簡介：東北林業(yè)大學碩士學位論文長春花不同生活史型中內(nèi)源抗壞血酸、谷胱甘肽的生理生態(tài)學特征姓名焦琰申請學位級別碩士專業(yè)植物學指導教師祖元剛20060601東北林業(yè)大學碩士學位論文形成不同的生活史型的觀點。關鍵詞長春花；生活史型；抗壞血酸；谷胱甘肽生境

簡介：東北林業(yè)大學碩士學位論文植物內(nèi)源激素在長春花不同生活史型中生理生態(tài)學特征姓名趙曉菊申請學位級別碩士專業(yè)植物學指導教師祖元剛20060601●ABSTRACTABSTRACTTHEENDOGENOUSHORMONESGA3，IAA，ABAANDZROFC日砌AR口N咖“SROSE“SBYELISAANALYSIS，THEECOPHYSIOLOGICALCHARACTERISTICSOFPHYTOHORMONEANDHORMONALBALANCEINDIF艷RENTPLANTLIFECYCLEFORMSOFEMSE“SWERESTUDIEDINTHISP￡IPER．BYDYNAMICCHANGESOFENDOGENOUSHORMONES，WEDISCUSSEDTHEREGULATORYEFFECTOFHORMONE、ANDTHESIGNIFICANCEOFHORMONALBALANCEINDIFFERENTPLANTLIFECYCLEFORMSOFC廠0SP“S．THEPARAMETERSOFTHEVEGETATIVEGROWTH，THECLONALREPRODUCTIONANDTHESEXUALREPRODUCTIONOFTHENATURAL，IERT訂IZABLE，DROLLGHTSTRESSANDPRUNINGSTRESSCONDITIONSWEREANALYZEDBYTHEPRINCIPALCOMPONENTANALYSISPCA，ANDTHE1IFECYCLEFORMSAREDETERMINEBYSCOREPROPORTIONOFPCA．THERESULTSSHOWEDTHATBYCONTRASTWITHNONNALCONDITIONVO．492309SO．390092CO川7599，THELIFECYCLEFORMOFFENILIZABLECONDITIONVO．599322SO39620LCO．004477WASVFORMINTHEMASS，THATOFDROUGHTSTRESSCONDITIONVO．368282SO4581L6CO．173603WASSFORM，ANDTHATOFPRUNINGSTRESSCONDITIONSVO．484328SOCO．5L5672WASCFO咖INTHEMASS．INTHREETYPICALPLANTLIFECYCLEFORMS，THECONTENTOFENDOGENOUSGA3AJLDIAAWEREBOTHHIGHBUTTHATOFABAWASLOWINTHEFENILIZABLECONDITIONVFORM；ANDTHECONTENTOFGA3ANDIAAWEREIOWBUTTHATOFA．BAWASHIGHINDROUGHTSTRESSCONDITIONSF．ORMTHREEENDOGENOUSHONNONESWEREALLVERYHIGHINPRUNINGSTRESSCONDITIONCF．ORM，BECAUSEUNDERTHEHEAVYPRUNINGSTRESSALLENERGYSUPPORTSTOCLONEREPRODUCTION．INNOWERINGDIF．FERENTIATIONTRANSFORMINGFROMVEGETATIVEGROWTHTOSEXUALREPRODUCTION，GA3PLAVEDANINHIBITIONR01EWHILEIAAANDABAPLAYEDAPROMOTIONROLE．UNDER28℃AND40℃，THERATJOSOFENDOGENOUSHORMONESGA3／ABAANDIAA／ABAWEREALLDECLINE，ITSU92ESTEDTHATTHEVEGETATIVEGROWTHWASINHIBITED，ANDTHESEXUALREDRODUCTIONTRANSFORMATIONWASSUITABLEIN40℃THAN28℃．