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1.
在室内试验中,增加甲黄隆喷雾能显著减少tralkoxydim防除野燕麦的活性。该现象在tralkoxydim低剂量(例如,125ga.i/ha)和甲黄隆高剂量(8或12ga.i/ha)使用时非常明显。甲黄隆能单独显著地使野燕麦生长发育减少。而绿磺隆在剂量达到33ga.i./ha仍不能减小野燕麦生长,只能引致tralkoxydim的活性轻微的下降。在混合使用时,施药后6h时甲黄隆能使施在叶片上的^1  相似文献   

2.
SuperhybridriceXieyou9308,yielded11_12t/ha,wasbredinChina.Toprovidethe physiologicalbasisforsuperhybridricebreeding,wecarriedoutacomparativephysio logicalstudy ofXieyou9308andXieyou63,usingthehighyieldhy bridriceXieyou63(9.8t/ha)ascontrol.Resultsshowed…  相似文献   

3.
Theprogramof"Transferbacterialblight_resistancegeneXa_21intothehybridrice",cooperatedbytheGeneticInst,ChineseAcademyofSci,CropInst,ChineseAcadofAgriSci,andAgronomyCollege,YangzhouUniv,haspassedthroughtheidentificationrecently.ThestudyconstructedtheXa…  相似文献   

4.
Uptonow,13 gagenes,ga1toga13forsegregationdistortionhavebeenlocatedonvariousricechromosomes.Wedetectedanewlocusga14whichcausesasegregationdistortionofanisozymemarkerPgi1onchromosome3.Todeterminetherecombinationvalueforga14andthemarkergenePgi1,atotalo…  相似文献   

5.
TechnologiesofuplandricepopularizedinOceaniaAneconomictechnologyprogram—Uplandriceperennialrootcultivationtechnique,supportedbyFujianProvince,hasappliedsuccessfullyinPapuaNewGuinea.Thethirdstubblehasachievedabumperharvestrecently,withayieldof6390kg/h…  相似文献   

6.
Recently,anewTGMSsource,UPRI95_140TGMS,hasbeenidentifiedinourhybridbreedingprogram.TheTGMStraithaddisplayeddigenicin heritance.However,thedetailedin vestigationofthelinerevealedmuchcomplicatedinheritance.Thesalientfindingsweresummarizedbelow:1.Basicge…  相似文献   

7.
国内报刊花生文摘(二)发育和早萌中花生胚胚轴与子叶内BAPAase活性的差异/林鹿(华南理工大学轻工食品学院),傅家瑞∥植物生理学报.-1997,23(1).-29~33花生胚发育过程中,子叶和胚轴中都出现BAPAase活性,花生种子萌发时,子叶和胚...  相似文献   

8.
Wenhua,CNRRI,Hangzhou310006,ChinaSince1990,theChineseGroupofAgricultureExpertshasintroducedninehybridricecombinationstoZambia.Theaverageyieldofthe9combinationswas10.5t/ha,being50 % 60 %higherthanthatofthelocalcommercialvarietiesIITA302andKafuxi5.Weiyou…  相似文献   

9.
Pretreatmentofriceseedlingsbyfo liarspraying withbenzothiadiazole(BTH)couldinducesystematicac quiredresistance(SAR)againstblast(Magnaporthegrisea)andbacterialleafblight(Xanthomonasoryzaepv.oryzae)diseases.Toelucidatethephysiologicalandbiochemicalmecha …  相似文献   

10.
Brown planthopper(BPH,Nila parvatalugensStal)andwhite backedplanthopper(WBPH,SogatellafurciferaHorvath)arethemaininsectsonriceinChina.Theinsecticideresistanceofthetwoplanthoppershaveoftenbeenreported.Availabilityoftheresistantpopulationisa prerequisite…  相似文献   

11.
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   

12.
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   

13.
ThesomaclonalmutantHX_3hasshownabroadspectrumresistancetobacterialblight.TostudytheinheritanceofthebacterialblightresistanceinHX_3,acrosswasmadebetweenHX_3andasusceptiblecultivarLongtefuA.TheF2populationof418plantswasinoculatedwithChinesebacterialbli…  相似文献   

14.
Transposontaggingisapowerfultoolforgenestudy,es peciallyforgenesamongdifferentplants,suchasAra bidopsis,tobacco,andtomato,etc.Thiseffectivestrategyforgeneisolationhasbeenappliedtoriceandprogresshasbeenmadeinrecentyears.Wedevelopedarapidandhigh efficie…  相似文献   

15.
Thestudyofantisense_waxygene,coorporatedbyAgronomyCollege,YangzhouUnivandShanghaiPlantPhysiologyRe searchInst,theChineseAcademyofSciences,haspassedtheachievementevaluationrecently.Theresearchgroupcon structedanantisense_waxygenebyutilizingtheself_colo…  相似文献   

16.
《广东茶业》2002,(1):35-36
泡好一杯茶,要做到茶好、水好、火好、器好,这叫“四合其美”。To prepare a good cup of tea,you need fine tea,good water,proper temperature and suitabletea sets.Each of these four elements is indispensable.烧水时,一沸为“蟹眼”,二沸为“鱼眼”,三沸称作“腾波鼓浪”。There are three stages When naier Is bolting.At the first sta…  相似文献   

17.
鉴定的61份野生花生材料对黄瓜花叶病副经毒CA株系(CMV—CA)抗性差异表现明显,A.glabrataPI262801和A.glabrataPI262794两份材料表现免疫,A.spPI338454表现高抗。A.glatrata、A.pusilla、A.rigvnii、A.paraguariensis和A.cardenasii等5个种的材料对CMV—CA抗性比A.villosa、A.montieola和A.appressipila的材料要强。部分材料对CMV—CA和花生矮化病毒Mi株系(PSV一Mi)两种病毒具有相同的抗性。  相似文献   

18.
水稻恶苗病病原──串珠镰孢浙江变种拉丁学名的订正Fusariummoniliformevar.zhejiangenseWangetH.K.Chen,ANewPathogenofBakanaeDiseaseofRice¥//水稻恶苗病,又名水稻马鹿苗病...  相似文献   

19.
蜗牛对大豆危害分析及经济阈值的初步研究   总被引:3,自引:0,他引:3  
赵晓武  黄佩璋 《大豆科学》1996,15(3):258-262
在玉米大豆作田中设置重复试验,研究蜗牛对大豆危害及控制的经济阈值,蜗牛危害与大豆生育、产量性状呈y=Ae指数函数关系,与产量致损率呈Y=Ax幂函数关系。据Chiang,HC(1979)恒等变换模式InET=In/EC.Y.Al.p.sc/Bi,设计了大豆各亩产量时防治蜗牛的阈限动态指标,从防治时参考应用。  相似文献   

20.
CO39,itsnear_isogeniclines,havingsingleblastresis tance gene,C101LAC,C101A51,C104PKT,andC101PKT,anditsresistancegenepyramidlinesBL121,BL241,andA57_119,grewintheblastnurseryatIRRI.Theseedsweresowninfourbatcheswithtwoweeksinter valbetweenbatches,usingIR…  相似文献   

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