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简介：欧·享利是美国著名的短篇小说家。本文是他的代表作之一。本文讲述了一名身患疾病的女孩将自己的性命寄托在一片藤叶上，其间会发生什么事呢？请看……

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简介：人的意志力有时候非常强大，只是需要你用到恰当的地方。有的时候它看起来更像心理暗示，你的暗示越强烈，事情就会向着你暗示的方向前进。就像本文中的女主人公Johnsy一样。Johnsy的命运最终会如何呢？看完本文，答案将会揭晓。

简介：Leafshapesarenotonlytheusefulindicatorsinplanttaxonomy,butalsotheimportantfactorsaffectingenergyandmaterialexchangeinleaves.Inthispaper,wecollectedandscannedtheleavesofNitrariatangutoruminDengkouofInnerMongoliaAutonomousRegion（themeanannualprecipitation145mm）andMinqinofGansuProvince（themeanannualprecipitation115mm）andN.sphaerocarpainDunhuang,andthenanalyzedleafshapeparameterswithImage-ProPlus6.0imageprocessingsoftwareandleafδ13CvaluesintheisotopelaboratoryoftheChineseAcademyofForestry.Theresultshowedthat:1)asleafareaincreasedwithincreasingwateravailabilitytheincreasesintheleaflengthandwidthwereasynchronously;2)withthesameleafwidth,the1eavesofN.tangutorumandN.sphaerocarpaweresignificantlylongerinhighwateravailableconditions;and3)althoughthereweresignificantlydifferencesinwateravailabilitybetweenDengkouandMinqin,aswellasbetweenthebottomandmiddleofthealluvialfanneartheEastLakeinDunhuang,theleafδ13CvaluesofN.tangutorumorN.sphaerocarpaweresimilarindifferentwaterconditions（P>0.05）.Ourresultssuggestedthattheratioofleafperimetertoareawouldbeanimportantfactorwhichlinkedleafshapetoplantwaterphysiology.Duringgrowingprocedureofleafarea,leaflengthincreasewaspriortoitswidthtoalleviatethereductioninratioofperimetertoareaandmaintainwateruseefficiencyoftheplant.

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简介：Aleafinclinationangledistributionmodel,whichisapplicabletosimulateleafinclinationangledistributioninsixheightsoflayeredcanopyatdifferentgrowthstages,wasestablishedbycomponentfactorsaffectingplanttypeinrice.Theaccuracyofthesimulationresultswasvalidatedbymeasuredvaluesfromafieldexperiment.Thecoefficientofdetermination(R2)andtherootmeansquareerror(RMSE)betweenthesimulatedandmeasuredvalueswere0.9472and3.93%,respectively.Thesimulationresultsshowedthatthedistributionofleafinclinationanglesdifferedamongthethreeplanttypes.TheleafinclinationangleswerelargerinthecompactvarietyLiangyoupeijiuwitherectleavesthanintheloosevarietyShanyou63withdroopyleavesandtheintermediatevarietyLiangyouY06.TheleafinclinationanglesweredistributedinthelowerrangeinShanyou63,whichmatchedupwithfieldmeasurements.Thedistributionofleafinclinationanglesinthesamevarietychangedthroughoutthesevengrowthstages.Theleafinclinationanglesenlargedgraduallyfromtransplantingtobooting.Duringthepost-bootingperiod,theleafinclinationangleincreasedinShanyou63andLiangyouY06,butchangedlittleinLiangyoupeijiu.Ateverygrowthstageofeachvariety,canopyleafinclinationangledistributiononthesixheightsofcanopylayerswasvariable.Ascanopyheightincreased,thelayeredleafareaindex(LAI)decreasedinallthethreeplanttypes.However,whiletheleafinclinationanglesshowedlittlechangeinLiangyoupeijiu,theybecamelargerinShanyou63butsmallerinLiangyouY06.Thesimulationresultsusedintheconstructedmodelwereverysimilartotheactualmeasurementvalues.Themodelprovidesamethodforestimatingcanopyleafinclinationangledistributioninriceproduction.

