玉米自交系表型性状与产量的灰色关联分析  

Grey Relational Analysis between Phenotypic Traits and Yield of Maize Inbred Lines

作　　者：李伟忠[1] 安英辉[1] 许崇香[1] 孙梅[1] 闵丽[1] 姜森[1] 陈庆山[2] 胡国华[1,2] 

机构地区：[1]黑龙江省农垦科研育种中心,黑龙江哈尔滨150036 [2]东北农业大学,黑龙江哈尔滨150030

出　　处：《作物杂志》2012年第5期105-108,共4页Crops

基　　金：公益性行业(农业)科研专项项目(200903003);引进国际先进农业科学技术计划(948计划)项目(2006G01)

摘　　要：以257份玉米自交系为材料,采用灰色关联分析方法,对影响玉米自交系产量(单株粒重)的主要表型性状进行研究。结果表明:关联序排在前三位的是全生育期、散粉期与吐丝期,生育期是影响玉米自交系单株粒重最重要的因素,其他性状与单株粒重的密切程度依次减小;与产量相关的主要性状中,关联序排在前三位的是穗位、穗长、百粒重;总体排序为全生育期>散粉期>吐丝期>穗位>穗长>百粒重>全株叶数>株高>穗位叶面积>穗粗>出苗期>行粒数>行数;高产玉米自交系选育目标:尽量延长生育期,提高穗长及百粒重,其他性状适中,协调相关因素,提高产量。本试验利用大量有代表性的玉米自交系,明确了主要农艺性状对产量的贡献,为选育高产玉米自交系提供了理论参考依据。257 maize inbred lines were used to research the phenotypic traits which influence the yield of maize in- bred lines by grey associational relevant analysis. The results showed that ： the top three traits were growth duration, pollination and silking. Growth duration was the most important trait that influenced grain weight of maize inbred lines. The relevant degree of other traits decreased in order. The top three were ear height 〉 ear length 〉 100-seed weight, and the total order were growth duration 〉 pollination 〉 silking 〉 ear height 〉 ear lengt 〉 100-seed weight 〉 leaf number per plant 〉 plant height 〉 area of ear leaf 〉 ear diameter 〉 seedling 〉 grain number per row and row number per ear. The object of high yield maize inbred line were ： extending the growth duration, improving the ear length and 100-seed weight. Other traits should be considered moderately and coordinate related traits to improve the yield. In this study, a large number of representative maize inbred lines were used to identify the influence of major agronomic traits to yield, which provided the theoretical reference for high yield maize breeding.

关 键 词：玉米自交系 表型性状 产量 灰色关联度 

分 类 号：S513[农业科学—作物学]