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1、棉花学报CottonScience2015袁27渊2冤院126―134持续高温干旱年份陆地棉农艺和产量性状的遗传效应分析1112111111*裴小雨袁周晓箭袁马雄风袁田桂平袁王海风袁孟清芹袁张文生袁周克海袁刘艳改袁杨代刚渊1.中国农业科学院棉花研究所/棉花生物学国家重点实验室袁河南安阳455000曰2.湖北省潜江市农业局袁湖北潜江433100冤摘要院本文采用NCⅡ交配设计方法袁以9个陆地棉品种渊系冤配置16个杂交组合袁利用加性要显性与环境互作的遗传模型渊ADE模型冤袁分析亲本和F1在2013年持续高温干旱条件下望江尧九江2个环境下的农艺和产量性状袁估算了各项遗传方差分量袁分析了性
2、状间各项遗传效应的相关性和各性状的杂种优势遥结果表明袁农艺和产量性状易受环境条件影响袁子棉产量尧皮棉产量尧单株铃数和铃重的遗传主要受显性效应控制袁衣分同时受加性和显性效应控制袁子指主要受加性效应控制遥遗传相关分析表明袁子棉产量和皮棉产量与铃重和衣分呈显性正相关曰铃重与衣分呈显性正相关袁衣分与子指的加性和显性均为负相关遥杂种优势分析表明袁中棉所63的铃重尧衣分尧子指尧子棉产量和皮棉产量的群体平均优势达极显著水平袁其皮棉产量的杂种优势可以利用至F3遥关键词院持续高温干旱曰陆地棉曰农艺与产量性状曰遗传效应曰遗传相关曰杂种优势中图分类号院S562.033文献标志码院A文章编号院1002-
3、7807(2015)02-0126-09院10.11963/issn.1002-7807.201502005111211PeiXiaoyu,ZhouXiaojian,MaXiongfeng,TianGuiping,WangHaifeng,MengQingqin,ZhangWen-1111*sheng,ZhouKehai,LiuYangai,YangDaigang(1.45500,;2.433100,)Heterosisisprevalentinnature.Inthisstudy,theNCIImatingdesignapproach,withnineuplandcottonva
4、rieties(strains)forming12crosscombinations,wasusedtoanalyzethemainagronomicandyieldtraitsintwoecologicalenvironmentsin2013withcontinuoushightemperatureanddroughtbythegeneticmodelofadditive-dominantwithenvironmentalinteractioneffects(ADEmodel).Geneticvariancecomponentswereestimated,geneticcorr
5、elationsbetweenalltraitswereanalyzedandheterosisofF1andF2werepredicted.Theresultsindicatedthatagronomicandyieldtraitswereaffectedbyenvironmentalcondi-tions.Seedcottonyield,lintyield,bollnumberperplantandbollweightwerecontrolledbydominanteffects;lintpercentwascontrolledbyadditiveanddominanteff
6、ects;andseedindexwascontrolledbyadditiveeffects.Geneticcorrelationanalysisshowedthatseedcottonyieldandlintyieldhadpositivedominantcorrelationswithbollweightandlintpercent;bollweighthadapositivedominantcorrelationwithlintpercent,whilelintpercenthadanegativedominantcorrelationandnegativeadditiv
7、ecorrelationwithseedindex.Heterosisanalysisindicatedthatmeanheterosisofbollweight,lintpercentage,seedindex,seedcot-tonyieldandlintyieldofCCRI63reachedextremelysignificantlevels,andtheF3ofthisvarietyhadstrongheterosisforlintyield.continuoushig