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简介：许多米饭点叶(系统程序设计语言)异种是为理解在植物涉及强风抵抗，细菌的老家抵抗和规划房间死亡的机制的理想的来源。在米饭的50点叶异种的基因控制被描绘了，一些点叶基因也被孤立。这篇文章考察为他们的显型，和他们对主要米饭疾病的抵抗回答负责的点叶基因的起源，基因模式，隔离和描述。

简介：ChemicalanalyseswereconductedwithleaveoilsofEucalyptussmithii,E.bakeri,E.polybractea,E.dives,E.radiataandE.macarthuriivvhichwereintroducedtosouthwesternChinafromAustralia.ItwasfoundthattheleafoilsofE.smithii,E.bakeriandE.polybracteacontained81-90%of1,8-cineole,andE.divesandE.radiatacontainedhighera-phelandreneandpiperitone.Therevveresignificantinter-andintraspeciflcvariationsinleafoilyield,italsovariedwithseasonsinvvhichleaves...

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简介：这份报告为金nanoparticles的合成描述Fagopyrumesculentum叶子的ethnolic摘录的使用。紫外可见的光谱学分析显示了金nanoparticles的成功的形成。综合nanoparticles被传播电子显微镜学(TEM)描绘，高分辨率TEM(HRTEM)并且被发现在有8.3nm的一种平均尺寸的形状球形、六角形、三角形。金nanoparticles的水晶的性质从X光检查衍射(XRD)和精选区域的电子衍射(SAED)被证实模式。Fourier变换红外线(英尺红外)并且精力散的X光检查分析(EDX)在金nanoparticles的表面上建议了器官的biomolecules的存在。对癌症房间衬里的人的HeLa，MCF-7和IMR-32的Cytotoxicity测试表明金nanoparticles是无毒的并且因此在各种各样的生物医学的应用为使用有潜力。

简介：Alightbrownspotted-leafmutantofricewasisolatedfromanethanemethylsulfonate(EMS)-inducedIR64mutantbank.Themutant,designatedaslbsl1(lightbrownspotted-leaf1),displayedlightbrownspotinthewholegrowthperiodfromthefirstleaftotheflagleafundernaturalsummerfieldconditions.Agronomictraitsincludingplantheight,growthduration,numberoffilledgrainsperpanicle,seed-settingrateand1000-grainweightofthemutantweresignificantlyaffected.Geneticanalysisshowedthatthemutationwascontrolledbyasinglerecessivegene,tentativelynamedlbsl1(t),whichwasmappedtotheshortarmofchromosome6.Bydevelopingsimplesequencerepeat(SSR)markers,thegenewasfinallydelimitedtoanintervalof130kbbetweenmarkersRM586andRM588.Thelbsl1(t)geneislikelyanovelricespotted-leafgenesincenoothersimilargeneshavebeenidentifiednearthechromosomalregion.Thegeneticdataandrecombinationpopulationsprovidedwillfacilitatefurtherfine-mappingandcloningofthegene.

简介：干燥播种是一个节省资源的米饭建立方法。与相等的收益，干燥播种充满的米饭(数据设置就绪)为传统的移植充满的米饭(TFR)被看作了代替。然而，在叶的差别和根老朽很少在谷物在数据设置就绪和TFR之间充满期间被识别。在这研究，根长度，根尖端数字和在成熟期间的米饭变化Huanghuazhan和Yangliangyou6的叶老朽在数据设置就绪和TFR之间被比较。结果证明在数据设置就绪的顶三叶子有相对更低的SPAD价值，更低的N内容和早熟的叶老朽的特征。另外，全部的根长度和数据设置就绪的全部的根尖端数字是比TFR的那些显著地低的。在结论，早熟、快的叶老朽在成熟期间与不适当的根长度和根尖端数字被联系，它可能从氮供应的缺乏导致数据设置就绪。改进叶氮地位并且推迟叶老朽在期间上的技术在数据设置就绪充满谷物应该在未来研究被开发。

简介：Throughrecurrentbackcrossingincombinationwithmolecularmarker-assistedselection(MAS),restorerlinesR8006andRl176carryingXa-21,agenehavingbroad-spectrumresistancetoricebacterialleafblight,wereselected.BycrossingthetwolinestoCMSlineZhong9A,twonewhybridricecombinations,Zhongyou6andZhongyou1176weredeveloped.Thehybridsshowedhighresistancetodiseases,goodgrainqualityandhighyieldingpotentialinnationalandprovincialadaptabilityandyieldtrials.

