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吴光祥200830010616指导教师FORMTEXT
年海教授学院名称FORMTEXT
农学院专业名称FORMTEXT
农学（信息技术方向）论文提交日期2012年5月7日论文答辩日期2012年4月27日摘要采用广东、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,Jiangxihave