甜玉米主要农艺性状与产量和食用品质的灰色关联度分析

为了探讨甜玉米主要农艺性状对产量和食用品质影响的主次关系,以24个甜玉米杂交组合为研究对象,对株高、穗位高、生育期、穗位叶长、穗位叶宽、穗长、穗粗、穗行数、秃尖长、单穗净鲜重10个主要农艺性状进行了田间调查,对鲜穗食用品质进行了室内蒸煮、品尝与鉴定,并与单穗鲜净重和食用品质进行了灰色关联度分析。结果表明:单穗净鲜重与其他各性状的关联顺序为穗粗穗长穗位叶宽穗行数生育期穗位叶长穗位叶面积穗位高株高秃尖长,食用品质与其他各性状的关联顺序为穗位叶宽秃尖长穗位叶面积穗长穗位高生育期穗位叶长穗粗穗行数株高。在甜玉米高产优质育种中,要注重对果穗长且粗、穗位叶宽且面积较大材料的选择。

Grey Correlative Degree Analysis of Main Agronomic Characters and Yield & Food Quality on Sweet Corn

In order to explore primary and secondary relations of main agronomic characters on yield and edible quality of sweet corn. Twenty-four sweet corn crosses done were studied in this paper. Ten main a-gronomic traits such as plant height, ear height, growth period, ear leaf length, ear leaf width, ear length, ear diameter, ear rows, bald tip length and fresh ear weight were investigated in the field. The edible quality of fresh ear were cooked, tasted and identified in the indoor. Grey relational analysis be-tween 10 agronomic characters and fresh ear weight, edible quality was conducted. The results showed that in sweet corn,the correlation sequence between yield and other traits were ear diameter﹥ear length﹥ear leaf width ﹥ear row number﹥growth period﹥ear leaf length﹥ear leaf area﹥ear height﹥plant height﹥bald tip length. The correlation order between edible quality and other traits were ear leaf width﹥bald tip length﹥ear leaf area﹥ear length﹥ear length﹥growth period﹥ear leaf length﹥ear diameter﹥ear row number﹥plant height. In sweet corn breeding of high yield and good quality, materials which had spike length, spike thick and ear leaf were especially noticed.