弱筋小麦籽粒hmw-gs组成与积累与其对加工品质的影响

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1、周立云：的加工品质指标相应基积累量减少，各品氮肥用量，适当前移关键词：弱筋小麦；4扬州大学硕士学位论文ComTheir(YangzhouUniversity,YangzhouJiangsu,225009)AbstractThestudywasconductedontheExperimentalFarmofJiangsuProvincialKeyLabofCropGeneticsandPhysiologyofYangzhouUniversity,duringthetwowheatgrowingseasonsfrom2008to2010．Wi

2、thnineteenwheatgenotypesasthetestedvarieties，theexpressioncharacteristicsofthecomponentsandaccumulationofHMW-GSinwheatvarietieswithdifferentgenotypeswereinvestigated；therelationshipbetweenHMW-GSsubunit，proteincontenLwetgluten,sedimentationvalue，andotherqualityindicatorswe

3、reanalyzedtofindtheoptimalHMW-GSsubunit．Simultaneously,theeffectsofnitrogenontheaccumulationofHMW-GSwerealsoinvestigatedtoprovidetheoreticalfoundationfortheimprovementoftheprocessingqllalit)，ofwheat．Themainresultswereasfollows：1．Ofthenineteenwheatvariefis，thecomponentsofN

4、ull，7+8，2+12andNull，7+9，4+12wereonlyfoundinweak—glutenwheatvarieties，accountingfor40％and30％ofthetotalvarieties．IndifferentHMW-GSsubunitcomponentsofweak—glutenwheatvarieties，theoccurrenceprobabilityofsubunitNullatGlu—A6扬州大学硕士学位论文locationwas90％；theoccurrenceprobabilityofsub

5、unit7+8and7+9atGlu-BlocationWas40％and60％respectively．AttheGlu-Dlocation,themainsubunitWas2+12withanoccurrenceprobabilityof60％．followedbyanothermainsubunit4+12withanoccurrenceprobabilityof30％．Compared、撕mmid—andstrong—glutenwheat．thegrainqualityofweak-glutenwheatWasmoreaffe

6、ctedbyGlu·AandGIu-Dlocations．2．ThevarietiesofwheatwithdifferentcomponentsofHMW-GShaddifferentsubunitexpressionandaccumulationatdifferentlocations．Forthewheatvarietieswiththesanlesubunitexpression，theamountofaccumulationofHMW-GSWasdiverseatdifferentlocations，resultingintot

7、hedifferenceinthetotalaccumulation．Accordingtopathanalysis．thedirecteffectsofthefactorsatGlu-AlocationonthetotmaccumulationweregreaterthanthoseatGlu-BandGIu-Dlocations．3．Comparedwithsubunit1，thesubunitNullatGlu—Alocationofweakglutenwheatgrainhadlessimpactonproteincontent，

8、glutelincontentandtheratioofglutelintogliadin．Thevarieties、析thHMW-GSsubunit7+9werehigherinprotei