不同鎘水平下棉花生長(zhǎng)和鎘及養(yǎng)分吸收的品種間差異.pdf

1、浙江大學(xué)碩士學(xué)位論文不同鎘水平下棉花生長(zhǎng)和鎘及養(yǎng)分吸收的品種間差異姓名：LawaliD.MamanBachir申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：作物栽培與耕作學(xué)指導(dǎo)教師：鄔飛波2002.5.1ABSTRACTGreenhousepotandhydroponicexperimentswereconductedovertheperiodoftwogrt、wingseasons(200102)，usingthree(0，01，andItamCd)and

2、four(0，0I，1and10pM)Cdlevels，respectivelyonHuajiachicampus，ZhejiangUniversitytfangzhou，ChinaThepolexperimentwascarriedOUtin200ItoselectthejelativelyCd—sensitiveandresistantcultivarrespectivelyThepreliminary7cultivarsusedf

3、ortheexperimemwereasfollows：Simia3，Zhongmial2，Zhongmial6，Zhongmial62(glandlessisogenelineofZhongmial6)，Caixuan3(naturalcoloredcottonwithgJeenfiber)，Caixuan2(naturalcoloredcottonwithbrownfiber)andZhemia9(glaudless)Afteran

4、alyzingtheresultsitwasdeterminedthatSimia3，andZhongmiaI6，Zhongmial62weretheCd—sensitiveandCdresistantcultivars，respectivelyAsecond，morein—depth，hydtoponicexpmimentwasconductedduringthesecondgrowingseasontoiovestigatetire

5、effectsofCdtoxicityonyietd，yieldcomponents，andmineraluptakeanddistribution，andCd，Cu，F(xiàn)eandZnconcentrationandchlorophyllcontentinfunctionalleavesduringontogenesisofthreedifferentCdtolerantcultivarsobtainedinpotexperimentTh

6、eresultsshowedthatCdconcentrationinvegetativeorgansincreasedwithincreasesofCdcortcentrationinthenutrientsolutionMeanwhile，Cdconcentrationindifferentvegetativeorgansisinorderasfollows：rootpetiolexylemfruitingbranch，leai陸p

7、hloemInaddition，Cdconcentrationinxylemofmainstemwassignificanthigherthanthatinphloem，indicatingthatxylemtranslocationmaybethemainwayforCdtranslationfromroottoshootandleafCadmiumconcentrationindifferentreproductiveorgansi

8、sinorderasfollows：seedcoat，seednutbollshellfiberOntheotherhand，therewassignificantdifferenceinCdconcentrationbetweencultivarsat1taMCdtreatment，andSimia3showedhigherCdconcentrationandgreatestreductioninlintyieldthanother2

9、cuhivarsForexample，lintyielddecreasesat01and1taMCdtreatmentswerefoundinSimia3by474％arm3541％overcontr01respectivelyHowever’thetintyieldofZhongmial6exposedto01uMCdincreasedby6969％incomparisonwithcontr01whileat1taMCdadecrea