板栗分子标记辅助育种的配套育苗技术研究

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1、板栗分子标记辅助育种的配套育苗技术研究AgriculturalScience&Technology.2011,12(5):666—669673cpvright@2011,InformationI…nstituteof'HA_AS..Allrightsresve.rvved.AgriculturalBasicScienceandTechnologySupportingNursingTechnologyfortheMarker-?AssistedSelectionofCastaneamollissimaBlumeuuTing,SUS

2、hu?chai,WANGQian,LIUWan-ping,WANGJingKeyLaboratoryforForestSilvicultureandConservationoftheMinistryofEducation,BeijingForestryUniversity,Beijing100083Abstract『0hiective]TheaimwastostudythesupportingraisingtechnologyofCastaneamollissimaBlumemolecularmarker?assistedselec-t

3、iontoreducethecostandtimeforchestnutbreeding.1Metllod1Tofindthebestcu~ingmethod.10treatmentsweredesignedaccordingtotransversediameterandverticaldiameterofthechestnutincludingdifferentcu~ingratlosin1/2.1/3.1/4anddifferentdirectionsaboutcrosscu~ing.verticaIcu~ing.bevefcutt

4、ingandtwoside-cu~ing.Thegerminationrate,seedlingsurvivalrateandmorphologicalindicatorsofthetreat-mentsweremeasured:significantdifferenceamongthemwasalsoanalyzed.1Result}1/3bevelcuttingwasthebest,whichnotonlycouldgivehighgerminationrateandsurvivaIrate.butalsocouldguarante

5、ehighquailtyofnurserystock.whichdidnotgrowsodifferentlywiththeuntreatedseedlings.『Conclusion1Thiswaycannotonlyreducetoomuchcostandtimeforseedlingbreeding.bulalsopromotethegerminationofchest-nutinadvance,whichcoulddomuchgoodtoproduction.KeywordsCas￡aneamollissimaBlume:Mar

6、ker-assistedselection:SeedlingraisingChestnut(CastaneamollissimaBlume)isoneoftheFourEconomicDriedFruitsinChina.butalsooneofthetradi—tionaIdriedfruitearningforeignexchangethroughexports.Becauseofitsrichnutrientsanduniquetaste.itispopularindomesticandforeignmarkets.However

7、.thereisstillsomeproblemsexistingincurrentchestnutbreedingwork:(1thebreedingcycleistoolong.7—1OyearsorevenlongertimearerequiredgenerallyfrOmtheoriginalselectiontoapplicationandpopularization:IagerfarmlandareaisneededforthetrM—aIandcomplicatedchestnutbreeding:(about9O%oft

8、hevarietiesareselectedbybreedingofseedlingsinpractice,andinsuchsinglebreedingmeans,mutationbreeding,pro