水稻成熟期子粒碳代謝關鍵酶活性變化與品質(zhì)關系研究.pdf

1、東北農(nóng)業(yè)大學碩士學位論文水稻成熟期子粒碳代謝關鍵酶活性變化與品質(zhì)關系研究姓名：沈鵬申請學位級別：碩士專業(yè)：作物遺傳育種學指導教師：金正勛2003.6.1東北農(nóng)業(yè)大學農(nóng)學碩士學位論文StudyonRelationshipbetweenRiceQualityandActivitiesofKeyEnzymesInvolvedinCarbohy’drateMetabolismduringGrainFillingABSTRACT5japonica

2、(OrizasativaL)varetieswereinvestigatedtevealtherelationshipbetweeneatingandcookingqualityandchangesoftheenzymeactivitiesinvolvedincarbohydratemembolismduringgrainfillingunderdifferentnitrogennutritionTheresultswereasfoll

3、owedProteincontentinShtliludaoIandamylosecontentinDongnong416werehighestinvarietiestestedProteincontentandamylosecontentinTengxi180werelowestTengxi180andFushiguanghadhightastevalue，maxviscosityandbreakdownthanShuiluda01a

4、ndDongnong416，whereashadlowerinitialpastingtemperaturefinalviscosityandsetbackWithincreasingofnitrogennutritiontastevalue，maxviscosity，breakdownandconsistenceisdecreased，whereasProteincontent，initialpastingtemperature，se

5、tbackincreasedAmylosecontent，amylopectioncontentandtotalstarchcontentwereincreasingduringfillingstageStarchaccumulationintheearlystageislargerthaninthelatestageShuiludao1andDongnong416hadlargerstarchaccumulationratethanF

6、ushiguangandTengxi180ThetendencyWasreversedinthelatestageThedynamicchangesofADPglocosepyrophosphorylase(AGPP)solublestarchsynthase(SSS)，starchbranchenzyme(SBE)weresimilarduringfillingstageTheenzymeactivitieswerelowinthee

7、arlystageofgrainfillingandreachapeakin18～24dafterheadinganddecreasedinthelatestageofgrainfillingn圯activitiesofenzymesindifferentfillingstageandthetimetoreachamaximumweredifferentwithdifferentqualitytypesShuiludaolandDong

8、nong416wereearlierteachthemaximumthanFushiguangandTengxi180andenzymeactivitiesdecreaseddramaticallyinthelatestageofgrainfillingnedynamicchangesofFushiguangandTengxilS0werestableduringthegrainfillingandkeptlli曲activitiesi