玉米杂交种灌浆期穗下第一茎节抗折特性灰色关联度分析  

Grey Correlation Degree Analysis on Breaking Resistance of First Inter-node below Ear on Hybrids of Corn

作　　者：唐海涛[1] 曹万明 梅碧蓉[3] 张彪[1] 陈洁[1] 谭君[1] 康继伟[1] 

机构地区：[1]四川省农业科学院作物研究所,国家玉米改良分中心,四川成都610066 [2]四川资中县农业局,四川资中641200 [3]成都市农林科学院作物研究所,四川成都611130

出　　处：《西南农业学报》2014年第2期495-500,共6页Southwest China Journal of Agricultural Sciences

基　　金：国家科技支撑计划“西南亚热带山地玉米新品种选育与扩繁”(2011BAD35B01)

摘　　要：利用灰色关联度的方法,分析了91个玉米杂交种灌浆期穗下第一茎节抗折力与株高、穗位高、穗下节间长、穗下节间直径、穗下节间均长、穗上节间均长、次生根层数、雄穗主轴长、穗位高/株高、穗下节数/总节数、离地20 cm茎粗、穗下节间茎皮厚等12个农艺性状的灰色关联系数,发现穗下第一茎节抗折力与穗下第一茎节粗、穗下节间均长、穗上节间均长和穗下第一茎节间长关联度高,说明影响玉米杂交种穗下第一茎节抗折力的性状主要是其直径、节间长度和株高;玉米杂交种穗下第一茎节抗折力对其它性状的影响较小。Application of grey relational analysis method was used to analyze the correlation of the breaking resisting characteristics in grain filling stage and agronomic characteristics such as plant height,ear height,length,the stalk width,the inner bark thick and the power of the fracture resistence force of the first inter-node below ear on corn.The results showed that the correlation degree of the fracture resistence force of the first inter-node below ear and width of the first inter-node below ear,average length of inter-node below ear,average length of inter-node above ear,length of the first inter-node below ear was high.This revealed that the effect on the fracture resistence fore of the first inter-node below ear mainly came from the diameter,internode length and plant hight,the fracture resistence force of the first inter-node below ear had small effects on the other characters.

关 键 词：玉米杂交种 穗下第一茎节 抗倒伏(折)性 灰色关联分析 

分 类 号：S513.03[农业科学—作物学]