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1、中国水稻科学(ChinJRiceSci),２０１６,３０(２):１９３－１９９http://www．ricesci．cnDOI:１０．１６８１９/j．１００１Ｇ７２１６．２０１６．５０３９１９３氮肥对粳稻籽粒腹白和心白发生及生化组成的影响习敏１,２林赵淼１赵艳岭１张新城１杨小雨１刘正辉１,∗李刚华１王绍华１丁艳锋１(１南京农业大学/农业部南方作物生理生态重点开放实验室,南京２１００９５;２安徽省农业科学院水稻研究所合肥２３００３１;∗通讯联系人,EＧmail:liuzh＠njau．edu．cn)EffectsofNitrogen
2、FertilizerApplicationontheFormationofWhiteＧbellyandWhiteＧcoreasWellasBiochemicalCompositionofjaponicaRiceGrainsXIMin１,２,LINZhaoＧmiao１,ZHAOYanＧling１,ZHANGXinＧcheng１,YANGXiaoＧyu１,LIUZhengＧhui１,∗,LIGangＧ１,W１１huaANGShaoＧhua,DINGYanＧfeng(１NanjingAgriculturalUniversity/Key
3、LaboratoryofCropPhysiologyandEcologyinSouthernChina,MinistryofAgriculture,Nanjing２１００９５,China;２RiceResearchInstitute,AnhuiAcademyofAgriculturalSciences,Hefei２３００３１,China;∗Correspondingauthor,EＧmail:liuzh＠njaue．duc．n)XIMin,LINZhaomiao,ZHAOYanling,etal．Effectsofnitroge
4、nfertilizerapplicationontheformationofwhiteＧbellyandwhiteＧcoreaswellasbiochemicalcompositionofjaponicaricegrains．ChinJRiceSci,２０１６,３０(２):１９３Ｇ１９９．Abstract:ThewhiteＧbellyandwhiteＧcoremutants(WBRKandWCRK)fromWuyujing３wereusedtoclarifytheeffectsofnitrogenapplicationlevel
5、s(zeronitrogenapplication,CK;theratioofbasalNfertilizertotopdressingNfertrＧlizerforpanicleinitiation１∶１,N５Ｇ５;NfertilizerasbasalfertilizerN１０Ｇ０)ontheoccurrenceofwhiteＧbellyandwhiteＧcoregrainsaswellasgrainchemicalcomponents．TheresultsshowedthatNitrogenapplicationsignif
6、icantlyincreasedthepercentagesofwhiteＧbellyandwhiteＧcoregrainsandthelatterwasmoresusceptibletonitrogenapplication．AverＧagedacrossnitrogentreatments,WBRKproducedgrainswithsimilarchemicalcompositionincomparisonwiththoseofcontrol．Bycontrast,WCRKhadhighertotalstarch,amyl
7、oseandamylopectincontents．Also,nitrogenapplicationimＧprovedricemillingquality．ComparedtoCK,ricegrainsfromWBRKshowedsignificantlyelevatedcontentsofstorageproteinsexceptforalbuminasnitrogentopdressingrateincreased,whilericegrainsfromWCRKcontainedsignificantlyhigherleve
8、lsofproteinwithnosignificantchangesinproteincompositions．Nitrogentopdressingincreasedthecontentsofthemajorityofthe１７aminoacids,butd
