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1.
Morethan10speciesofpathogenicfungiwereisolatedfromthenaturally infectedleavesofbarnyard grass(Echinochloacrus galli)in paddy.After preliminarybioassaying,itwasfoundthattheAlternariaalternata(Fr.)keissler(AA),Exserohilummonoceras(EM),and"99 10"werethreep…  相似文献   

2.
罗志义 《茶叶科学》1997,17(2):201-206
迄今在茶树上发现的粉虱有8种,即:黑刺粉虱Aleurocanthusspiniferus,杜鹃穴粉虱Aleu-rolobusrhododendri,山茶褶粉虱Aleurotracheluscameliae,归亚瘤粉虱Aleurotuberculatusguyavae,番石榴瘤粉虱Aleurotuberculatuspsidi,流苏子瘤粉虱Aleurotuberculatusthysanosper-mi,桔裸粉虱Dialeurodescitri,和杨梅类伯粉虱Parabemisiamyricae。本文对上述8种粉虱的形态、寄主、分布和天敌作了介绍。  相似文献   

3.
Thestudyofantisense_waxygene,coorporatedbyAgronomyCollege,YangzhouUnivandShanghaiPlantPhysiologyRe searchInst,theChineseAcademyofSciences,haspassedtheachievementevaluationrecently.Theresearchgroupcon structedanantisense_waxygenebyutilizingtheself_colo…  相似文献   

4.
CO39,itsnear_isogeniclines,havingsingleblastresis tance gene,C101LAC,C101A51,C104PKT,andC101PKT,anditsresistancegenepyramidlinesBL121,BL241,andA57_119,grewintheblastnurseryatIRRI.Theseedsweresowninfourbatcheswithtwoweeksinter valbetweenbatches,usingIR…  相似文献   

5.
Thericestemborer,Chilosuppres salis(Walker),isaseriouspestofrice plantsinChina.Z_11_hexadece_nal(Z11_16:Ald),Z_13_octadecenal(Z13_18:Ald),andZ_9_hexadecenal(Z9_16:Ald)werethemajorcompo nentsoffemalesexpheromone.Thereisfewstudyrelatedtothelurestoragedu…  相似文献   

6.
TheprojectofchemicallydefineddietandaminoacidnutritionofNilaparvatalugens,conductedbyCNRRIandZhejiangUniversitywasevaluatedon18thJan,2000inBeijingbytheMinistryofAgricultureinChina.Acommissionconsistedof9famousexpertsconfirmedthatgreatprogresshadbeenm…  相似文献   

7.
In1992,acrosswasmadebetweenXieqingzaoB,themaintainerlineoftheCMSXieqingzaoAwhichwasawild_abortivetype,andIR58025Btoimprovegrainap pearanceandcookingqualityoffemaleparentsofhybridrice.Atotalof23plantswereselectedfrom1238oftheF2populationin1993.Sixteen…  相似文献   

8.
Asgeneticmarkers,seedstorageproteinshavecharactersofhighlevelofpolymorphism,lessenvironmentalinfluence,andsimple geneticcon trol.Inthisstudy,Kinmaze(CK),LiuqianxinA,LiuqianxinB,Liuqian_xinR,77302_1,Ninghui3_2,C57,ChinsurahBoroII,TN1,IR8,IR24,andF1 and…  相似文献   

9.
Wenhua,CNRRI,Hangzhou310006,ChinaSince1990,theChineseGroupofAgricultureExpertshasintroducedninehybridricecombinationstoZambia.Theaverageyieldofthe9combinationswas10.5t/ha,being50 % 60 %higherthanthatofthelocalcommercialvarietiesIITA302andKafuxi5.Weiyou…  相似文献   

10.
Transposontaggingisapowerfultoolforgenestudy,es peciallyforgenesamongdifferentplants,suchasAra bidopsis,tobacco,andtomato,etc.Thiseffectivestrategyforgeneisolationhasbeenappliedtoriceandprogresshasbeenmadeinrecentyears.Wedevelopedarapidandhigh efficie…  相似文献   

11.
Theprogramof"Transferbacterialblight_resistancegeneXa_21intothehybridrice",cooperatedbytheGeneticInst,ChineseAcademyofSci,CropInst,ChineseAcadofAgriSci,andAgronomyCollege,YangzhouUniv,haspassedthroughtheidentificationrecently.ThestudyconstructedtheXa…  相似文献   

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

13.
Whitebackedplanthopper(WBPH),Sogatellafurcifera(Horvath),isoneofthemostdevastatinginsectpestsonriceinAsia.Itscontrolmainlydependedonthechemicalpesticides.Surveysofinsecticidesusceptibilityrevealedthatorganophos phorusandcarbamateresistancehasemergeds…  相似文献   

14.
TechnologiesofuplandricepopularizedinOceaniaAneconomictechnologyprogram—Uplandriceperennialrootcultivationtechnique,supportedbyFujianProvince,hasappliedsuccessfullyinPapuaNewGuinea.Thethirdstubblehasachievedabumperharvestrecently,withayieldof6390kg/h…  相似文献   

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

16.
短光敏不育水稻宜DS1异交性观察初报   总被引:1,自引:0,他引:1  
短光敏不育水稻宜DS_1异交性观察初报AnobservationontheoutcrossingcharacterofYiDS1,aPGMSricewiththesterilityinducedbyshortdaylength黎世龄,高一枝,李会如,...  相似文献   

17.
浙江省农科院发现水稻温敏感苗色突变体Athermo-sensitiveseedling-colourmutantinricediscoveredbyZhejiangAcademyofAgriculturalSciences浙江省农科院于1991年在杭...  相似文献   

18.
Negative phototropism of rice root   总被引:3,自引:0,他引:3  
Itisoftenbelievedthatthestemofhigher plantshascharacteristicsofpositive phototropism,andtherootshowsnophototropismornosensitiv itytolightthoughtherootofArab dopsiswasreportedpossessingchar acteristicsofnegative phototropism.Inthisstudy,adistinctnegative…  相似文献   

19.
Fivebacteriastrainswithhigherchitinaseactivitywereisolatedbyus ingatechniqueofenrichedcellwallofR.solani.AllofthemshowedinhibitingeffectonthegrowthofR.solani.Beingcultured3d,strainCH_1showedhigherchitinaseactivityonthechitinplate.Thediameterofthetran…  相似文献   

20.
Aprojectfrom863whichisoneofthenationalhighandnewtechnologyprograms,"Develop mentofnewricevarietiesresistanttoriceblastandsheathblightbyusinggeneengineering"haspassedtheexpertidentification.Thenewtypeofricevarietiesisexpectedtoyield450kg/hamorethanthe…  相似文献   

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