油菜耐鹽性的基因型差異.pdf

1、浙江大學(xué)碩士學(xué)位論文油菜耐鹽性的基因型差異姓名：李源龍申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：作物學(xué)指導(dǎo)教師：蔣立希20070501浙扛大學(xué)碩士學(xué)位論文油菜耐鹽性的基因型差異(李源龍2007)AbstractThefastexpansionofindustryandtheexhaustedutilizationoffertilesoilinthedevelopingcountries，likeChinalimitedtheincreaseofcropp

2、roductionandthusgaverisetotheneedinreclaimingsalinecoastalareas，orarid，semiaridlands，wherehi【ghamountsofsolublesaltsexistinthesoilsAsoneofthemostimportantpioneercrops，Brassicaspeciesalwayshave900dperformanceonnewreclaime

3、dlandsInthisstudylggenotypeswithdifferentecooriginswereselectedasexperimentalmaterialsandfollowingparametersweremeasuredteflectthedegreethatrapeseedwereaffectedbythesaltStressThesearegerminationrate，rootlengthandsprouthe

4、ighta：tgerminationstage，beightof5—7leavesseedlings，theratiooffreshbiomesstodrymateringreenleavesthecontentofchlorophyllandcarotenoidinleaves，andthechangesoftheactivitiesoffouranfioxidantenzymes，likesuperoxidedismutaso(SO

5、DXperoxidasa(POD)，catalase(c∽，andescorbateperoxidase(APXlOurexperimentalresultsindicatedtlat●TherewassignificantgeneticvariationforsalttolerancewithinasameBrassicaspeciesIngeneralamongthethreespeciesweinvestigated，theint

6、raspacificvariationamongBrassiearapsW3StheIowest，followedbyBrasMcajunceaandBrassicanapus●AmphidiploidsBrasiacaspecies。suchasBrassicarla妒lz$orBrassicajunceadidnothaveobviousadvantageinsalttoleranceincomparisontodiploidspe

7、cieslikeBrassicaraps●SpeciesresponddifferentlyatdifferentgrowthstagestosalinegrowthmediumandBrassicaspeciesaregenerallymoresensitiveatgerminationthanat57leavesseedlingstageAlthoughthereWasnosignificantrelationshipbetween

8、salttolerancevariationsthatwereobservedatgerminationorattheseedlingstage，someunderlyingrulesfanalsobefoundTakeBrassicanapusspeciesasanexample，throughtheparameterswemeasured，wefoundthatBn2appearedtohavegreatersalttoleranc

9、ethanBnSatbothoftwostagesinvestigated。InourstudyWealsotriedt0findparametersthatcouldbebetterusedtodistinguishthevariationofsalttoleranceamongdifferentspeciesandcultivaminBrassicaoilseedsThrowIghtheresearch，wesuggestedane

10、fficientmethod，namelyGIMSS，whichcouldbeusedtocalculateforaquickevaluationoflargescalescreeningprojectsforgeneticmaterialsor／nutantsthataretoleranttosaltstressinBrassicaoilseedsKeywords：Brassicaoilseeds；geneticvariation；a