玉米茎秆耐穿刺强度的倒伏遗传研究.pdf

作物学报ACTAAGRONOMICASINICA2009,35(11):2133−2138http://www.chinacrops.org/zwxb/
ISSN0496-3490;CODENTSHPA9E-mail:[e-mail]

DOI:10.3724/SP.J.1006.2009.02133

玉米茎秆耐穿刺强度的倒伏遗传研究

1,21231,*
丰光刘志芳李妍妍邢锦丰黄长玲

1中国农业科学院作物科学研究所,北京100081;2辽宁省丹东农业科学院,辽宁凤城118109;3北京市农林科学院玉米研究中心,北京
100097

摘要:以沈单16和郑单958玉米单交种构成的六世代群体为材料,利用自行设计的玉米茎秆穿刺仪,对玉米地上

第三茎节中部椭圆形短轴垂直于茎秆进行穿刺,测定玉米茎秆穿刺阻力。通过P1、P2、F1、F2、BC1和BC26个世代
联合分析法,以玉米茎秆穿刺阻力为性状,研究控制玉米茎秆倒伏性的基因遗传分离规律。结果表明,该性状在两个

单交种的F2分离世代群体均呈双峰分布,BC1和BC2群体分离世代呈多峰分布,说明玉米茎秆耐穿刺性遗传为多基因
数量性状控制,且符合1对加-显主基因＋加-显-上位性多基因遗传模型(即D模型);主基因遗传力为34.5%~45.7%,
多基因遗传力41.6%~56.3%,两者在控制玉米茎秆耐穿刺遗传特性上都具有重要作用。这一研究结果为玉米抗倒伏
性状的有效选择提供方法和理论依据。
关键词:玉米;茎秆;穿刺;抗倒性;遗传

GeneticsofLodginginTolerancetoMaizeStemPuncture

FENGGuang1,2,LIUZhi-Fang1,LIYan-Yan2,XINGJin-Feng3,andHUANGChang-Ling1,*

1InstituteofCropSciences,ChineseAcademyofAgriculturalSciences,Beijing100081,China;2DandongAcademyofAgriculturalSciences,
LiaoningProvince,Fengcheng118109,China;3MaizeResearchCenter,BeijingAcademyofAgriculturalandForestrySciences,Beijing100097,
China

Abstract:SixgenerationsofmaizehybridsfromShendan16andZhengdan958wereusedinthestudy,thethirdinternodeof
maizestemabovegroundwaspuncturedatthemiddlepartalongwiththedirectionofellipticalandshortdiameterby

self-designedmaizestempunctureequipment.F1,F2,BC1,BC2,P1,andP2wereusedtostudytheinheritanceofmaizestemlodg-
ingwithjointanalysisofmultiplegenerations.Theresultswereasfollows:maizestempuncturetolerancetraitpresentedatwo

peakdistributionintheF2populationoftwohybrids,andamulti-peakdistributionintheBC1andBC2populations,indicatingthat
thetraitwasquantitativeinnatureandcontrolledbypolygene;theinheritanceofmaizestempuncturetolerancetraitfittedthe
modelofapairofadditive-dominance-epitasismajorgeneplusadditive-dominance-epitasispolygene(DModel);themajorgene
heritabilitywasbetween34.5%and45.7%;thepolygeneheritabilitywasbetween41.6%and56.3%.Theeffectsofmajorgene
andpolygeneheritabilitywereimportantonmaizestemlodginginheritance,andshouldbepaidmoreattentioninmai