Yield Comparison of 29 Maize Lines (Varieties)Planted in Dali and Correlation Analysis of their Main Agronomic Characters
ZHANG Yan-ming
YI Ying-liang
YANG Kun-hong
YANG Zhi-hui
LI Jiang
YANG Shu-xin
LI Li-juan
SUN Bo
WANG Bao-fei
Abstract：This research aimed to determine the relationships among the main agronomic characters of maize lines cultivated in Dali, which will be instrumental in future breeding practices.Between late March to August,2015,29 maize lines (varieties)were planted in Dali to compare their yields,and the relationships among their main agronomic characters were investigated using grey correlation analy-sis.As a result,three lines (9-5,Zhuoyu 299,and Haiyu 92)achieved significantly higher yields than the other tested lines.More-over,grey correlation analysis revealed that different agronomic characters of maize lines were correlated with yield in varying degrees, ranking from high to low as follows:100-kernel weight>shelling percentage>kernel number per row>ear diameter>row number per ear>ear length>bare tip length>growth period>plant height>ear height.The agronomic characters of maize that are closely related to yield should be given priority in future practices for breeding high-yielding maize;meanwhile,the relationships existing among dis-tinct agronomic characters should also be taken into consideration.
Keywords：Maize lines (varieties)YieldAgronomic traitsGrey correlation analysis
Publication Date：2016-07-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 24-29 )