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1、中国水稻科学(ChinJRiceSci),２０１４,２８(２):１７７－１８４http://www．ricesci．cnDOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１４．０２．００９１７７镉胁迫下籼稻和粳稻对镉的吸收、转移和分配研究龙小林向珣朝∗徐艳芳苏文丽康翠芳(西南科技大学植物分子遗传育种实验室,四川绵阳６２１０１０;∗通讯联系人,EＧmail:xiangxunchao＠swust．edu．cn)Absorption,TransferandDistributionofCdinindicaandja
2、ponicaRiceunderCdStressLONGXiaoＧlin,XIANGXunＧchao∗,XUYanＧfang,SUWenＧli,KANGCuiＧfang(LaboratoryofPlantMolecularGeneticsandBreeding,SouthwestUniversityofScienceandTechnology,Mianyang６２１０１０,China;∗Correspondingauthor,EＧmail:xiangxunchao＠swuste．duc．n)LONGXiaolin,XIA
3、NGXunchao,XUYanfang,etal．Absorption,transferanddistributionofCdinindicaandjaponicariceunderCdstress．ChinJRiceSci,２０１４,２８(２):１７７Ｇ１８４．Abstract:Apotexperimentwasconductedtostudytheabsorption,accumulation,distributionandtransferofcadmium(Cd)duringvariousgrowthstages
4、ofindica(CG１３２R)andjaponicarice(Jing９２５)underCdstress．ResultsshowedthatthetransferabilityofCdfromroottoabovegroundpartsduringthetilleringstagewasstrongerthanthatduringthematuritystage．WiththeincreasingconcentrationofexogenousCd,theCdcontentindifferentorgansofCG１
5、３２RandJing９２５increased．UnderlowsoilCdcontent,riceplantorgansenrichedCdmoreeasily．TheproportionofCddistributioninCG１３２RandJing９２５wasasfollows:root＞stem＞leaf＞brownrice＞ricehusk．TherootwastheprimaryorgansofthericeinCdabsorptionandaccumulation．TheCdcontentandaccumul
6、ationinbrownricewas５００％ashigherinCG１３２RthanthatinJing９２５．FurtherinvestigationshowedthattherewasasignificantdifferencebetweenCG１３２RandJing９２５inCdabsorption,accumulation,transferanddistribution．CG１３２Rhadstrongercapabilitiesofabsorption,accumulationandtransferofCdt
7、hanJing９２５．HigherconcentrationofCdinbrownriceofCG１３２RcontributedtomorestrongercapabilityinabsorptionandtransferofCdthanthatofJing９２５．Keywords:rice(OryzasativaL．);Cd;enrichmentfactor(EF);transferfactor(TF);growthduration龙小林,向珣朝,徐艳芳,等．镉胁迫下籼稻和粳稻对镉的吸收、转移和分配研究．中国水稻科学
8、,２０１４,２８(２):１７７Ｇ１８４．摘要:采用盆栽试验研究了镉胁迫下,籼稻(CG１３２R)和粳稻(粳９２５)在不同生育期对重金属镉的吸收和积累及其镉的分布和转移规律.结果表明,镉由水稻根部向地上部转移能力表现为分蘖期＞成熟期.镉胁迫下,CG１３２R和粳９２５各器官镉含量都随外源镉含量升高而上升,低镉条件下水稻各器官更容易富集镉
