简介:WoodsfromKoreanLarch,ChineseFir,Aspens,Manchumian,andFortunesPaulowniawerechosenforinvestigation.Specimenscutfromtheair-driedwoodshadacubicshapewithnominalair-driedsizeof17.0mmand8.5mm.Oven-diedspecimenswereputincontainersfilledwithwaterandwatersorptionwasimplementedatatmosphericpressureandroomtemperature.ResultsfromtheexperimentcouldnotdescribedexactlybythemodelofsteadystateflowfromDarcy'law.Anempiricalequationisputforwardfo...
简介:Thestatusofagriculturalnon-pointsource(NPS)pollutioninChinaisquiteaustereowingtolotsoffactors,thecharacteristicsofwhichincludesevereN,Peutrophicationsinwaterbodies,unsuitablestructureofagricultureandthelackofreasonablemanagement.Itwaswellknownthatforestcouldplayanimportantroletocontrolsoil&watererosion,uptakeextrasoilnutrientsaswell.Howeverforestcoverageisratherlowintheheadwatersregion.TheresearchonthecausesofNSPpollutionandthesignificancebydevelopingagroforestrytodealwiththeproblemispresentedinthepaper,aswellasthefunctionofagroforestryandtherelatedmeasuresofpollutioncontrolling,e.g.,riparianforestbufferzonesbuilding.Asaconclusion,controllingthelossofsoilandwaterisregardedasanimportantcrucialactionandmajorresearchdirectioninthefield.TherebythebenefitsofpushingupagroforestryinslopstocombatwatereutrophicationandpreventNSPpollutionfromworseningaresignificant.
简介:Theaccumulationofpigmentsaffectsthecolorofricehullswhileonlylimitedinformationisknownaboutitsunderlyingmechanisms.Inthepresentstudy,aricebrownhull6(bh6)mutantwasisolatedfromanethanemethylsulfonate(EMS)-inducedIR64mutantbank.Brownpigmentsstartedtoaccumulateinbh6ricehullsafterheadingandreachedahigherlevelinmatureseeds.Somemajoragronomictraitsincludingpaniclelengthand1000-grainweightinbh6weresignificantlylowerthanthoseinitscorrespondingwildtypeIR64,whileotheragronomictraitssuchasplantheight,growthdurationandseed-settingratewerelargelysimilarbetweenthetwogenotypes.Theanalysisofpigmentcontentshowedthatthecontentsoftotalflavonoidsandanthocyanininbh6hullsweresignificantlyhigherthanthoseinIR64hulls.Ourresultsshowedthatthebrownhullphenotypeinbh6wascontrolledbyasinglerecessivegenewhichlocatesonthelongarmofchromosome9.Sequencinganalysisdetectedasinglebasesubstitution(G/A)atposition1013ofthecandidategene(LOCOs09g12150)encodinganF-boxdomain-containingprotein(FBX310).Functionalcomplementationexperimentusingthewildtypeallelecanrescuethephenotypeinbh6.Thus,wenamedthismutatedgeneasOsFBX310bh6,analleleofOsFBX310functioningasaninhibitorofbrownhull.TheisolationofOsFBX310bh6anditswildtypeallelecanprovideusefulexperimentalmaterialsandwillfacilitatethestudiesonrevealingthemechanismsofflavonoidmetabolisminmonocotplants.