欢迎来到天天文库
浏览记录
ID:39135671
大小:2.84 MB
页数:60页
时间:2019-06-25
《盐胁迫对小麦代换系幼苗的影响与染色体效应分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据6D、CS、Synthetic6x耐盐性较弱。关键词:小麦代换系:盐胁迫;染色体效应;生理指标;幼苗万方数据PhysiologicalandChromosomalEffectsofSaltStressonChromosomeSubstitutionofWheatSeedlingsAuthor:JingJiao-jiaoMajor.BotanySupervisor:ProfessorBaiZhi·)ringAbstractSoilsalinizationisoneofthemostimportantfactsinfluencinggloba
2、lagricultureandcropproduction.Asweknowwheatisanimportantcropintheworld,whichismoderatelysalt-tolerantandtheyieldofwheatispositivelysignificantcorrelatedwiththesaltcontent.Inordertofulfilltheneedofworld’Sgrowingpopulationforfood,itbecomestheresearchfocusofdomesticandforeignexp
3、ertstostudytheeffectofwheatsalttoleranceandtobreedhigh-resistedspecies.Thewheatsubstitutionlinesarethepreciousgermplasmresourcesofgeneticresearch.ChinaSpring(cs)-Synthetic6xchromosomesubstitutionlinesaregeneratedbythe21chromosomeofdonorvarietiesSynthetic6xintotherecipientvari
4、etyChineseSpring.TherearegreatgeneticdifferencesbetweenmaleSynthetic6x,andfemaleChineseSpringbecauseofmaleSynthetic6xcontainingwealthyresistancegeneandrichgeneticdiversity.Inordertostudytheeffectandchromosomalcontrolofsaltstressinwheatseedlings,wheatsubstitutionlinesbetweenCh
5、ineseSpringandSynthetic6xwereculturedinHoagland’Ssolution.Twotreatmentsincludingcontrolgroup(0mmolL叫NaCl)andsalttreatmentgroup(150mmol’L叫NaCI)werecarriedoutattwo-leafstageofseeding..Physiologicalandbiochemicalindexesweremeasuredundercontrolledconditionandsalttreatmentofseedli
6、ngsatfour-leafstage.Itwouldprovideatheoreticalbasisforthebreedingandgeneticimprovementofsalt-tolerantgenotypes.Theresultswereasfollowing:1.Theresultsshowedthatsaltstessresultinaccumulationofsolubleproteincontentandsolublesugarcontent,prolinecontent,Na+,K十content,SOD,PODactivi
7、tiesandreductionofspecificleafweigh,chlorophyllcontent,carotenoidcontent,Photosyntheticrate,transpirationrate,MDAcontent.Thegenesincreasimgsolubleproteincontentmightbeexiston1A,2A,4A,6Achromosomesandthegenespromotingsolublesugarcontentmightbelocatedon6A,7A,7Dchromosomeaswella
8、sthegenespromotingprolinecontentmightbelocatedon7A,6DchromosomeofSyn
此文档下载收益归作者所有