共查询到20条相似文献,搜索用时 15 毫秒
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Variation of wheatgrass chromosomes in wheat-wheatgrass alien addition line "TAI-27"revealed by fluorescence in situ hybridization (FISH) 总被引:3,自引:0,他引:3
Transferofaliengenestowheatthroughchromosomeengineeringisoneoftheimportantwaystoimprovewheatgeneticbackground.Thebasicstepsofthisprocedurearefirsttotransferalienchromosomesintowheat,andthentointegratetheusefulgenesofalienchromosomesintowheatchromosome… 相似文献
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TransformationofOrychophragmusviolaceusUsingAgrobacteriumtumefaciensAndRegenerationofTransgenicPlantsa¥ZHOUJi-ming(周冀明);WEIZh... 相似文献
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Wildgermplasmconsistsofanimportantbasisforgeneticimprovementofcultivatedrice.OryzameyerianaisoneofthethreewildOryzaspeciesfoundinChina[1].AccessionsoriginatedinYunnanProvinceexhibitstrongresistancetobacterialleafblight[2].O.meyerianagrowsonthehillsideunde… 相似文献
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The Expression of Nerve Growth Factor Receptor on Schwann Cells and the Effect of These Cells on Regeneration of Axons in Tra... 相似文献
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非致病微生物在植物—病原菌协同进化中的作用 总被引:2,自引:0,他引:2
非致病微生物在植物-病原菌协同进化中的作用单卫星(西北农业大学植保系,陕西杨陵712100)TheRoleofNon-pathogenicMicroorganismsinPlant-pathogenCoevolution¥ShanWeixing(Depart-mentofPlantProtection,NorthwesternAgriculturalUniversity,Yangling,Shaanxi712100).ChineseJournalofEcology,1993,12(6),54-59.Inviewofpresentproblemsassociatedwithplantdiseasecontrol,coupledwithrecentadvancesinbiolog-icalcontrolofplantdiseasesandplant-pathogeninteractions,theauthorpointedouttheimportanceofnon-pathogenicmicroorganismsinhabitingplantsurfacesinregulationofplant-pathoge 相似文献
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Anorganism,S.cerevisiaewidelyusedinbrewing,bakingandinethanolproductionprocessesisnotabletohydrolysestarch.ThusthetraditionalconversionofstarchintoethanolandCO2dependsontheadditionoftheenzymespriortofermentation,whichleadstoliquificationandsaccharificat… 相似文献
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杨树护田林带疏透度模型及应用 总被引:3,自引:0,他引:3
杨树护田林带疏透度模型及应用张纪林,吕祥生(江苏省林业科学研究所,南京211153)(江苏省农林厅林业局,南京211153)PorosityModelofPoplarFarmlandShelterbeltandItsApplication¥ZhangJilin(Forestryscienceandtech-nologyresearchInstituteofJiangsu),LuXiangsheng(ForestryBureau“ofJiangsuProvince).ChineseJournalofEcology,1993,12(5):56-60。Inthisarticle,theauthorsatfirstmadethree-principledselection,partialcorrelation,bestmulti-prin-cipleregressionselectloninsequence,Secondlyonthebasisofresidualanalysis,theauthorsmadetestofhighleveragecase,influencecaseandoutlieronsample 相似文献
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最近 ,C .F .Kammerer教授来信告知 ,Discaspis这一属名已被LinK .S .教授于 1 988年在记述中国台湾的昆虫时首先使用了。因此 ,作者建议以新的属名Lopadaspis代替Dis caspis。Lopad (Gr.)义为平盘。在此 ,对Kammerer教授的提示和建议表示感谢。Lopadaspis,newnameforDiscaspisWangetal.,2 0 0 1WehaverecentlybeeninformedbyProf.C .F .KammererthatthegenericnameDisc… 相似文献
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新疆棘豆属一新种 总被引:1,自引:0,他引:1
假长毛棘豆 新种 图 1OxytropispseudohirsutaQ .WangetC .Y .Yang ,sp .nov .Fig.1SpeciesnovaaffinisO .assiensiVass.,sedcorollaaurea,vexillo 1 7~ 2 0mmlongo ,rostrocarinae 2~ 2 .5mmlongodiffert.Perennis,5~ 1 2cmalta ,basistipulisetpetiolispersistentibusdensevestita,subacaulis.Fo lia 3~ 8cm… 相似文献