UNDER2AND6I11UMINATIONS，THERATIOSOFENDOGENOUSHORMONESGA3／ABAANDIAA／ABAWEREALLDECREASEWHICHRESTRAJNEDTHEPIANTVEGETATIVEGROWTH．THEDECREASINGTENDENCYOFGA3ANDIAAWASFOUND，A11DABAINCREASEDINEXCISEDDROUGHTSTRESSCONDITION，THISMAVCONTRIBUTETOTRANSFO腫FROMVTOSFOM．THERATIOSOFENDOGENOUSGA3／ABAANDIAA／ABAWEREINCREASEWITHTHETREATMENTOFENDOGENOUSHORMONESRAPIDLYA丘’ECTEDBYTHEEXOGENOUSHORMONEANDDIPINEXOGENOUSGA3，THEDEVEIOPMENTOFPLANTTRENDEDTOVEGETATIVEGRO、VTH，ANDTHERATIOSOFENDOGENOUSGA3／ABAANDIAA／ABAWEREDECLINEWITHDIPPEDINABA，，ITFAVORSTOSEXUALREPRODUCTION．ITCANIMPROVETHEGROWTHOFNODEBYEXOGENOUSGA3ONLEAVES，WHILEIMPROVINGPLANTRESISTANCEANDPROMOTINGABLOOMBYEXOGENOUSABA．KEYWORDSC口F辦以R口NF?！癝，．OSE“S；ENDOGENOUSHORM09ES；PLANTLIF色CYCLEF．ORMS．3．

簡介：華中農(nóng)業(yè)大學碩士學位論文史氏鱘在擁擠脅迫中的應激反應姓名石小濤申請學位級別碩士專業(yè)水生生物學指導教師龍良啟20060601華中農(nóng)業(yè)大學2006屆碩十學位論文各密度組的各血液生化成分水平血糖GLU、直接膽紅索DBILL、總膽紅素TBILL、總蛋白TP、膽固醇CHOL、甘油三酯TRIG、谷草轉(zhuǎn)氨酶AST，谷丙轉(zhuǎn)氨酶ALT、尿素UREA、肌酐CI遭A、堿性磷酸酶AKP、乳酸脫氫酶LDHL均相似，各密度組相比無顯著差異。綜合前面短期和長期擁擠脅迫對鱘魚的影響，在擁擠脅迫第15D時的史氏鱘稚魚部分血液指標與初始值變化顯著，部分指標則對擁擠脅迫不敏感，在長期試驗結(jié)束時60D所有的指標均無顯著差異，呈現(xiàn)恢復的趨勢，各成分的代謝達到了某種動態(tài)平衡，進而我們推論擁擠脅迫對史氏鱘稚魚在生長上的抑制可能源于魚體在短期內(nèi)的生理平衡被打破。關鍵詞擁擠脅迫；史氏鱘生理；生化；免疫；消化率；攝食率；生長IL

簡介：V113282“吼韙UGZ2Ⅻ妙西貯農(nóng)林釬提大學2007屆攻讀碩士學位研究生學位畢業(yè)論文美洲葡萄CONQUISTER、ALACHUA品種特性研究學科專業(yè)研究方向研究生指導教師完成時間星撾堂董萱董煎蔓疆割塞匠垂硅副夔援ZQQ芏5且中國陜西棲凌STUDYONTHECHARACRIERISTICSOFTHEAM匝R【CANGRAPEVARIETIESCONQUISTERANDALACHUAABSTRACT礦LABRUSCANCVCONQUISTERAND礦ROTUNDIFOLIA以ALACHUA批TWOVARIETIESOFGRAPEINTRODUEODFROMAMERICANSTUDIESWE∞CARRIEDOUTONTHEMORPHOLOGIEAKAGRONOMICANDFRUITCHARACTERISTICS，ASWELLASCUTTINGPROPAGA虹ONHARDINESSANDDISEASERESISTANCEOFCONQUISTERANDALAELAUAATTHES鋤ETIMETHEREGENERATINGSYSTEMOFALAEHUAWASSTUDIED11贍RESULTSSHOWEDTHAT；1THECOLOROFCONQUISTER’SSHOOTSTIPMAUVE；THEMARGILLISLIGLATREDWITH出M∞VILLUSTHECOLOROFYOUNGLEAVESISGLOSSYMAUYCTHESHOOTISSEMIERECTWITHMEDIUMSILKYVILLUSANDTHEINTERNODEISINALLVCTHEMATURESHOOTISFILEMO蛾THEMATLLL℃L∞VESAREMEDIUMEORDIFORMWITLADEEPGREENCOLORTHEPROFILEISFLATWITHSILKYVILLUSONTHEBACK3TO5LOBES；THEUPPA“SINUSES塒DEEPANDOPENWITHAUSHAPEDBASETHELEAFMARGINHASROUNDEDSELTATIONSTHEPETIOLESINUSISAWIDEARCHWITHAVSLAAL，EDBASEANDTHETENDRILISDISCONTINUOLLSANDBIFUREATETHECOLOROFALAEHUASSHOOTTIPISYELLOWGREEN；THEMARGINISLIGHTREDWITHOUTVILLUSTHECOLOROFYOUNGLEAVESISGLOSSYYELLOWGREENTHESHOOTISERECTWITHOUTVILLUSANDTHEINTERNODEISLIGHTGROMTHEMATURESHOOTISELAOEOLATEBROWN謝也SPOTSTHEMATURELEAVES粥EXTREMELYSMALLINRENIFORMWITHDEEPGREENCOLORTHEPROFILEISFLATWITHOUTVILLUSONTHEBACKTHELEAFISENTIREWITHOUTLOBSTHELEAFMARGIHASPOINTEDSCITATIONTHEPETIOLESINUSISAWIDEELLIPSEWITHAVSHAPEDBASEANDTHETENDRILISDISCONTINUOUSANDNONBIFURCATE2CONQUISTERCUTTINGSROOTEDEASILYBYCUTTINGPROPAGATIONTLAEROOTINGRATEWALT92O％BYEHIMONOPHILOUSSHOOTSANDW勰965％BYVEGETATIVESHOOTSALAEHUACUTTINGSROOTEDWITHDITTIEULTILYBYCUTTINGPROPAGATIONTHEROOTINGRATEWAS23％BYEHIMONOPHILOUSSHOOTSAND431％BYVEGETATIVESHOOTS3THEAROMAOFCONQUISTERⅥ惜STRONGANDCOMPLEXCLUSTERSWE犯TIGHTINBERRYDEMITYAVERAGING220OGAVERAGINGSIZCIS183EMCONICALBERRIESWMMEDIUMITI7她AVAAGING2649THEB硎囂WEREROUNDBLUEBLACKANDHADBURSASTHEBERRYBLOOMWASMEDIUMSIZEDTHEJUICEYIELDIS722％ANDTHECOLOROFTHEJUICEW私LIGHTREDTHESOLUBLESOFIDWAS162％REDUCINGSUGARW笛154EELTOTALACIDITYWAS829／LANDTANNINEONEEATRATIONWAS2OOG／LTLAEBERRYHADTWOTOFOURSEEDS4CONQUISTERHADSTRONGGROWTHPOTENTIALTHERATEOFBUDBREAKW勰952％THERATEOF

簡介：⑧國SLCH。竺【G黼燕。量碩I學位論文鎘污染和鹽漬化對美洲黑楊雌雄植株生長和生理的影響指導教師學科專業(yè)研究方向譚靈杰四川成都2017年5月刪9一?Ⅲ叫8墮崢㈣孫IL妊黧蘭蘭本論文所涉及的研究成果得到如下課題資助◆國家自然科學基金31300513

