玉米絲黑穗病發(fā)病率相關因素分析和抗病資源篩選.pdf

1、Y774567分類號：$4351314密級：弋目差≮夭等學位論文單位代碼：10019學號：277171玉米絲黑穗病發(fā)病率相關因素分析和抗病資源篩選AnalysisofRelatedDiseaseFactorstoMaizeHeadSmutandScreeningofResistanceCultivars指導合作指申請學專業(yè)領研究所在教師：奎健強熬攫導教師：郭盤鰲班窺雖位類別：盔些推亡亟域名稱：控擅些方向：坑痘直疊學院：壅堂皇生塑拉盔堂暄

2、2005年4月AnalysisofRelatedDiseaseFactorstoMaizeHeadSmutandScreeningofResistanceCultivarsAbstractTheexpefimen乜that6inoculatedtreatmentsof4maizecultivarswithdifferentlevelofresistancetomaizeheadsmutfSphacelotheareilianao(uhn

3、)ClintVatZeae)，testingoffieldnaturaldiseaseincidencefor7differentseedtimes，croprotationexperimentbyservingthe4cropsastheformerstubbleandwiththemaizecultivarseachotherwerecinductedThefieldnaturalincidenceofthediseasein4ma

4、jormaizeplantingregionsinJilinprovinceandspringmaizeinChinawasinvestigatedTheresultsshowedthatintheconditionofdifferentquantKiesofinoculuminsoil，theincidenceofthediseaseamongthemaizecultivarshadaregulartendencywhichincre

5、asedwiththequantityofinoculuminsoilraised，andcultivarswithstrongresistancewerelesssensitivetotheenvironmentthancultivarswithlowresistanceAlongwitltheprolongingoftheseedtimetheincidenceofthemaizeheadsmutwentdown，buttheten

6、dencywasnotobviousCroprotationbetweenhigIlresistanteultivar(HR)andresistantcultivar(R)，betweenhi曲resistanteultivar(HR)andSUSC‘：ptiblecultivar(s)hadasamltimpactontheincidenceofmaizeheadsmutTherewasagreateffectonthedisease

7、ratingofmaizeheadsmutincroprotationbothbetweenresistantcultivars(R)andhighsusceptiblecultivars(HS)，andbetweensusce：ptiblecultivars(s)andhigIIsusceptiblecultivars(HS)Itwaslargelyapparentthatthediseaseratingofhybrideultiva

8、rsvariedfrommajormaizeplantregionsinChinaaccountingforthereweredifferentquantitiesofinoculuminsoilamongtheplantregions，orpossesseddifferentpathogenicraces，furthermore，thedifferentcultivarshadamuchgreatdifferenceintheresp

9、onsetacesofmaizeheadsmutBasedonthepathogenicitytestsforthe50hybridsand60parentinbredsspreadmainlyintheproductionandbreedingofJilinprovince(01％)itshowedthatthehybridsandparentinbredscamefromdifferentareasdifferedobviously

10、intheirresistancetomaizeheadsmut：TangSiPingTou，Ye107，andlocalgermplasmsaresusceptiblecultivarstothedisease(SHS)，someforeigngermplasm，suchasLancast，78599，andsoon，Areresistantcultivars(R～HRj，Therewasadeclineintheresistance

11、tothediseasebetweenDan330andLUline，fortheyhadbeenspreadformanyyearsWescreenedout42highresistantcultivarstomaizeheadsmutsuchasWK15，WK29，WK40andsoon，andsomeinbredsandagroupofbasicresources，providingfu曲ertheoreticbasisandge