简介：Fineroots（≤2mmindiameter）playimportantrolesincarbonbalanceandnutrientrecyclinginforestecosystem.Withthedevelopmentofthestudyonglobalcarboncycle,finerootshaveattractedconsiderableattentionasthemainsourceofsoilcarboninforestecosystem.Onthebasisofsyntheticanalysisofresearchreportsindomesticandforeignliteratures,wesummarizedandelaboratedthemajorabioticandbioticfactorsthatcontrolfinerootproductionandturnover.Theenvironmentalfactorsincludedsoilnutrient,soiltemperature,soilmoistureandtheCO2concentration.Soilorganisms,finerootmorphologyandforeststandcharacteristicswerediscussedasbioticfactorsinthispaper.Finally,wedefinedtheproblemsarisinginrootsystemresearchandprospectedthefutureresearchdirection.

简介：MYBtranscriptionfactorsrepresentafamilyofgenesthatincludetheconservedMYBDNA-bindingdomain,andtheyarewidelyinvolvedintheregulationofplantdevelopmentandsecondarymetabolism.Inthisstudy,PartofsequencesoftwoMYBtranscriptionfactorswasdeterminedthroughthecDNAmicroarrayhybridizationandselectionofcDNAlibraryderivedfromtendershoots.Thefull-lengthcDNAsofthegeneswereobtainedwithRT-PCRandRACE,andtheywere1132bpand1020bp,namedasCsMYB1andCsMYB2(GenBankaccessionNo.HQ660373andHQ660374),andcontainedORFsof879bpand675bpencoding292and224aminoacids,respectively.Sequencesanalysisshowedthatthededucedproteinmolecularweightofthetwogeneswere32.9kuand25.4ku,andtheproteinscontainedtwoconservedMYBdomainsneartheN-terminusandaconservedC1motifneartheR3domains.ThededucedaminoacidsequenceofCsMYB1andCsMYB2fromteaplantshowedhighidentitywiththatofotherplants,forinstanceCsMYB1shared57%homologywithMYB1ofGossypiumhirsutumandCsMYB2shared75%homologywithMYBC2ofVitisvinifera.Theresultofrealtime-PCRanalysisshowedthetwogeneswereexpressedconstitutivelyinalltissueswithdifferentexpressionlevels,e.g.therelativeexpressionlevelofCsMYB2inleafwashundredtimeshigherthanthatinroot.Additionally,shadingenhancedCsMYB1expression,whilethetreatmentdidnotaltertheexpressionlevelofCsMYB2.

简介：我们评估了在北伊朗在里海附近在Tavalesh区域影响大米鱼耕作的采纳的因素。我们与无限制的问题进行了调查。数据随机从184个回答者(61个采用者和123非采用者)被收集从选择村庄取样了并且分析了使用逻辑回归和多反应分析。家庭尺寸，与一个扩展代理人的接触的数字，在扩展教育活动的参予，在社会机构的会员和农场工人的存在是为大米鱼耕作系统的采纳的最重要的社会经济的因素。另外，经济问题是采用者报导的最普通的问题。象存取的缺乏那样的另外的问题捞食物拨出，鱼的损失，高质量的鱼鱼种和脱水和差的水质量的存取的缺乏对很多个农民也重要。

简介：ThevolatilesreleasebehaviorofpoplarpowderhasbeenstudiedbyTD-GC/MSonlinetechniqueatdifferenttemperatures.Theresultsshowthattheproportionofmainharmfulcomponentswashigherthanthatofbeneficialinthevolatilesofpoplarpowderat40℃and90℃,theharmfulcomponentswas1.7timeshigherthanbeneficialcomponents.Theproportionsofmainbeneficialandharmfulcomponentswereequivalentat60℃,whilethemainbeneficialcomponentswas5.42timeshigherthanthatofharmful.Takingpoplarwoodpowderassubstratetopreparewoodpowder-basedcompositesbyhigh-pressureno-gelmoldingcompactionbetweenthetemperatureofligninsofteningpointandwoodmaterialscarbonization(about150-180℃)canpresentasatisfactoryenvironmentalfriendliness.