糯玉米鲜穗产量与主要农艺性状灰色关联度分析

Gray Correlation Analysis on Relationship Between Fresh Spike Yield and Main Agronomic Characters in Waxy Corn

为探索桂林地区糯玉米主要农艺性状与鲜穗产量的关系,采用灰色关联度分析法,分析了糯玉米的9个农艺性状与产量的关系。结果表明,糯玉米主要农艺性状与鲜穗产量的关联度由大至小为穗粗>穗行数>株高>穗位高>行粒数>百粒重>穗长>出籽率>秃尖长,穗粗是影响鲜穗产量的主要因素,秃尖长对产量的影响较小。因此,在糯玉米育种中,应以穗粗、穗行数等几个性状为主要目标。

In order to explore the relationship between the main agronomic characters and the fresh ear yield of waxy corn in Guilin,therelationship between 9 agronomic characters and yield of waxy corn was analyzed by gray relational analysis. The results showed that the correlationsbetween the main agronomic characters and the fresh ear yield of waxy corn were as followsear diameter〉ear number〉plant height〉ear height〉numberof rows per plant〉100-grain weight〉ear length〉seedling rate〉tip length. Spike coarse is the main factor affecting the yield of fresh spikes,and the effectof tip length on yield is small. Therefore,in waxy maize breeding,several characters such as ear diameter,ear number should be as the main goals.