PAGEII本科毕业论文南方夏大豆生育期结构与产量性状关系的研究摘要采用广东、广西、湖南、江西、四川共50份受试材料，在常规(3次重复，3行区，行长2.5m，株距15cm,行距50cm）栽培条件下，对生育期结构与产量性状的相关性进行了研究。结果表明:（1）单株粒重、单株粒数最高的是晚熟材料，百粒重最高的是早熟材料；早、中、晚熟材料的花期占全生育期比例与单株粒数均呈正相关；早、中、晚熟材料的生殖生长期与百粒重均呈正相关。（2）各省区的材料间全生育期和单株粒重的差异不达到显著，其它性状有显著差异，这说明地区来源对大豆性状表现有一定影响；广东、广西、江西材料花期占全生育期比例与单株粒数的呈正相关，与百粒重呈负相关。湖南、四川材料的花期占生育期比例与百粒重、单株粒重、单株粒数均呈正相关。（3）总体来说，50份材料的花期与单株粒数呈极显著正相关（r=0.412），生殖生长期和单株粒重呈极显著正相关（r=0.365）。关键词大豆生育期结构产量RelationshipofGrowStageStructureandYieldofEstivalSoybeansfromSouthChinaWuGuangxiang（CollegeofAgriculture,SouthChinaAgriculturalUniversity,Guangzhou,510642,China）Abstract:50soybeanmaterialsofthefiveprovincesareused:Guangdong,Guangxi,Hunan,Jiangxi,Sichuan.Intheconventionalcultivationconditions(3repetitions,threelinesforeachsubregion,2.5mforeachline,plantspacing15cm,linespacing50cm).Theobjectiveofthisstudyistoanalyzethecorrelationbetweenthestructureofthegrowthperiodandcharacterofyield.Theresultsshowthat:(1)Thegrainweightperplantoflatematuritymaterialandgrainnumberperplantoflatematuritymaterialarethemostlarge;Thefloweringperiodofallgrowthperiodproportionoftheearlymaturitymaterial,andthefloweringperiodofallgrowthperiodproportionofthemiddlematuritymaterial,andthefloweringperiodofallgrowthperiodproportionoflatematuritymaterialallhavepositivecorrelationwithgrainnumberperplant;Thereproductivegrowthperiodoftheearlymaturitymaterial,andthereproductivegrowthperiodofthemiddlematuritymaterial,andthereproductivegrowthperiodoflatematuritymaterialhavepositivecorrelationwithgrainweightper100grains.(2)Thereisnosignificanceofdifferenceofallgrowthperiodandgrainweightperplantofallgroupmaterialofallprovince,buttherearesignificanceofdifferencebetweenothercharacter.Itindicatethatregionalsourcehasinfluenceonexpressionofcharacter;ThefloweringperiodofallgrowthperiodproportionofmaterialsofGuangdong,Guangxi,Jiangxihavepositivecorrelationwithgrainamountperplant,andthemhavenegativecorrelationwithgrainweightper100grains.(3)Onthewhole，ther