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《Journal of Henan Agricultural Sciences》 2007-01
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Analysis of the Ear-kernel Characteristics of High-oil Maize Hybrids and Normal Maize Hybrids

LI Xue-hui,LIU Yan-xia,WANG Yan-zhao,YU Yong-liang,LI Yu-ling~*(Agronomy College of Henan Agricultural University,Zhengzhou 450002,China)  
Correlation analysis and path analysis was conducted on the 6 ear-kernel characteristics of 2 high-oil maize hybrids(Yuyou1 and HE-1) and 2 normal maize hybrids(Zhengdan 958 and Nongda 108) under six different densities.The results showed that the tendency were not completely consistent between the two kinds of hybrids.For the 2 high-oil maize hybrids,ear length and kernel number per row were positively correlated with kernel weight per ear significantly;the direct path coefficient of kernel weight per ear to grain yield was positive and the largest,(followed) by ear length and kernel number per row.For the 2 normal maize hybrids,100-kernel weight and ear diameter were positively correlated with kernel weight per ear significantly,the direct path coefficients of ear diameter and kernel weight per ear to grain yield were positive and large.The direct path coefficients of 100-kernel weight were all negative for both kinds of hybrids.There were different ways for the two kinds of hybrids to reach high grain yield.
【Fund】: 河南省科技攻关项目(0424020025)
【CateGory Index】: S513
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