不同品種薄皮甜瓜果實(shí)成熟和采后生理生化變化規(guī)律的研究.pdf

1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文不同品種薄皮甜瓜果實(shí)成熟和采后生理生化變化規(guī)律的研究姓名：陳雷申請學(xué)位級別：碩士專業(yè)：蔬菜學(xué)指導(dǎo)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