不同密度下玉米掖478衍生系产量相关性状的配合力分析  

Analyzing Combining Ability of Yield-Related Traits in Maize Ye478-Derived Lines under Different Planting Densities

作　　者：杨泽兵 谭家颖 王浩 汪程 侯宪斌 柏光晓 易强 刘应红[3] YANG Ze-bing;TAN Jia-ying;WANG Hao;WANG Cheng;HOU Xian-bin;BAI Guang-xiao;YI Qiang;LIU Ying-hong(College of Agriculture,Guizhou University,Guiyang 550025;College of Agriculture and Food Engineering,Baise University,Baise 533000;Maize Research Institute,Sichuan Agricultural University,Chengdu 511130,China)

机构地区：[1]贵州大学农学院,贵阳550025 [2]百色学院农业与食品工程学院,广西百色533000 [3]四川农业大学玉米研究所,成都511130

出　　处：《玉米科学》2024年第1期33-38,共6页Journal of Maize Sciences

基　　金：贵州大学引进人才科研基金[贵大人基合字(2020)1号];国家自然科学基金(32072071;32260470);贵州大学培育基金项目[贵大培育(2020)71号]、贵州大学大学生创新基金[贵大SRT字(2021)249号]。

摘　　要：用掖478衍生系K22、沈5003、U8112、早48和郑58为被测系,以Mo17、齐319、丹340和昌7-2为测验系,基于NCII设计得到20个杂交组合,在高、低种植密度下对产量相关性状进行配合力分析。结果表明,掖478衍生系及其杂交种的产量性状受密度、基因型等影响。早48和郑58的4个以上穗部性状的一般配合力在高密度下效应值较高,且高于低密度下的效应值。早48×丹340和郑58×齐319在高密度下单穗粒重最高且多数性状特殊配合力均为正效应。早48和郑58在高密度下综合表现较其他衍生系更好,在该区域耐密高产育种中可以重点利用。To effectively utilize the density-tolerant backbone parent Ye478-related lines in the low planting density regions of Southwest China,20 hybrids were obtained based on North Carolina II(NCII)design using the maize foundation parents Ye478-related lines,K22,Shen5003,U8112,Zao48,and Zheng58,crossed with Mo17,Qi319,Dan340,Chang7-2.Combining ability and other analyses were performed on the yield-related traits in Ye478-derived inbred lines and their corresponding hybrids under low and high planting densities across two envi⁃ronments.The results indicated that yield-related traits in the Ye478-derived lines and those hybrids were affected by planting density,genotype,and other factors.Zao48 and Zheng58 had positive effects on general combining abili⁃ty for at least four traits under high density and had higher GCA values than those under low density.Specific com⁃bining ability of yield-related traits for the combinations Zao48×Dan340 and Zheng58×Qi319 with the highest grain weight per ear under high-density stress were positive.Zao48 and Zheng58 showed better overall performance un⁃der high density compared to other derived lines,which should be mainly used in breeding for high density toler⁃ance and high yield.

关 键 词：玉米 掖478衍生系 产量相关性状 耐密性 配合力分析 

分 类 号：S513.035.1[农业科学—作物学]