华北地区90年代玉米杂交种主要农艺性状及增产潜力线性约束分析

Linear-restrict Analysis About Major Agronomic Characteristics and Potential Yield of Maize Hybrid in North China in 1990s

采用线性约束分析法 ,对华北地区 90年代选育的玉米杂交种的主要农艺性状进行了分析研究。结果表明 ,育成杂交种的生育期较短 ,穗行较少 ,千粒重较高 ,穗长偏短 ,穗粗较细。随着产量值域的提高 ,经济性状的表值同步增加 。

By using the linear-restrict analysis, the research analyzed and studied the major agronomic characteristics of maize hybrid selected in 1990s in North China.The results showed that the selected hybrid beared with the shorter growth period,less kernel rows,higher kernel weight,shorter ear length and slighter ear diameter. With the increase of yield threshold,the apparent value of economic characteristic increased at the same time.This shows that the new hybrid possessed higher increase-yield potential.