贵州育成杂交玉米品种的产量变化与种质基础  

Yield Change and Germplasm Basis of Hybrid Maize Varieties Bred by Guizhou Province

作　　者：郭向阳 陈泽辉 祝云芳 王安贵 胡兴[1,2] 兰琴英[1,2] 

机构地区：[1]贵州省旱粮研究所,贵州贵阳550006 [2]贵州大学农学院,贵州贵阳550025

出　　处：《西南农业学报》2014年第4期1353-1357,共5页Southwest China Journal of Agricultural Sciences

基　　金：贵州省科技厅农业攻关项目:"优良热带玉米Suwan群体遗传潜势及种质改良创新研究"[黔科合NZ(2013)3004];贵州省农业重大专项:"玉米种质改良创新和新品种选育及产业化应用"[黔科合重大专项字(2013)6022]

摘　　要：为贵州杂交玉米新品种的选育提供参考,统计分析了2000-2012年贵州省审定115个杂交玉米品种的产量变化及其亲本种质基础。结果表明:12000-2012年贵州省育成杂交玉米品种的产量由500 kg/667m2左右逐步增加到近年的615 kg/667m2以上,且审定品种与对照品种的产量增幅逐渐缩小,对照品种在年际间的稳产性逐渐增强。2贵州省杂交玉米品种的种质基础主要是Suwan、PB、地方种质和Reid种质,suwan(PB种质)×改良Reid种质是贵州省的玉米杂优模式之一,也是贵州省抗逆性和丰产性玉米育种的代表模式。The yield change and germplasm basis of 115 hybrid maize varieties approved by Guizhou Crops Variety Examination Committee from 2000 to 2012 were statistically analyzed to provide a rderence for breeding of new hybrid maize varieties in Guizhou. The results showed that ： （i） The yield of hybrid maize varieties increased from 500kg/667m2 to over 615 kg/667m2 gradually but the yield increment range be- tween the approved varieties and CK varieties reduced step by step, which indicates that the yield stability of CK ＇varieties is enhanced gradually; （ii）The gennplasm basis of hybrid maize varieties includes Suwan, PB, local germplasm resources. Reid germplasm. Suwan （PB germplasm） × improved Reid germplasm is one of maize heterotic pattenls and also the representative pattern for breeding of strese resistance and high yield in Guizhou.

关 键 词：玉米 杂交种 产量变化 种质基础 

分 类 号：S513[农业科学—作物学]