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为明确在覆膜滴灌条件下玉米品系(种)主要农艺性状与产量的关系,应用DPS软件对15个玉米杂交品系(种)的主要农艺性状和产量性状进行相关性、灰色关联度等分析,结果表明:籽粒重、穗重、产量的变异系数较大;玉米产量与生育期、籽粒水分含量、穗重、籽粒重呈显著正相关关系;聚类分析可将参试的15个品系(种)划分为3类,第Ⅲ类表现良好,值得进行推广种植。灰色关联度分析表明,玉米籽粒重、穗重、生育期、籽粒水分含量等性状是影响玉米产量的主导因素,在玉米高产育种中,应以其为主攻目标,提高玉米后代的有效选择,加速高产育种进程。
In order to clarify the relationship between the main agronomic traits and yield of maize lines under drip irrigation with mulching film, the correlations and gray correlations between the main agronomic traits and yield traits of 15 maize hybrid lines were analyzed by DPS software. The results showed that the coefficient of variation (CV) of grain weight, ear weight and yield were large. There was a significant positive correlation between the yield of corn and the growth period, grain water content, panicle weight and grain weight. Cluster analysis showed that the 15 tested cultivars ) Is divided into three categories, the third category performed well, it is worth to promote planting. Gray correlation analysis showed that grain weight, ear weight, growth period, grain moisture content and other traits were the dominant factors affecting the yield of maize. In maize high yield breeding, it should be the main target to improve the effective selection of maize offspring and speed up High-yielding breeding process.