资源描述：
《灌浆结实期冷水胁迫对寒地粳稻籽粒淀粉积累及相关酶活性的影响》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、中国水稻科学(ChinJRiceSci),２０１６,３０(１):６２－７４http://www．ricesci．cn６２DOI:１０．１６８１９/j．１００１Ｇ７２１６．２０１６．５０９９灌浆结实期冷水胁迫对寒地粳稻籽粒淀粉积累及相关酶活性的影响夏楠赵宏伟∗吕艳超赵振东邹德堂刘化龙王敬国贾琰(东北农业大学农学院/水稻研究所,哈尔滨１５００３０;∗通讯联系人,EＧmail:hongweizhao＠１６３．com)EffectofColdＧwaterStressatGrainＧfillingStageonStarchAccumulationandRelatedEnzymeActiviti
2、esinGrainsofjaponicaRiceinColdＧregionXIANan,ZHAOHongＧwei∗,LVYanＧchao,ZHAOZhenＧdong,ZOUDeＧtang,LIUHuaＧlong,WANGJingＧguo,JIAYan(RiceResearchInstitute/CollegeofAgronomy,NortheastAgriculturalUniversity,Harbin１５００３０,China;∗Correspondingauthor,EＧmail:hongweizhao＠１６３c．om)XIANan,ZHAOHongwei,LVYanchao,e
3、tal．EffectofcoldＧwaterstressatgrainＧfillingstageonstarchaccumulationandrelatedenzymeactivitiesingrainsofjaponicariceincoldＧregion．ChinJRiceSci,２０１６,３０(１):６２Ｇ７４．Abstract:AfieldexperimentwasconductedtorevealtheinfluenceofcoldＧwaterstress(１７℃,lasting３,６,９,１２,１５d)ongrainstarchsynthesisandaccumulati
4、on,yieldcomponentsofjaponicarice(Dongnong４２８,Songjing１０andLongdao７)incoldＧregionduringgrainＧfillingstage,aswellastherelationshipsbetweenthechangesinkeyenzymesactivitiesrelatedtostarchsynthesisandstarchcompositionundercoldＧwaterstress．Theresultsshowedthatcomparedwiththecontrol,solublestarchsynth
5、ase(SSS)activityandstarchbranchingenzyme(SBE)activitydecreased,aswellasthetotalstarchcontentsandamylopectincontent,whiletheamylosecontentincreasedunder１７℃coldＧwaterstressduringgrainＧfillingstage．Accordingtothecorrelationanalysis,theactivitiesofsolublestarchsynthase(SSS)andstarchbranchingenzyme(
6、SBE)weresignificantlycorrelatedwithgrainstarchaccumulation,playinganequallyimportantroleinthechangesofstarchanditscomponentcontents．Meanwhile,thegrainnumberperpanicle,thousandseedweightandseedsettingrateweresignificantlyreducedduringgrainＧfillingstage．Theamplitudeofvariationforeveryindicatorinc
7、reasedgraduallywithlengtheningcoldＧwatertreatmenttime．TheindicatorsrelatedtotheyieldcomponentsofjaponicariceincoldＧregionvariedwithcoldＧwaterstressdurationandcanbeusedfortheidentificationofcoldresistance．Accordingtotheindexesunder
