不同玉米品种在晋北地区的适应性评价  

Adaptability Evaluation of Maize Varieties in Northern Shanxi

作　　者：李洪[1] 王瑞军[1] 王彧超 杨志斌[1] 李联梅[1] Li Hong;Wang Ruijun;Wang Yuchao;Yang Zhibin;Li Lianmei(Institute of the Crops in High Latitude＆Cold Climate Area,Shanxi Academy of Agricultural Sciences.Datong Shanxi 03700)

机构地区：[1]山西省农业科学院高寒区作物研究所,山西大同037000

出　　处：《中国农学通报》2018年第20期15-20,共6页Chinese Agricultural Science Bulletin

基　　金：山西省农业科技成果转化和示范推广项目"玉米套种蔬菜简约化栽培技术示范"(2018CGZH-14);山西省农业科学院农业科技创新研究课题"高寒区鲜食玉米复播秋白菜高效简化栽培技术研究"(YCX2018423)

摘　　要：为了客观准确地评价11个不同玉米品种在晋北地区的适应性,本试验比较了参试品种的生育期、株高、穗长等生物学性状,并运用主成分分析方法对主要农艺性状进行了分析。结果显示:参试材料的综合性状在晋北区的适应性均较好,生育期为127~130天;除秃尖长与籽粒产量呈负相关外,穗长、行粒数、穗行数、千粒重、出籽率和产量间呈正相关,其中穗长、行粒数与籽粒产量的正相关系数分别为0.669、0.648,均达到显著水平(P<0.05);前4个主成分累积贡献率达87.062%,说明基本代表了原始因子的大部分遗传信息;前4个主成分分别是植株高度构成因子、果穗构成因子、籽粒数量构成因子和生育期因子;根据各个品种的综合得分,‘诚信1611’的综合性状表现突出,尤其在植株高度构成因子、果穗构成因子中得分最高,为供试材料中最适宜在晋北地区种植的品种。To accurately evaluate the adaptability of 11 maize varieties in northern Shanxi, major agronomictraits such as growth period, plant height and spike length are compared. And the principal component analysis（PCA） is conducted on the biological traits. The results showed that the adaptability of the test materials wereall better in the region, the growth period was 127-130 days. Except the negative correlation between thebaldness length and yield, there were all positive correlations between the spike length, grain number per line,ear row number, 1000-grain weight, the rate of seed and yield. The correlation coefficient between the spikelength, grain number per line and the grain yield was 0.669 and 0.648, respectively, reached significant level（P〈0.05）. The cumulative contribution rate of the first four factors was 87.062%, representing most of thegenetic information of the original factors. The first four factors were the composition factor of plant height, thecomposition factor of ear, composition factor of grain number and growth factor. According to thecomprehensive scores of all varieties, the score of＂Integrity 1611＂is the highest, especially in the compositionfactor of plant height and the composition factor of ear, indicating that it is the most suitable variety in northernShanxi.

关 键 词：玉米 适应性 农艺性状 相关分析 主成分分析 

分 类 号：S513[农业科学—作物学]