江西农业学报2025，Vol.37Issue(12)：33-38,48,7.DOI:10.19386/j.cnki.jxnyxb.2025.12.005
马铃薯产量与主要农艺性状的通径分析
Pathway Analysis of Yield and Main Agronomic Traits in Solanum tuberosum
摘要
Abstract
Using 10 potato varieties as experimental subjects,this study analyzed the effects of five major agronomic traits including growth period(X1),plant height(X2),number of main stems per plant(X3),tuber dry matter content(X4),and medium-to-large tuber rate(X5)on potato yield(Y)through correlation analysis,multiple linear regression analysis and path analysis.The results showed that medium-to-large tuber rate,plant height and growth period were the primary factors influencing potato yield.Correlation analysis revealed a highly significant positive correlation between medium-to-large tuber rate and yield(r=0.449),while plant height showed a significant positive correlation with yield(r=0.273).Increasing plant height and medium-to-large tuber rate could enhance potato yield.Multiple linear stepwise regression analysis demonstrated that the optimal regression equation for potato yield was Y=-65.058+0.454X1+0.459X2+0.720X5.Path analysis coefficients revealed that growth period and plant height exerted indirect effects on yield through medium-to-large tuber rate with coefficients of-0.242 and-0.240 respectively,indicating their substantial influence on potato yield via this pathway.关键词
马铃薯/产量/农艺性状/通径分析Key words
Solanum tuberosum L./Yield/Agronomic trait/Path analysis分类
农业科技引用本文复制引用
ZHANG Yang,XIN Jia-jia,TU Yu-qin,ZHANG Nan-feng,TANG Jie..马铃薯产量与主要农艺性状的通径分析[J].江西农业学报,2025,37(12):33-38,48,7.基金项目
江西现代农业科研协同创新专项"江西省薯类作物特色地方品种资源繁种鉴定与优异性状挖掘利用"(JXXTCX202205). （JXXTCX202205）
