两个玉米人工合成群体选系的配合力分析  

Analysis on Combining Ability of Inbred Lines from 2 Synthetic Maize Populations

作　　者：秦燕[1] 郭泓鋆 杨新梅[1] 杨洪[1] 赵永康[1] 韩庆新[1] 李兰[1] 

机构地区：[1]成都市农林科学院,四川成都611130 [2]仲衍种业股份有限公司,四川成都610041

出　　处：《安徽农业科学》2015年第20期82-84,102,共4页Journal of Anhui Agricultural Sciences

基　　金：四川省农业重点科技计划经费资助项目;2014年四川省成都市"突破性粮油新品种选育及关键技术集成项目"

摘　　要：以4个自交系为测验种,采用不完全双列杂交设计,对2个玉米人工合成群体新选的20个自交系的配合力及杂种优势进行了研究。结果表明,新选自交系P2-6、P1-1、P1-5和P2-7产量及相关性状一般配合力表现优良,K169×P2-5是产量性状SCA表现较好的组合。与对照比较,杂种优势大于8%的组合多为新选系与测验种K169和南789-2的组配方式。In order to investigate the breeding potentiality of 20 newly inbred lines obtained from 2 synthetic corn populations named P1 and P2,which were test-crossed with 4 local normal maize inbred lines in a NCII mating design. Combining ability and heterosis of 20 newly inbred lines were analyzed in this test. The results showed that the inbred lines P2-6,P1-1,P1-5 and P2-7 had a good performance in GCA of yield and related traits,which should have high use potential in maize breeding programs. The cross K169 × P2-5 had the highest SCA effects. Most of hybrids with control heterosis 8% for yield were the crosses between newly inbred lines and the testers K169 and Nan 789-2,which suggested that it was more possible to obtain high field hybrid combinations.

关 键 词：玉米 群体 自交系 配合力 杂种优势 

分 类 号：S513[农业科学—作物学]