不同直链淀粉含量的水稻品种籽粒淀粉和蛋白质积累特性的.研究

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1、StudyoncharacteristicsofstarchandproteinaccumulationindifferentamylosecontentricevarietiesMasterstudent：JIEHou-ShengAssociateprof'．LITianUNIVERSITY，YAAN．SICHUAN，625014，CHINAAbstractsInthisexperiment，4ricevarieties(Snowpearl，themostinferioramyloseconten

2、t，Koshihikari，theloweramylosecontent，Gangyou527themediumamylosecontent，Hoshiyutaka，thehigharnylosecontent)wereusedtostudythecharacteristicsofthegrainstarchandproteinaccumulationthroughageneralmethodofcultivationandmanagement，Themainresultswereasfollowe

3、d：1．Duringgrainfilling，thehighamylosecontentricevarietieshavehigherChlorophyllcontent，widerleavesareas，highersoublesugarcontentinstem，sheaths，leaves，largerexportamountofsolublesugarinleavesandsheathsandlongercontinuanceofsolublesugarsupplyinstemthanlow

4、amylosecontentricevarieties．2．Thesolubleproteinofstems，sheathsandleavesofallvarietieswerehighattheearlyfillingstage．Anditgraduallybecamelowwithgraingrowing．Andthesolubleproteinofleaves，sheathsofmoderateandhighamylosecontentricevarietieshaveanincreasest

5、ageofsolubleproteinwhichlasts3～9daysafteranthesis，thecauseofsolubleproteinscontentandchangesinleavesandsheathsofdifferentricevarietieswasdecidedbytheendproteincontent，3．Thecontentofsugarwasthehighestatthestartoffillingstage，anditbecamelowduringthelater

6、development．Thecontentofsugarwasconsumedbefore9daysofathesisinhighamylosecontentricevarieties．Thecontentofsugarwasrareafter21daysofathesisinsuperlowamylosecontentricevarieties，andsugaroflowamylosecontentwaskeepingalowsupplementlevel．Thesugarofathesismo

7、derateandhighamylosecontentricevarietieswentupwiththeincreaseofblowingdays．4．LotsofFreeaminoacidinallvarietiesaccumulatedduringtheearlystageofgrainfilling．Anditdecreasesstepbystepduring30daysafteranthesis．Freeaminooflowandhigharnylosecontentvarietiesac

8、iddipsquickly．Andthelackoffreeaminoacidoflowandhighamylosecontentvarietieswasobviousinthelatergrainfillingstage．5．Theaccumulationofamyloseofallvarietiesagreedwiththechangeofgrainweight．Amylosecontentofgrainwaslowduringearlygrainfilling，