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1.
提高油—稻茬秋季杂交稻的关键技术High—yieldingtechniquesforthecroppingpntternof″Rape—Earlyrice—Hybridriceseedproduction″周绪鹏(湖北省蕲春县种子公司436300)油...  相似文献   

2.
国家“863”计划两系法杂交中稻现场会纪要AsummaryoftheOn-the-spotMeetingonTwo-lineSystemMediumHybridRiceoftheState″863″project由国家863计划两系法杂交水稻重大项目...  相似文献   

3.
杂交水稻制种“九二0”一次喷施法初探″Oncesprayingmethod″ofGA3inhybridriceseedproduction苏运良(湖南省茶陵县种子公司412400)1试验材料与方法本试验设在枣市乡田家村沈朱仔的汕优晚3秋制田中。试验田...  相似文献   

4.
Genomicsisabiologytermappearedtenyearsago,usedtodescribetheresearchesofgenomicmapping,sequencing,andstructureanalysis,etc.Genomics,thefirstjournalforpublishingpapersongenomicsresearchwasbornin1986.Inthepastdecade,theconceptofgenomicshasbeenwidelyacce…  相似文献   

5.
Theshapesofsilicabodiesfrommo torcellsofindicaandjaponicaricearedifferent,soitispossibletobusedtodistinguishricesubspecies.BasedonthemorphologicalanalysisofsilicabodiesfromnativevarietiesinAsiancountries,thediscriminatefunctionfordistinguishingsubspe…  相似文献   

6.
Whitebackedplanthopper(WBPH),Sogatellafurcifera(Horvath),isoneofthemostdevastatinginsectpestsonriceinAsia.Itscontrolmainlydependedonthechemicalpesticides.Surveysofinsecticidesusceptibilityrevealedthatorganophos phorusandcarbamateresistancehasemergeds…  相似文献   

7.
Lodgingresistancehasbeenakeytargettraitforraisingyieldpotentialinriceanditisassociatedwithmanycom ponenttraitssuchasplantheightandstemthicknessandstrength,etc.Whilephenotypicselectionforlodgingre sistancehasbeeneffective,itsgeneticbasisremainspoorlyun…  相似文献   

8.
Ricepaniclelengthisaquantitativetraitcontrollednotonlybygeneticfactorsbutalsobyenvironmentconditions,especiallybynitrogensupplylevel.Itissupposedthatgenesofricepaniclelengthcouldbefullyexpressedundersuffi cientNsupplyandberestrictedbylowNstress.Deter…  相似文献   

9.
Torelievethedamageofsalttothecell,manyplantsac cumulatedsomelow_molecularweightorganiccompounds,whichwerecalledosmoprotectant,suchasbetaine,man nitol,andsorbitol.Thereforeifthegene_encodingenzymeresponsibleforsynthesizingtheosmoprotectantwastrans form…  相似文献   

10.
Abioticstressesincludingpotassiumdeficiencyarelimitingfactorsforincreasing rice yield.Ninerice genotypes(OryzaSativaL.,indica)differinginsensitivitytolowKstressselectedfrom200volume_solutionscreening wereusedinthisstudytoexamineaccumulationandtransloca…  相似文献   

11.
ThestudyledbyDrKunihiroY.(Japan)andDrQIANQian(China)nowadvancessmoothly.Mainpurposesandbackgroundsofthestudycanbedescribedasfollows:1)RiceisthemaincerealcropinChina.Successofthehybridricemakesthericeyieldsatisfyingtheincreas ingdemands.Butcreating aco…  相似文献   

12.
Bacterialblight(BB)causedby Xanthomonasoryzaepv.oryzae(Xoo)isoneofthemostdestructivediseasesofricethroughouttheworld.Thisstudywasconductedtounderstandthequalitativeandquantitativecomponentsinresis tanceofasegregatingricepopulationtospecificXoostrains.…  相似文献   

13.
Itwasdifficulttousethepronouncedheterosisofindi ca_japonicahybridsriceduetothepaniclesterilitycausedbymaleandfemalegameteabortion.Thefemalegameteabortioninmostofsubspecifichybridscouldbesolvedbyusinganabortion_neutralgeneS5_n,awidecompatibilitygene.T…  相似文献   

14.
Thedeclineofricequalityandgerminationabilityintheprocessofstoragewasabigproblemtofoodproductionandmanagement.Gasandtemperaturecontrolwasusedtode creasestoragelosing,butselectinggermplasmwithgoodstoragecharacterswasrare.Inpractice,itwasfoundthatstorag…  相似文献   

15.
Plantharbouredproteaseinhibitorisapartofthenaturalplantdefensesys temagainstinsectpredation.Plantstransformedwithforeign plant pro teaseinhibitorgenescanenhancere sistancetoinsectpests.Sofar,atleast20kindsofplants,includingtobacco,rice,tomato,cottoneta…  相似文献   

16.
Conservation and utilization of rice genetic resources in China   总被引:1,自引:0,他引:1  
RicegeneticresourcespresentsvariablyinChina.Therearelandracesandwildspecies,cultivatedlowlandriceanduplandrice,indica(Hsien)andjaponica(Keng)rice,early,middle,andlatericeaswellasglutinousandnon_glutinousrice.UptoFebruary2000,atotalof76,646riceaccessi…  相似文献   

17.
Japanese japonicaricecommonlyprovideswithanovicidalresistanceagainstthewhitebackedplanthopper(WBPH).Similarly,ovicidalactivi tywasalsofoundtoplayasignificantroleinastablefieldresistancetoWBPHinsomeChinese japonicarice.Ricevarietieswithovicidalre sistan…  相似文献   

18.
ThesomaclonalmutantHX_3hasshownabroadspectrumresistancetobacterialblight.TostudytheinheritanceofthebacterialblightresistanceinHX_3,acrosswasmadebetweenHX_3andasusceptiblecultivarLongtefuA.TheF2populationof418plantswasinoculatedwithChinesebacterialbli…  相似文献   

19.
Morethan70Streptomyceslavendulohygtroscopicusstrainswereisolatedfromthesoilsamplescollectedunderdifferentecologicalconditions.Fermentationcentrifugalsupernatant(FCS)ofthestrianswereusedasbiologicalcontrolagentstobioassayricediseasepathogensofsheathbl…  相似文献   

20.
Itwasfoundthatexogenousethyleneorethrelcouldinducericemalesterilityandendogenousethylenewasnegativelycorrelatedwithpollenfertilityandplayakeyroleintheoccurrenceofricemalesterility.However,itisunknownwhetherethyleneisrelatedtotheoccurrenceofCMS(cytopl…  相似文献   

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