簡介：東北林業(yè)大學碩士學位論文樟子松人工群落生活史型及其譜特征研究姓名王宇申請學位級別碩士專業(yè)植物學指導教師祖元剛王文杰20070601ABSTRACTTHEARTIFICIALCOMMUNITYOFPINUSSVLVESTRIS“CAR．MONGOLICAINTHEBOTANICALGARDENOFNORTHEASTFORESTRYUNIVERSITYWASSTUDIED，ANDTHEPLANTLIFECYCLEFORMOFDIFFERENTPLANTSFROMTHISCOMMUNITYINCLUDINGPINUSSVLVESTRISVAR．MONGOLICA，PICEAMEYERI，ACERNEGUNDO，AMORPHAFMTICOSA，RINGARETICULATE，SPWAEATRICHOCARPA，RUBUSCRATAEGIFOLIUS，TAXUSCUSPIDATACARDUUSCRISPUS，BRYLKINIACAUDATE，CHELIDONIUMMAJUS，LNULALINEARIIFOLIA,LAGOPSISSUPINEANDCAPSELLABURSAPASTORISWCRECLASSIFIEDBYPCAMETHOD．BASEDONTHISMATHEMATICALCLASSIFICATION，THESUCCESSIONSTATUSANDHEALTHCONDITIONOFTHISCOMMUNITYWEREASSESSED．FORTHECANOPYLAYERPLANTSP／NUSSVLVESTRISVAT．MONGOLICAANDPICEAMEYERO，THEVEGETATIVEGROWTHVACCOUNTEDFOR46％，THESEXUALREPRODUCTIONSACCOUNTEDFOR35％，WHILETHECLONEREPRODUCTIONCACCOUNTEDFOR19％；SUCCESSIONLAYERPLANTS似CERNEGUNDO，AMORPHAFRUTICOSA，SYRINGARETICULATE，SPIRAEA護ICHOCARPA,RUBUSCRATAEGIFOLIUSANDTAXUSCUSPIDATA,VACCOUNTEDFOROVER50％，ANDCACCOUNTEDFORALITTLEHIGHERTHANTHES；HERBACEOUSLAYERPLANTSCARDUUSCRISPUS，BRYLKINIACAUDATE，CHELIDONIUMMAJUS，INULALINEARIIFOLIA,LAGOPS毋SUPINEANDCAPSELLABURSAPASTORIS，VACCOUNTEDFORNEARLY47％，WHICHWASONLY4％HIGHERTHANTHATOFS，WHILECONLYACCOUNTEDFOR1L％．THESEFINDINGSSHOWEDTHEANTLIFECYCLEFORMOFCANOPYLAYERPLANTSANDHERBACEOUSLAYERPLANTSWEREVSTRANSITIONTYPEWITHVFORMASTHEMAINTYPE，WHILETHESUCCESSIONLAYERPLANTSWASVFORM．ATTHEVIEWPOIMOFCOMMUNITY,THELIFECYCLEFORMCAPLBEDESCRIBEDASV0．49S033CO18，ATYPICALVSTRANSITIONTYPE，WHICHINDICATESTHATMOSTOFTHESPECIESSTUDIEDINTHISCOMMUNITYALEINAHEALTHYSTATUSWITHTHEVFORM，MOREOVER,THERELATIVEHIGLL33蚴PERCENTAGEINTHESFORMINDICATESTHATTHECOMMUNITYALSOTENDSTOSEXUALREPRODUCTION,BUTITWILLBESTEADYWITHINAPERIODOFTIME．KEYWORDSPINUSSVLVESTRISVAR．MONGOLICA；COMMUNITY；SPECTRUMOFPLANTLIFECYCLEFORM；PLANTLIFECYCLEFORM；COMMUNITYSUCCESSION．Ⅱ．

簡介：分類號Q969密級______________ＵＤＣ____________單位代碼______________碩士學位論文碩士學位論文論文題目食用菌新害蟲泰納異蚤蠅生活史及發(fā)生規(guī)律研究學號_________________________作者_________________________學科名稱_________________________2017年01月05日公開11035食用菌新害蟲泰納異蚤蠅生活史及發(fā)生規(guī)律研究高波嶺生物學140710000007高波嶺AMASTER’STHESISINBIOLOGYCIDATEGAOBOLINGSUPERVISPROFESSLIUGUANGCHUNCOLLEGEOFLIFESCIENCEBIOENGINEERINGSHENYANGUNIVERSITYJANUARY052017BIOLOGICALACTERISTICSOCCURRENCEPATTERNOFTHENEWRECDEDMUSHROOMPESTMEGASELIATAMILNADUENSISDISNEY

