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1、中国水稻科学(ChinJRiceSci),２０１５,２９(１):１０６－１１０http://www．ricesci．cn１０６DOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１５．０１．０１３田间高温严重降低杂交水稻制种的异交结实闫浩亮１,２潘幸福３陈建珍１,２姚仪敏１,２卢碧林１,２田小海１,２,∗(１长江大学农学院,湖北荆州４３４０２５;２主要粮作物产业化湖北省协同创新中心,湖北荆州４３４０２５;３湖北荃银高科种业有限公司,湖北荆州４３４０２５;∗通讯联系人,EＧmail:xiaohait＠sina．com)OutＧCrossin
2、gSeedSettingRateWasSeriouslyReducedByHighＧTemperatureinHybridRiceSeedProductionUnderFieldConditionsYANHaoＧliang１,２,PANXingＧfu３,CHENJianＧzhen１,２,YAOYiＧmin１,２,LUBiＧlin１,２,TIANXiaoＧhai１,２,∗(１AgriculturalCollege,YangtzeUniversity,Jingzhou４３４０２５,China;２HubeiCollaborativeInnovationC
3、enterforGrainIndustry,Jiangzhou４３４０２５,China;３HubeiAllwinHigtＧTechSeedCo．Ltd．,Jingzhou４３４０２５,China;∗Correspondingauthor,EＧmail:xiaohait＠sinac．om)YANHaoliang,PANXingfu,CHENJianzhen,etal．OutＧcrossingseedsettingratewasseriouslyreducedbyhighＧtemperatureinhybridriceseedproductionund
4、erfieldconditions．ChinJRiceSci,２０１５,２９(１):１０６Ｇ１１０．Abstract:TheexperimentwithdifferentseedingdatewasconductedatthehybridriceseedproductionsiteinYanchengCitytoexploretheimpactofweatherconditionsattheheadingstageonseedsettingratesforfemaleparents．Exposedtoconsecutivehightemperatu
5、relastingfor１１daysinthemidＧtoＧendofAugust２０１３,inYancheng,beforeblooming,seedsettingrateofthefemaleparentin２０１３wassignificantlyreducedby６．８９percentonaveragecomparedwiththatin２０１１．MeanwhiletherehasbeengreatdifferencesinhighＧtemperaturesensitivityamongvariouscombinations,withXinl
6、iangyouxiang４andXinliangyou２２３ＧgaibeingmoreinsensitivethanXinliangyou２２３．TheoutＧcrossingratesofallthefemaleparentsshowedasignificantnegativecorrelationwithhightemperaturein２０１３,butnocorrelationin２０１１incomparison．Regressionanalysisshowedthatwhenthe１０daveragetemperaturebeforeand
7、afterheadingstageincreasedupto２８．０℃,theoutＧcrossingrateofthefemaleparentsbegantofall,andwhenitcameto２９．０℃theoutＧcrossingratesignificantlyreduced．Keywords:hybridrice;seedproduction;hightemperature;seedsettingrate闫浩亮,潘幸福,陈建珍,等．田间高温严重降低杂交水稻制种的异交结实．中国水稻科学,２０１５,２９(１):１０６Ｇ１１０．摘要:在江苏
8、盐城制种基地设置长期多品种分期播种试验,旨在探讨不同开花结实前后田间气象条件对结实的影响;２０１３年盐城在８月中下旬发生连
