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1.
Recently,anewTGMSsource,UPRI95_140TGMS,hasbeenidentifiedinourhybridbreedingprogram.TheTGMStraithaddisplayeddigenicin heritance.However,thedetailedin vestigationofthelinerevealedmuchcomplicatedinheritance.Thesalientfindingsweresummarizedbelow:1.Basicge…  相似文献   

2.
Recently,agreatprogresswasmadeinbreedingandcul tivationofsuperriceinChina.TheSouthDemonstrationAcceptanceMeetingofChinaSuperRicewasheldinOct17,2000inXinchangCounty,ZhejiangProvince.YieldmonitoringgrouporganizedbytheDepartmentofScience,TechnologyandEd…  相似文献   

3.
Thestrippedstemborer(SSB),Chilosuppressalis(Walker)isoneofthemajorinsectpestsofriceinChi na.ChemicalcontrolhasbeenacommonpracticeinSSBmanagementsince1950s.Insecticidesusedin cludedBHCbefore1983;organophos_phorusinsecticides(methyl_para_thion,trichopho…  相似文献   

4.
Bacterialisolatesof1274wereobtainedfrompaddysoil,sclerotiaofRhizoctoniasolani,lesionsofsheathblight(ShB),andriceplants.Sixty_onestrains,4.8 %ofthetotalisolates,showedstrongantagonisticabilityagainstR.solani.About57 %(727)wasmoderateandweakantag onistic…  相似文献   

5.
Whitebackedplanthopper(WBPH),Sogatellafurcifera(Horvath),isoneofthemostdevastatinginsectpestsonriceinAsia.Itscontrolmainlydependedonthechemicalpesticides.Surveysofinsecticidesusceptibilityrevealedthatorganophos phorusandcarbamateresistancehasemergeds…  相似文献   

6.
Studyingthesterilityofindica/japonicahybridwasapre requisitefortheutilizationofheterosisinhighyieldricebreeding.In1986,Ikehashietalfoundthatwidecom patibilityvarieties,whichpossessedS5_nallele,couldovercomethesterilityofindica/japonicahybrids,andthest…  相似文献   

7.
潜伏期──玉米大斑病抗性选择的可用指标D.R.Smith,J.G.Kinsey1939年以前,在美国由玉米大斑病菌(Exserobilumturcicum(Pass.)LeonardandSuggs=HelminthosporiumturcicumP...  相似文献   

8.
In1992,acrosswasmadebetweenXieqingzaoB,themaintainerlineoftheCMSXieqingzaoAwhichwasawild_abortivetype,andIR58025Btoimprovegrainap pearanceandcookingqualityoffemaleparentsofhybridrice.Atotalof23plantswereselectedfrom1238oftheF2populationin1993.Sixteen…  相似文献   

9.
Brown planthopper(BPH,Nila parvatalugensStal)andwhite backedplanthopper(WBPH,SogatellafurciferaHorvath)arethemaininsectsonriceinChina.Theinsecticideresistanceofthetwoplanthoppershaveoftenbeenreported.Availabilityoftheresistantpopulationisa prerequisite…  相似文献   

10.
TheInternationalHybridRiceTraining Class,organizedbyCNRRIandIRRIcorporately,washeldduringAug1toSep15,2000atCNRRI.Participators,14altogether,werefromIn dia,Philippine,VietNam,SriLanka,Bangladesh,Indonesia,andIRRI,respectively.Trainersintheclasswerefrom…  相似文献   

11.
FragrantRice2:ThericeoriginatedfromChengguandYangxiancoun ties,ShaanxiProvince.Whencooked,itwasfragrantandwaseasytobedigested.Itwassuitableforoldandweakpersons.ZaocaiguRice:ItwasfromXinchengandTianhuatowns,Ding nanCounty,JiangxiProvince.Thericehadshor…  相似文献   

12.
Fromover800fungalstrainsofTri chodermaSpp.,6strainswerefoundtogreatlyinhibitthegrowingofRhi zocotoniasolani,thepathogenofricesheathblightindualculture.Amongthem,strainT3wasthebestantago nist,whichreducedthe growing ofthepathogenby52.54%(Table1).Infield,…  相似文献   

13.
Thestudyofantisense_waxygene,coorporatedbyAgronomyCollege,YangzhouUnivandShanghaiPlantPhysiologyRe searchInst,theChineseAcademyofSciences,haspassedtheachievementevaluationrecently.Theresearchgroupcon structedanantisense_waxygenebyutilizingtheself_colo…  相似文献   

14.
玉米圆斑病菌研究的新进展   总被引:1,自引:0,他引:1  
Dodd.  JL 朱茂山 《杂粮作物》1995,(2):31-32,27
玉米圆斑病菌研究的新进展J.L.Dodd在玉米制种田里,由玉米圆斑病菌[Bipolariszeicola(Stout)Shoemaker(异名HelminthosporiumcarbonumUllstrup,Drechslerazeicola(Sto...  相似文献   

15.
Anewtechniqueofsamplepreparationforobservingthestomatalcharactersofriceleaf,thedesiliconizationandscrapingintoshapemethod,wasdeveloped.Themajoroperatingproceduresareasfollows:1.Samplingandfixing Cutthetestmaterialper pendicularlytothemainleafvein.Thes…  相似文献   

16.
Plantharbouredproteaseinhibitorisapartofthenaturalplantdefensesys temagainstinsectpredation.Plantstransformedwithforeign plant pro teaseinhibitorgenescanenhancere sistancetoinsectpests.Sofar,atleast20kindsofplants,includingtobacco,rice,tomato,cottoneta…  相似文献   

17.
TThefunctionsofricerootsareabsorptionofwaterandnutrition,synthesisofaminoacidandhomone,andtransportationofthesesubstratestoovergroundparts.Ricerootvitalityisveryimportanttothedevelopmentofovergroundpartsandyield.Sofar,manystudiesontherelationshipbetw…  相似文献   

18.
ShanxiblackriceItwasoriginallyfromYangCounty,Hanzhong Region.Thisricewasaworld_famousricevarietydevelopedin140BC.Ithadpitch_blacksurfacewiththeproteinandoilcontentsbeing6.8 %and20 %higherthanthatofcommonrice,respectively.Ithad15kindsofaminoacidsandmany…  相似文献   

19.
M.griseacausesoneofthemajordiseasesonrice,riceblast.Appresoriumformationisthekeyforthepathogentopenetrateintohosttissue.So,itisim portanttostudytheeffectofenvironmentalfactorsontheappresoriumformationindetails.Thispaperreportsourre searchesonthissubje…  相似文献   

20.
用微波浸煮和ICP—AES法测定茶叶中的微量金属KathrynLambleandSteveJ.HillDepartmentofEnvironmentelSciences,UniversityofPlymouth,DrakeCircus,Plymout...  相似文献   

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