direct path coefficients were 0.6043,0.4064,0.2328,0.2052 and 0.1770.The direct effect of plant height on plot yield was the largest(0.6043),and the indirect positive effect through plant yield was larger(0.2317),branch height had a large negative effect on yield(-0.6944),and the indirect effect of other traits on yield was smaller.The direct diameter coefficient of yield per plant was 0.4064,and plant height had a significant positive effect(0.3446).The selection of plant height and yield per plant should be strengthened.Plant hei

关 键 词：甘蓝型油菜 相关性分析 聚类分析 通径分析 塔额垦区 

分 类 号：S565.4[农业科学—作物学]