不同品種薄皮甜瓜果實成熟和采后生理生化變化規(guī)律的研究.pdf

1、東北農業(yè)大學碩士學位論文不同品種薄皮甜瓜果實成熟和采后生理生化變化規(guī)律的研究姓名：陳雷申請學位級別：碩士專業(yè)：蔬菜學指導教師：秦智偉2000.5.1墮薹莖苧鏨莖：：：：芏：盆StudiesonPhysiologicalduringFruitRipeningofDifferentOrientalandBiochemicalChangesandPostharvestStorageSweetMelonVarietiesABSTRACTorie

2、ntalsweetmelon(Cucumismelo“ualmakuwaMakino)isanimportantgermplasmresourceofmeloninChinaItisliabletodecayduringstorageandtrans—portationbecausethedevelopmentandharvestperiodareshorterinhigh—temperatureandrainyseason，soiti

3、sbadlyinneedofthesolutiontothefresh—keepingofmelonSevengenotypeoforientalsweetmelonwereusedasexperimentmaterialstostudythephysiologicalandbiochemicalchangesinfruitripeningandpostharveststorage，andtodiscussthemechanismofe

4、thylenebiosynthesisandsofteningofmelonfruit，toscreenthestorablevarietiespreliminarilyandtodiscusstheinfluenceofharvesttimeonmelonstorageItcanbethetheoretiealbasistotheproductionandfreshkeepingofmelonandbreedingofstorable

5、varietiesTheresearchresultsareasfollows：Therewereevidentrespiratoryclimactericandthepeakofethyleneproductionduringripeningandstorageoforientalsweetmelon，thereforeitwashardtostoreRes—piratoryintensityandethylenecontentcou

6、ldbetheimportantindextoscreenstorablevarietieofmelonDuringstorageofRibentianbaofruit，theclimactericofrespiratoryandethyleneoccuredlaterandlastedshorterandtheclimactericpeakwaslower，sotherateofripeningandsenescencewasslow

7、erRibentianbaowasthestorablevarietyandcouldstoreforalongtime(15d)ThestoragecharactersofTedabaibao、No62、QitianNo1、9658andMaguaweren’tgood，sotheycouldstoreforashorttime(7d)ThestoragecharactersofLongtianNo1weresopoorthatitc

8、ouldnotusedforstorageDuringripeningandstorageoforientalsweetmelon，Ethylenecontentwasclose—lYrelatedwithACCcontent、ACCsynthaseactivityandACCoxidaseactivitv。Theenof，mousproductionofACCwasthebasetoethylenebiosynthesisInthep

9、rocessofethy一1enebiosynthesis，ACCsynthaseandACCoxygenaseweretwolimitenzymesandtheyregulatedthisprocessbyregulatingthebiosynthesisreactionofSAM斗ACC—ethyIene，whichaffordedthetheoreticalfoundationforcontrollingtheprocessofr

10、ipeningandsenescenceofmelonfruitandcultivatingstorablevarietiesbygeneticengineer，ThesharpincreaseofsolublepectincontentoffleshwasthemainreasonofthefastdecreaseofmelonfruitfirmnessPolygalacturonase(PG)regulatedthefruitsof