簡介：首都師范大學碩士學位論文美洲商陸抗病毒蛋白突變體表達載體的構(gòu)建及農(nóng)桿菌轉(zhuǎn)化水稻的初步研究姓名鄧召花申請學位級別碩士專業(yè)生物化學及分子生物學指導教師張飛云20070410首都師范人學碩上學位論立CONSTRUCTIONOFPLANTEXPRESSIONVECTORWITHMUTATIONGENEOFPOKEWEEDANTIVIRALPROTEINANDTHESTUDYOFITSGENETICTRANSFORMATIOILINRICEABSTRACTVIRALDISEASEWHICHINFLUENCESTHEOUTPUTANDQUALITYOFRICEISASERIOSPROBLEMINPROVISIONMENTTRANDITIONALAPPROACHESLIKECROPDUSTINGTODEFENDTHISDESEASESHALLMAKEENVIRONMENTALPOLLUTINGATPRESENT，CULTIVATINGVIRUSRESISTANTRICEBYGENETICENGINEERINGISONEOFTHEMETHONDTOSOLVETHISCONTRADICTIONPOKEWEEDANTIVIRALPROTEIN隊PFROMTHESPRINGLEAVESOF只砂TOLACCAAMERICANA工ISNATURALLYOCCURRINGRNADEPURINATINGENZYNLEWITHBROADSPECTRUMANTIVIRALACTIVITYTHEREARENUMEROUSREPORTSOFMATUREPAPANDMUTATIONSCONFERRINGSOMELEVELOFVIRALDISEASERESISTENCEWHENTRANSFORMEDINTOPARTICULARPLANTSANDINSOMECLINICALCASEPAPHAVETOBEFOUNDEFFECTIVETOANIMALVIRUSINCLUDINGHIVPAPHASBECOMEANIMPORTANTAGENTINAGRICULTUREANDMEDICINETHENATIVEFULLLENTHPAPGENECODESFOR313AMINOSACIDSHOWEVERDURINGPOSTTRANSLATIONALMODIFICATION，22ANIMOACIDSSINGALPEPTIDCFROMTHENTERMINUSAND29ANIMOACIDSFROMTHECTERMINUSARECLEAVEDLEAVINGAMATUREPAPOF262AMINOACIDSTHECTERMINALDELETIONMUTANT，PAPE，WHICHLOSES25AMINOACIDSNEARCTERMINUSCOMPARINGTOTHEMATUREPAPHASLOWERCYTOTOCITYANDSHOWSRISISTENCETOVIRUSANDTHESE25AMINOACIDSARENECESSARYFORTOXICITYBUTNOTFORANTIVIRATACTIVITYANOTHERMUTATIONPAPY，REPLACINGTYR123WITHALAY123ACAUSESLOWERLEVELOFDEPURINATIONANDCYTOTOXICITYBUTRETAINSANTIVIRALACTIVITYTHISNONTOXICMUTATIONALSOACCUMULATEDSTABLELEVELSOFPROTEINTRANSFORMANTSANDSHOWEDRISISTENCETOVIRUSINVITROINTHEEXPERIMENTTHEFULLCODESEQUENCEOFPAPCDNAGENEWASCLONEDBYRTPCRFROMTHESPRINGLEAVESOFTHE尸砂TOLACCAAMERICANALTHEN，THEMATURE隊PANDTHETWONONTOXICMUTATIONSCLONDEDBYPCRUSINGDELETIONMETHODANDSITEDIRECTEDMUTAGENESISTHEIPTGINDUCIBLEEXPRESSIONVECTORCONTAININGTHEPAPGENESWASCONSTRUCTEDANDTRANSFORMEDIV

