简介：Seedgerminationprocesshascloselyrelationwithmaterialtransformationandenergyexchangewithintheseed.Studyonitsthermaleffectisimportantforunderstandingthemechanismandtheinfluencingfactorsoftheseedgermination.ThethermogeneticcurvesofseedgerminationofRobiniapseudoacaciawasmeasuredbyanew-typeconductivemicrocalo-rimetermadeinWuhanUniversity.Therelationshipwasanalyzedbetweenthegerminationthermogeneticregulationandseedgerminationphysiology.ThethermogenticcurveswerefurtheranalyzedbythermokinetictheorytoobtainthedynamicparametersandthethermokineticmodelonseedgerminationofRobiniapseudoacacia.Therelationshipofthethermogeneticpower(μw)andthegerminationtime(h)ofthegerminationprocessof20grainsRobiniapseudocaciaseedsat25℃wasP=208.77/[0.1937+0.8063exp(-0.06563t)]

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简介：Inordertostudyseedqualitychangesofmainafforestationspeciesunderhightemperatureandhighrelativehumidity,thedeteriorationmechanismofseedsofRobiniapesudoacaciaandPinustabulaeformisfromaridandsemiaridareasofNorthernChinawaselucidatedinthisstudy.Theseedswereartificiallyagedfor2and6datthetemperatureof45oCandtherelativehumidity(RH)of50%,75%and100%,respectively.Theresultsshowedthatthegerminabilitydecreasedandthecellmembranedeteriorated...

简介：Blacklocust(RobiniapseudoacaciaL.)wasthefirstNorth-AmericantreespeciesimportedtoEuropeatthebeginningoftheseventeenthcentury.Itiscommonlyplantedworldwidebecauseofitsadaptabilitytoenvironmentalstresses,itsvaluablewood,easypropagation,frequentandabundantseedproduction,excellentcoppicing,highseedlingsurvival,andrelativelyhighwoodyield.InEurope,RomaniaandHungaryhavethemosthighly-developedblacklocustgrowingtechniquesandexperiences.Asaresultofincreasinginterestinblacklocustinmanycountries,thisreviewaimstoprovideacomprehensiveoverviewofstate-of-the-artsiterequirements,propagation,improvementandmanagement(includinggrowthandyieldaswellasuseinenergyplantations).

简介：TheFabaceae(legumefamily)isoneofthelargestfamiliesofplantswithaworldwidedistributionandamajorroleinagricultureandinagroforestry.Ahardseedcoatimpermeabletowaterisatypicalfeatureofseveralspecies.Physicaldormancydelaysandreducesgerminationsothatmechanical,physicalandchemicalscarificationmethodshavebeenclassicallyusedtobreakseeddormancyofmanyspecies.WeevaluatetheeffectivenessofamethodologytoscarifyseedsofseveralwoodyFabaceaeofecologicalandeconomicalimportance,includingRobiniapseudoacaciaandAcaciadealbataandtheshrubsCytisusscoparius,C.multiflorusandUlexeuropaeus.Wedescribetheoptimizeduseofahandheldrotarytool(HRT),andcompareitseffectivenesswithotherscarificationmethodsreportedtobreakdormancysuchasboilingordryheating.Totalgerminationand/orspeedofgerminationwereenhancedaftertheapplicationoftheHRT,withgerminationpercentagessignificantlyhigherthanthoseachievedbyothermethodsofscarification.Basedonathoroughliteraturereview,amodeofactionfortheHRTissuggestedwhichcouldoperatebybreakingthephysicalandphysiologicaldormancyoftreatedseedsthroughthecombinedactionofcoatabrasionandmoderatetemperatures.Consideringtheseresults,werecommendtheapplicationofthisrapid,effective,low-costandhighlyreproducibleHRTmethodtobreakseeddormancyandenhancegerminationofthesespeciesandotherswithsimilardormancyconstraints.