多效唑（PP333）對木薯一些生理效應(yīng)及產(chǎn)量影響的研究.pdf

1、廣西大學(xué)碩士學(xué)位論文多效唑（PP333）對木薯一些生理效應(yīng)及產(chǎn)量影響的研究姓名：周鳳玨申請學(xué)位級別：碩士專業(yè)：作物栽培學(xué)與耕作學(xué)指導(dǎo)教師：許鴻源2003.5.1廣塒大學(xué)顧士學(xué)位論文STUDIESONPACLOBUTRAZOL(PP333)’SINFLUENCEONSOMEPHYSIoLoGICALEFFECTSANDYIELDoFCASSA：VAABS’I’RAC’I’TakevarietyGR911astestingmaterial，

2、spray500mg’L～and1000mgL一1paclobutrazol(PP333)solutiononleavesduringexpandingperiodofroottuberstestregularlyrelatedindexesoftheagronomiccharacters，photosynthesisandelectrolytepenetration，enzymeactivityproline，MDAandthecon

3、tentofsolublesugarandstarchandthetotalcontentofnitrogenandproteintosearchtheeffectofPP333oncassava’Sgrowth，yieldandqualityResultsthroughstatisticalanalysisasfollows：1、PP333shortenstheplantheightandleafstalk，enlargestheca

4、neandroot／crownratio，andregulateseffectivelythegrowingrelationbetweenpartsonandundertheground2、PP333increasesthecontentofphotosyntheticpigment，weightofuniteleafnetphotosyntheticandstomataconductance，improvesthephotosynth

5、eticqualityandpromotesthephotosyntheticmaterialaccumulation3、PP333reducesthecontentofsolublesugarbutincreasesthetotalcontentofnitrogenandprotein，delaystheagingofleavesandpromotestheexpandingoflaterstageroottuber4、PP333im

6、provestheactivityofsuchprotectiveenzymesasPOD，CATSODandSOon，increasesthecontentofprolinebutreducescontentofMDA，thusimprovestheabilityofresistancetoadversecondition5、PP333increasestheyieldandcontentofstarch，andimprovestec