簡介：蘭州大學碩士學位論文青藏高原東部高寒草甸4種常見毛茛科植物生活史對策的研究姓名樊寶麗申請學位級別碩士專業(yè)草業(yè)科學指導教師杜國禎20080601蘭州大學碩士學位論文樊寶麗青藏高原東部高寒草甸4種常見毛茛科植物生活史對策的研究置效應的影響，這與其親代的研究結(jié)果一致；去除雄蕊后，種子生產(chǎn)也并未增加，這表明露蕊烏頭的雌雄功能間并不存在權(quán)衡關系。5對訪花者的吸引結(jié)構(gòu)分別進行去側(cè)萼、去下萼處理后，與對照的相比發(fā)現(xiàn)處理后的種子產(chǎn)量并沒有顯著差異，表明露蕊烏頭中兩個下萼片以及側(cè)萼片的開張不影響熊蜂對其有效的傳粉。去花冠處理后發(fā)現(xiàn)，種子重／果實明顯降低，敗育數(shù)顯著增加，說明露蕊烏頭的花部外觀形態(tài)是吸引熊蜂訪花的主要結(jié)構(gòu)。關鍵詞高寒草甸；位置效應海拔；個體大小依賴繁殖性狀；繁殖分配；性分配IV

簡介：青島農(nóng)業(yè)大學碩士學位論文歐洲型與美洲型PRRSV特異N蛋白表位基因表達及ELISA抗體檢測方法的建立姓名叢曉燕申請學位級別碩士專業(yè)預防獸醫(yī)學指導教師王金寶20070601EXPRESSIONOFTHESPECIFICNPROTEINEPITOPESGENEOFEUROPEANANDNORTHAMERICANPRRSVANDDEVELOPMENTOFELISAFORDETECTIONOFANTIBODIESABSTRACTPORCINEREPRODUCTIVEANDRESPIRATORYSYNDROMEPRRSISALLINFECTIOUSDISEASE，WHICHISCAUSEDBYPORCINEREPRODUCTIVEANDRESPIRATORYSYNDROMEVIRUSPRRSVTWOTYPEOFPORCINEREPRODUCTIVEANDRESPIRATORYSYNDROMEVIRUSHAVEBEENREPORTED，THEEUROPEANTYPEEUPRRSVANDTHENORTHAMERICANTYPEUSPRRSVANINDIRECTELISAWEREDEVELOPEDFORSIMULTANEOUSDETECTIONANDDIFFERENTIATIONOFSENLLL】ANTIBODIESDIRECTEDAGAINSTEITHEROFTHETWOPRRSVTYPESTHEPRRSELISAISBASEONAFFINITYPURIFIEDRECOMBINANTNUCLEOCAPSIDPROTEINEXPRESSEDINESCHERICHIACOLL1NORTHAMERICANANDEUROPEANPRRSVRECOMBINANTPLASMIDPGEX一6PINANDPQE30NWEIECONSTRUCTEDANDUANSFECTEDINTOTHEBL21DE3ANDM15THERECOMBINANTFUSIONPROTEINGSTNANDHISNWEREHI曲LYEXPRESSEDEXPRESSIONOFRECOMBINANTPROTEININECOLIWASINDUCEDBYIPTGATAFINALCONCENTRATIONOFLMMFOR5HOURSTHEPROTEINEXPRESSEDCOULDREACTWITHPOLYCLONALANTIBODYAGAINSTANTIBODIESAGAINSTUSANDEUPRRSVSSEPARATELYBYWESTERNBLOT，SHARINGAGOODANTIGENCITY2ANINDIRECTALZYME。