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1.
Itwasfoundthatexogenousethyleneorethrelcouldinducericemalesterilityandendogenousethylenewasnegativelycorrelatedwithpollenfertilityandplayakeyroleintheoccurrenceofricemalesterility.However,itisunknownwhetherethyleneisrelatedtotheoccurrenceofCMS(cytopl…  相似文献   

2.
Genomicsisabiologytermappearedtenyearsago,usedtodescribetheresearchesofgenomicmapping,sequencing,andstructureanalysis,etc.Genomics,thefirstjournalforpublishingpapersongenomicsresearchwasbornin1986.Inthepastdecade,theconceptofgenomicshasbeenwidelyacce…  相似文献   

3.
Toexplorethemechanismsofthedifferencesincapacitiesrelatedtophotodamage_resistanceofindicaandjaponicasubspecies,thexanthophyllcyclecomponents,violaxan thin(V),antheraxanthin(A),zeaxanthin(Z),PSⅡ_D1_proteincontents,andPSⅡ photochemicalefficiency(Fv/Fm)w…  相似文献   

4.
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   

5.
Invitrocultureofwildricewasdifficult.Recently,wefoundthathighagaroseconcentrationofdifferentmediacouldimprovethegreenplantdifferentiationfrequency ofcallifromwildrice.Wetestedtheeffectivenessofalter nationofagarandagaroseindifferentmedia.Threespecieso…  相似文献   

6.
Recently,agreatprogresswasmadeinbreedingandcul tivationofsuperriceinChina.TheSouthDemonstrationAcceptanceMeetingofChinaSuperRicewasheldinOct17,2000inXinchangCounty,ZhejiangProvince.YieldmonitoringgrouporganizedbytheDepartmentofScience,TechnologyandEd…  相似文献   

7.
Torelievethedamageofsalttothecell,manyplantsac cumulatedsomelow_molecularweightorganiccompounds,whichwerecalledosmoprotectant,suchasbetaine,man nitol,andsorbitol.Thereforeifthegene_encodingenzymeresponsibleforsynthesizingtheosmoprotectantwastrans form…  相似文献   

8.
Itwasdifficulttousethepronouncedheterosisofindi ca_japonicahybridsriceduetothepaniclesterilitycausedbymaleandfemalegameteabortion.Thefemalegameteabortioninmostofsubspecifichybridscouldbesolvedbyusinganabortion_neutralgeneS5_n,awidecompatibilitygene.T…  相似文献   

9.
ThestudyledbyDrKunihiroY.(Japan)andDrQIANQian(China)nowadvancessmoothly.Mainpurposesandbackgroundsofthestudycanbedescribedasfollows:1)RiceisthemaincerealcropinChina.Successofthehybridricemakesthericeyieldsatisfyingtheincreas ingdemands.Butcreating aco…  相似文献   

10.
Whitebackedplanthopper(WBPH),Sogatellafurcifera(Horvath),isoneofthemostdevastatinginsectpestsonriceinAsia.Itscontrolmainlydependedonthechemicalpesticides.Surveysofinsecticidesusceptibilityrevealedthatorganophos phorusandcarbamateresistancehasemergeds…  相似文献   

11.
ShanxiblackriceItwasoriginallyfromYangCounty,Hanzhong Region.Thisricewasaworld_famousricevarietydevelopedin140BC.Ithadpitch_blacksurfacewiththeproteinandoilcontentsbeing6.8 %and20 %higherthanthatofcommonrice,respectively.Ithad15kindsofaminoacidsandmany…  相似文献   

12.
Japanese japonicaricecommonlyprovideswithanovicidalresistanceagainstthewhitebackedplanthopper(WBPH).Similarly,ovicidalactivi tywasalsofoundtoplayasignificantroleinastablefieldresistancetoWBPHinsomeChinese japonicarice.Ricevarietieswithovicidalre sistan…  相似文献   

13.
RiceisthestaplefoodcropinChina.Inthesecondhalfofthe20th century,ricehasplayedanimportantroleinfeedingalargenumberofpeople.Inthe21stcentury,ricewillstillbeamainfoodcropinChinaandmakegreatcontributiontoChinesepeople′slife.1.Greatachievementsofrice produ…  相似文献   

14.
Fivebacteriastrainswithhigherchitinaseactivitywereisolatedbyus ingatechniqueofenrichedcellwallofR.solani.AllofthemshowedinhibitingeffectonthegrowthofR.solani.Beingcultured3d,strainCH_1showedhigherchitinaseactivityonthechitinplate.Thediameterofthetran…  相似文献   

15.
Ricepaniclelengthisaquantitativetraitcontrollednotonlybygeneticfactorsbutalsobyenvironmentconditions,especiallybynitrogensupplylevel.Itissupposedthatgenesofricepaniclelengthcouldbefullyexpressedundersuffi cientNsupplyandberestrictedbylowNstress.Deter…  相似文献   

16.
Abioticstressesincludingpotassiumdeficiencyarelimitingfactorsforincreasing rice yield.Ninerice genotypes(OryzaSativaL.,indica)differinginsensitivitytolowKstressselectedfrom200volume_solutionscreening wereusedinthisstudytoexamineaccumulationandtransloca…  相似文献   

17.
InTaiwan′shistory,riceandsugarcane,"thetwomaine conomicalfoundationstones"ofTaiwan,werewellknownintheworld.Taiwanwasoneofthemainrice_productionareasinChina,whichhadalwaysbeencalled"riceware house".Inthisarticle,theauthorwoulddoapreliminaryresearchonth…  相似文献   

18.
Theprogramof"Transferbacterialblight_resistancegeneXa_21intothehybridrice",cooperatedbytheGeneticInst,ChineseAcademyofSci,CropInst,ChineseAcadofAgriSci,andAgronomyCollege,YangzhouUniv,haspassedthroughtheidentificationrecently.ThestudyconstructedtheXa…  相似文献   

19.
Pretreatmentofriceseedlingsbyfo liarspraying withbenzothiadiazole(BTH)couldinducesystematicac quiredresistance(SAR)againstblast(Magnaporthegrisea)andbacterialleafblight(Xanthomonasoryzaepv.oryzae)diseases.Toelucidatethephysiologicalandbiochemicalmecha …  相似文献   

20.
ThesomaclonalmutantHX_3hasshownabroadspectrumresistancetobacterialblight.TostudytheinheritanceofthebacterialblightresistanceinHX_3,acrosswasmadebetweenHX_3andasusceptiblecultivarLongtefuA.TheF2populationof418plantswasinoculatedwithChinesebacterialbli…  相似文献   

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