甜玉米产量及相关农艺因素的关联分析

目的]探索甜玉米产量相关农艺性状对鲜穗产量影响的主次关系.方法]以灰色系统理论为依据,采用灰色关联度分析法,对甜玉米鲜穗产量与14个农艺性状的相关性进行分析.结果]甜玉米的鲜穗产量是由多种因素共同控制的,农艺性状中影响产量的因素顺序为:穗粗>穗行数>生育期>鲜百粒重>空秆率>秃尖>株高>黑粉病率>行粒数>穗长>穗位>鲜出籽率>倒伏倒折率>双穗率.结论]为了更好的提高甜玉米育种效率,应着重对与产量关联度大的生育期、穗粗、穗行数、鲜百粒重、空秆率等性状的选择,进而选育高产甜玉米品种.

Correlation Analysis on Relationships between Yield and Related Agnomic Factors of Sweet Corn

【Objective】The main purpose of this study was to discuss the effects of the related agronomic traits of sweet cron yield on the fresh ear yield.【Method】The grey related degree analysis is employed to investigate the relationship between the fresh yield of sweet corn and fourteen main agronomic traits in this study.【Result】The results showed that the order of the factors affecting the yield of sweet corn was as follows: ear width> ear row number> growth period> 100 kernels fresh weight> barreness> bare of ear> stem length >smut > kernels per row> ear length> ear position> fresh kernel producing rate> lodging and break> the rate of double ear.【Conclusion】In progress of sweet corn variety development by selection,we should select appropriate growth period,ear width,ear row number,100 kernels fresh weight,high solid rate,on the basis of fresh ear yield.