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《Journal of Southwest China Normal University(Natural Science Edition)》 2007-01
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Analysis of Trait Comosition of Maize Genotypes Differing in Their Yield Potantials

CHEN Tian-qing~1 XIAN Hong~2 CAI Yi-lin~1* WANG Guo-qiang~1 XU De-lin~1 1.School of Agronomy and Biotechnology,Southwest University,Chongqing 400716,China; 2.Chongqing Seed Administration Station,Chongqing 400060,China  
According to the extent of yield increase as compared with the control variety Nongda 108(CK), 233 varieties/combinations in the preparatory trials in recent three years in Chongqing were divided into 3 types and their traits were compared.High-yielding-type varieties/combinations were characterized by great plant height,long ear-length and long kernel-length.Correlation and path analyses showed that the correlation of yield was most closely correlated with plant height,followed in order by ear height,ear length,kernels per row,1000-kernel-weight,rows per ear,grain shelling percentage and bald top length. The effects of kernels per row and 1000-kernel-weight on yield were direct,while those of plant height, ear height and ear length were indirect.
【Fund】: 重庆市动植物良种创新工程项目(8317).
【CateGory Index】: S513
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