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川东北二叠纪吴家坪期牙形石(刺)序列及其世界对比 总被引:14,自引:3,他引:11
对四川省宣汉县渡口和南江县桥亭吴家坪期地层的系统采集和研究结果表明,吴家坪期至少包括7个牙形石带,自下而上为Clarkinadukouensis带,C.asymmetrica带,C.leveni带,C.guanyuanensis带,C.transcaucasica带,C.orientalis和C.inflecta带。其中,前3个带的层位低于一直作为吴家坪期早期的C.liangshanensis带。吴家坪阶的顶界以置于C.inflecta带与C.subcarinata带之间较妥。同时,建立了Clarkinadukouensis,C.asymmetrica,C.bizarrensis,C.daxianensis,C.demicornis,C.inflecta,C.longicuspidata等7个新种。 相似文献
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在国际侵蚀控制学会(InternationalErosionControlAsociation,IECA)等国际机构的资助与倡导下,第一届亚太地区侵蚀控制与护坡生物工程大会暨展览(FirstAsia-PacificConferenceandExhib... 相似文献
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生物固氮─—生态农业的一个重要启动因素陈士平(辽宁省农业科学院土壤肥料研究所,沈阳110161)BiologicalNitrogenFixation—AnImportantRunningFactorofEcologicalAgriculture¥.ChenShiping(SoilandFertilizerInstilute,LiaoningAcademyofAgriculturalSciences,Shenyang110161).ChineseJournalofEcology,1993,12(2):31—33.LeguminousgreenmanurecropssuchassweetcloverandAstragalushuangheensis,canprovidedefiniteamountofbiologicallyfixed-NtomakeN-budgetbalance,promotesoilphysicalandchemicalproper-ties,reducesoilandwatererosion,andthus,increaseperunitareayieldandtotaloutputwhe 相似文献
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RFLP mapping and race specificity of bacterial blight resistance genes (QTLs) in rice 总被引:3,自引:0,他引:3
罗利军 梅捍卫 赵新华 钟代彬 王一平 余新桥 应存山 Z.K.Li A.H.Paterson D.L.Wang R.E.Tabien L.Zhu J.W.Stansel 《中国科学:生命科学英文版》1998,41(5):542-547
BacterialblightcausedbyXanthomonasoryzaepv.oryza(Xoo)isoneofthemostseriousricediseasesinAsia.Sincethe1920s,probingthegeneticbasisofresistancetoXooandbreedingresistantvarietieshavebeenahotpointofricescienceresearch[1,2].Bothtypesofresistance,VR(qualitativeres… 相似文献
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刘笃琏 《氨基酸和生物资源》1994,(3)
影响胱氨酸产品透光率的原因分析刘笃琏AnalysisonReasonsEffectingtheTransmittanceofCystineProduct¥LiuDulianAbstracts:Transmittanceisthemostdifficu... 相似文献
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DynamicChangesofβTubulinduringtheResumptionofMeiosisofMouseOocyteLIUHui;(刘辉)CHENDa-yuan;(陈大元)(StateKeyLaoboratoryofReproducti... 相似文献
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AsanadaptermoleculebetweenmRNAandaminoacid,tRNAplaysacrucialintermediateroleinproteinbiosynthesis.TheinteractionbetweentRNAandaminoacyltRNAsynthetase(aaRS)istheprerequisiteforaccuratetranslation.Resultsofinvivoandinvitroexperimentsindicatethatthespecif… 相似文献
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苜蓿尺蠖核型多角体病毒( Autographa californica nuclear polyhedrosis virus,AcMNPV)在细胞质中合成其囊膜蛋白,但在细胞核内组装并包埋病毒粒子,这些蛋白的核定向转运机制是人们甚感兴趣的课题。以AcMNPV多角体衍生型病毒ODV(occlusion-derived virus,ODV)的一种囊膜蛋白ODV-E18为对象,通过E18与一个标记短肽F 相似文献
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草基—鱼塘生态系统中能量转化与经济效益分析 总被引:4,自引:1,他引:3
草基-鱼塘生态系统中能量转化与经济效益分析王德建,徐琪,刘元昌(中国科学院南京土壤研究所,210008)Grassdyke-FishpOndEcosystem──ItsEnergyConversionandEconolnicBenefit¥.WangDejian;XuQi;LiuYuanchang(InstituteofSoilScience,AcademiaSinica,Nanjins210008).ChineseJoumalofE-colegyl1993,12(2):29-30.Usingsimulationtestmethod,theenergyconversioninagrassdyhe-fishpondecosystemisstudied,andwithaproductivesystemascontrol,theeconomicbenefitoftheecosystemisanalyzed.Theresultsshow:1.theutilizationrateofsolarenergybygrassis0.6%,andtheconversionefficiencyfromgrasstofishis 相似文献