简介：叶区域索引(LAI)是陆地表面植被系统的一个重要特征，并且也是为平衡的全球水和碳循环的模型的一个关键参数。由使用Landsat-5蓝色的反射价值，绿、红的隧道从米饭反射光谱模仿了，到LAI的乐队的敏感被分析，并且对各种各样的NDVI(规范的差别植被索引)的估计LAI的反应和能力，它被与红、绿、蓝的乐队的所有可能的联合代替一般NDVI的红乐队建立，被估计。最后，结论被米饭数据以不同条件测试。到LAI的红、绿、蓝的乐队的敏感在各种各样的条件下面是不同的。当LAI是不到3时，红、蓝的乐队对LAI更敏感。不过绿乐队在这种情况下比红、蓝的乐队对LAI不太敏感，它对在一个更宽的范围的LAI敏感。当植被索引被红、绿、蓝的乐队的各种联合组成时，为使这些的敏感成为植被的前提索引到LAI有意义是联合之一的价值比0.024大，即可见反射(力)>0.024。否则，植被索引将被浸透，导致LAI的更低的评价精确性。索引从红、绿、蓝的乐队的各种联合导出到LAI评价的植被的能力上的比较显示出那GNDVI(格林NDVI)，GBNDVI(绿色蓝色的NDVI)与LAI有最好的关系。到LAI评价的GNDVI和GBNDVI的能力在不同情形下面被测试，并且一样的结果被获得。它建议了更好执行比常规NDVI预言LAI的那GNDVI和GBNDVI。

简介：AllelopathiceffectsofEucalyptuscamaldulensisDehnh.wereconfirmedinPetridishandpotexperimentsinourpreviousstudies.However,thedegreetowhichsucheffectsundercontrolledexperimentsexistinmorecomplexecologicalsettingsremainstobetested.Thus,thepresentstudywascarriedoutbyincorporatingdifferentproportionsofgroundlitterofE.camaldulensisinsoil.Thegrowthofthreeagriculturalcrops:falen(Vignaunguiculata(L.)Walp.),chickpea(CicerarietinumL.),andarhor(Cajanuscajan(L.)Millsp.),andtwotreespecies,kalakoroi(Albiziaprocera(Roxb.)Benth.)andipilipil(Leucaenaleucocephala(Lam.)deWit)weretested.Therewereinhibitoryeffectsofleaflitterongermination,shootandrootgrowth,leafnumber,andcollardiameteraswellasareductionofnodulationbylegumecrops(25–80%reduction).Theextentoftheeffectswasdependentontheproportionofleaflitter,thespeciesandthetypeoftraits.Incontrasttoshootgrowth,theeffectonrootgrowthwasmoresevere.Noeffectongerminationwasfoundwiththeagriculturecropswhilethetwotreespeciesshowedreducedgermination.Theeffectwasgreaterinthepresenceofhigherproportionsofleaflittermixedinsoilwhileinsomecaseslowerproportionsstimulatedgrowth.Notallspeciesweresuppressed;A.procera,C.cajan,V.unguiculatashowedcompatiblegrowthwhileC.arietinumandL.leucocephalawerefoundincompatible.ThisstudyprovidesevidencethatE.camaldulensishasallelopathicpotentialunderfieldconditionsandacarefulselectionofassociatedcropsinagroforestrysystemsishighlyrecommended.

简介：FastPlant(Brassicarapa,Cruciferae)leaftissuefixedinglutaraldehyde-acroleinandpost-fixedinos-mium,wasexaminedforresponsetoseveraleasily-preparedheavymetalstains.Leadanduranium,separatelyandincombination,gavetypicalresultsacrossthespectrumofcellorganellets.Asasinglestainfollowingosmium,bismuthproducedimagesseeminglyequivalenttoleadanduranium.Phosphotungsticacidproducedverygoodmembranedelineationbutproducedawashed-outbackgroundimagesimilartothatfromleadstaining.Carbohydratecompoundswereespeciallyresponsivetoruthenium;thecytoplasmandthematrixofallorganelleswerealsostainedverywell.Theprocedureswerenomoredemandingthantraditionalstainingmethodsandmaybeeasilyusedinresearchandteaching.FastPlantmaterialsareareliable,quickandeasysourceoflivingmaterial.