不同生态环境对郑单958部分数量性状的影响研究  

Effects of Different Ecological Environments on Some Quantitative Characteristics of Zhengdan 958

作　　者：黄志城[1] 杨坤[2] 周海涛[3] 张浙峰[4] 李华勇[5] 唐浩[2] 陈海荣[1] 

机构地区：[1]上海市农业科学院农产品质量标准与检测技术研究所侬业部植物新品种测试上海分中心,上海201403 [2]农业部科技发展中心,北京100122 [3]吉林省农业科学院,吉林公主岭136100 [4]四川省农业科学院作物研究所,成都610066 [5]江苏省农业科学院粮食作物研究所,南京210014

出　　处：《玉米科学》2015年第5期49-55,共7页Journal of Maize Sciences

基　　金：上海市科技兴农重点攻关项目[沪农科攻字(2012)第2-1号];上海市科学技术委员会重点科技攻关项目(11391900400)

摘　　要：以郑单958为材料,对7个不同玉米DUS测试地点12个量测数量性状观测结果进行方差分析、主成分分析和双标图分析,探索同一玉米品种在不同地区进行DUS测试观测其量测数量性状表达变异的情况。结果表明,各个数量性状在年份间差异均不显著,地点间的差异明显高于年份间,部分性状达到极显著差异。雄穗最低位侧枝以上主轴长度和最高位侧枝以上主轴长度等2个性状最稳定,可被用作区分或描述品种的"可靠性状"。郑单958在高纬度地区具有表型值大、生育期长等特点,随着纬度降低各性状表型值有递减的趋势。抽穗期在杨凌、济南等中等纬度地区表现最短,即由营养生长转向生殖生长最早,叶片宽度最窄。抽穗期等稳定性较差但较重要的性状适宜安排在该品种所在生态区的测试点进行测试。In order to find the variation of quantitative characteristics of maize in different ecological environ-ments through DUS test, a hybrid maize variety Zhengdan958 was selected planted in 7 different locations, did vari-ance analysis, principal components analysis and biplot analysis based on 12 quantitative characteristics. The re-sults of variance analysis showed that there was no significant difference between years in these quantitative charac-teristics, and there was significant or extremely significant difference between locations. Characteristics Lol and Loh could be used as‘reliable trait＇in variety differentiation or description because of their high stability. Zhengdan958 got high values of these characteristics and long growth period in high latitude area. It seemed that the phenotypevalues became lower with the latitude decreasing. However, the lowest value of Toa, Tos and Wob existed in mid-lat-itude area such as YL and JN, which meant it started earlier from vegetative growth to reproductive growth. Aboveall, to those characteristics with low stability but high importance like Toa, Tos and so on, it would be better testedin the same ecological area of applicant variety to make sure a real expression.

关 键 词：玉米 生态环境 DUS测试 数量性状 

分 类 号：S513.037[农业科学—作物学]