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1、中国水稻科学(ChinJRiceSci),２０１５,２９(４):３９０－３９８http://www．ricesci．cn３９０DOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１５．０４．０８影响水稻遗传群体株系氮素高效吸收的主要根系性状陈琛１羊彬１朱正康１曹文雅１罗刚１周娟１王祥菊２于小凤１袁秋梅１仲军１王熠１黄建晔１王余龙１董桂春１,∗(１扬州大学江苏省作物遗传生理国家重点实验室/粮食作物现代产业技术协同创新中心/农业部长江中下游作物生理生态与栽培重点开放实验室,江苏扬州２２５００９;２扬州职业大学,江苏扬州２２５００９;∗通
2、讯联系人,EＧmail:gcdong＠yzu．edu．cn)RootTraitsAffectingNitrogenEfficientAbsorptioninRiceGeneticPopulationsCHENChen１,YANGBin１,ZHUZhengＧkang１,CAOWenＧya１,LUOGang１,ZHOUJuan１,WANGXiangＧju２,YUXiaoＧfeng１,YUANQiuＧmei１,ZHONGJun１,WANGYi１,HUANGJianＧye１,WANGYuＧlong１,DONGGuiＧchun１,∗(１KeyLabor
3、atoryofCropGeneticsandPhysiologyofJiangsuProvince,CollegeofAgriculture,YangzhouUniversity,Yangzhou２２５００９,China/CoＧinnovationCenterforModernProductionTechnologyofGrainCrops/KeyLaboratoryofCropPhysiology,EcologyandCultivationinMiddleandLowReachesofYangtzeRiverofMinistryofAgri
4、culture,Yangzhou２２５００９,Jiangsu;２YangzhouPolytechnicCollege,Yangzhou２２５００９,China;∗Correspondingauthor,EＧmail:gcdong＠yzue．duc．n)CHENChen,YANGBin,ZHUZhengkang,etal．Roottraitsaffectingnitrogenefficientabsorptioninricegeneticpopulations．ChinJRiceSci,２０１５,２９(４):３９０Ｇ３９８．Abstract:T
5、oinvestigatetherelationshipbetweenroottraitsandnitrogenaccumulationinricecultivars,atotalof１１４chromosomesinglesegmentsubstitutionlines(CSSSLs)weresolutionＧculturedin２０１０and２０１１．Onthebasisofnitrogenaccumulationperplantandyieldperplantatmaturity,theCSSSLswereclusteredbyMinSSw
6、methodintosixtypes(namelyA,B,C,D,EandFbynitrogenaccumulationperplantfromlowtohigh)．Theresultsshowsthat:１)TherewasasignificantdifferenceamongalltestedlinesinNaccumulationperplant,thevariationrangedfrom０．３２gto０．９１g．ThehighestNaccumulationwas２．５８foldsofthelowest．２)BothNaccumul
7、ationandnitrogenuseefficiencyforgrainproductionwereimportantcontributorstoyieldformation,buttheformerexhibitedhighercontribution．Withhighernitrogenaccumulation,grainyieldtendedtoincrease,butnitrogenaccumulationtypesandgrainyieldtypeswerenotalwaysassociated．３)Highernitrogena
8、ccumulationisanimportantbasisofhigheryield,butyieldwasalsoaffectedbyotherfactors．４
