吉林农业大学学报2016，Vol.38Issue(6)：663-670,8.DOI:10.13327/j.jjlau.2017.3256
国外Iodent玉米种质WY11对塘四平头群自交系“四287"的改良效果
Improvement Effect of Foreign Iodent Maize Inbred WY11 on Inbred Line "Si 287" of Tangsipingtou Group
摘要
Abstract
In the study,WY11,Si287 and four improved lines were crossbred with five key inbred lines by NCII mating design.The density-tolerance and combining ability were studied by Split-plot experiment design and Randomized block design.The results showed that inbred line WY11 had the highest plant (208.2 cm),higher ear weight (80.2 cm),middle ear tip length (0.86 cm),higher empty stem(2.2％)and lower density-tolerance,and it was very sensitive to density pressure.Si287 had the lowest plant (173.5 cm),lower ear weight (57.8 cm),short tip length (0.12 cm),lower empty stem (0.3％)and high density-tolerance,and it was insensitive to density pressure.Plant height,ear height,empty stem and tip length of W87-3 were 180.4 cm,64.2 cm,0.4％ and 0.93cm,respectively.It had high density-tolerance and was averagely sensitive to density pressure.Density-tolerance of W87-1,W87-2 and W87-4 was lower.WY11 had the highest general combining ability (3.57),and W87-3 and Si287 had higher general combining ability (3.27 and 3.22).Si144×WY11 and Si144×W87-3 had higher total combining ability and potential utilization in maize breeding,and could be used to breed maize variety of high yield and dense planting.W87 -3 was a successful improved line.关键词
玉米/Iodent种质/塘四平头群/改良效果Key words
maize/Iodent germplasm/Tangsipingtou group/improvement effect分类
农业科技引用本文复制引用
马占林,张建华,李大勇,王振南..国外Iodent玉米种质WY11对塘四平头群自交系“四287"的改良效果[J].吉林农业大学学报,2016,38(6):663-670,8.基金项目
科技型中小企业技术创新基金项目(12C26212201302) （12C26212201302）
