Multiple Analysis of Main Agronomic Traits and Yield of 18 New Maize Combinations
CHEN Guobin
LIU Tingting
XIE Zhijian
MENG Jingjiao
LI Yancong
YANG Jianguo
Abstract：The relationship between main agronomic traits and yield of maize was studied by correlation analysis,path analysis and grey correlation analysis based on the results of multi-point joint identification test of Maize in Yunnan Province in 2024.The results showed that among the main agronomic traits,the correlation degree with yield(correlation coefficient)was as follows:diameter(0.708 9)＞ear length(0.632 5)＞100 grain weight(0.538 1)＞rows per ear(0.512 1)＞seed yield(0.496 3)＞bald tip length(0.291 2)＞grains per row(0.218 0)＞ear height(-0.176 4)＞growth period(-0.177 8)＞plant height(-0.385 4)The contribution to yield(direct path coefficient)was as follows:ear diameter(0.381 0)＞ear length(0.345 5)＞seed yield(0.281 5)＞100 grain weight(0.243 1)＞rows per ear(0.206 6)>grains per row(0.157 8)＞ear height(0.155 8)＞bald tip length(-0.186 3)>growth period(-0.190 0)＞plant height(-0.196 8).The order of the correlation degree with yield was ear diameter(0.456 6)＞rows per ear(0.444 3)＞seed yield(0.409 0)＞ear length(0.392 8)＞bald tip length(0.369 0)＞100 grain weight(0.363 0)＞grains per row(0.347 0)＞growth period(0.269 2)＞plant height(0.250 3)＞ear height(0.231 3).The main factors affecting the yield of maize were ear diameter,ear length,seed yield and rows per ear.
Keywords：CombinationAgronomic traitsYieldCorrelation analysisPath analysisGrey relational analysis
Publication Date：2025-08-28
Online Publishing Date：2025-09-23(First online date of this platform, not the publication date of the document)
Pages：5( 22-26 )