LINKEDIMMUNOSORBENTASSAYELISABASEDONAFFINITYPURIFIEDRECOMBINANTPROTEINWASDEVELOPEDUSINGTHEPURIFIEDRECOMBINANTPROTEINASCOATINGANTIGEN，THEOPTIMALCONDITIONSINCLUDINGTHECOATINGCONCENTRATIONOFTHEPROTEINSDTLMSAMPLEDILUTIODETC，WEREDETERMINEDFORTHEELISATHERECOMBINANTPROTEINSHOWED00REACTIONWITHANTISERUMTOCLASSICALSWINEFEVERVIRUS，PSEUDORABIESVIRUS，JAPANESEEPIDEMICENCEPHALITISVIRUSB，PORCINECIRCOVURUSVIRUSITWASFOUNDTHATTHECOINCIDENCEOFTHEDEVELOPEDELISAWAS932％ITWASSHOWNTHATTHEELISAWASSPECIFICANDSUITABLEFORLARGE_SCALESEROEPIDEMIOLOGICALINVESTIGATIONFORPORCINEREPRODUCTIVEANDRESPIRATORYSYNDROMEVIRUSINFECTIONKEYWORDSPORCINEREPRODUCTIVEANDRESPIMTORYSYNDROMEVIRUS；THEEPITOPESOFNPROTEIN；THEEUROPEAN懈；THENORTHAMERICANTYPE；PROKARYOTIEEXPRESSION；PURIFICATIONINDIRECTELISA

簡介：STUDYONBIOMASSANDCARBONSTORAGEOFPOPULUSDELTOIDESOFEASTDONGTINGAREABYZOUYIFENATHESISSUBMITTEDINPARTIALSATISFACTIONOFTHEREQUIREMENTSFORTHEDEGREEOFMASTEROFAGRICULTURALEXTENSIONLNFORESTRYSUPERVISORPROFESSORTANGDAISHENGCENTRALSOUTHUNIVERSITYOFFORESTRYANDTECHNOLOGY498SHAOSHANSOUTHROAD，TIANXINDISTRICTCHANGSHAHUNAN410004，RRCHINANOVEMBER，2015摘要以東洞庭湖區(qū)丘陵和灘涂兩種生境的2年生、7年生、11年生、18年生美洲黑楊POUH，S如7，O『C蛔人工林為研究對象，樣方每木檢尺結(jié)合標準木測量法，對美洲黑楊單株各組分、全株林分生物量、碳儲量進行相關分析，建立美洲黑楊單株各組分及全株的數(shù)學模型，得到了模型方程公式。研究成果為洞庭湖區(qū)美洲黑楊人工林種植地選擇、撫育問伐、林分經(jīng)營方式的選擇等提供參考數(shù)據(jù)。主要研究結(jié)論如下東洞庭湖區(qū)美洲黑楊在丘陵和灘涂兩種不同的生境中表現(xiàn)為造林后前2年生長緩慢，27年間進入速生期，11年左右接近成熟，此時是木材最佳利用時期。灘涂人工林林分密度、單株平均胸徑、平均樹高等數(shù)值均高于丘陵人工林林分，說明灘涂地更適宜于美洲黑楊，在洞庭湖區(qū)灘涂種植美洲黑楊的實際生產(chǎn)意義和對生態(tài)環(huán)境的貢獻力等方面優(yōu)異于丘陵。美洲黑楊的林分生物量和碳儲量在不同生境均表現(xiàn)為隨著年齡的增長而單調(diào)增長。但不同年齡和生境的增長不盡相同；中齡林時期最快，美洲黑楊灘涂人工林比丘陵人工林增長速度快；不同組分增長速度不一致，樹干最快，樹皮最慢。地下生物量的增長變化表現(xiàn)為主根粗根須根。美洲黑楊及人工林林分總碳儲量的變化趨勢與生物量基本相同，經(jīng)測定發(fā)現(xiàn)，美洲黑楊人工林的單株總碳儲量分別是對應生物量的1／2左右，這一結(jié)果同樣佐證了生物量與碳儲量的關系系數(shù)值接近05這一論點。但不同組分的碳儲量與生物量的關系系數(shù)并不都是接近O5，如，樹葉的含碳率較低，僅有032，而樹干的含碳率達到了O53。關鍵詞美洲黑楊；洞庭湖區(qū)；碳儲量；生物量；模型分析

簡介：簍萎夫?qū)W農(nóng)業(yè)推廣碩士學位論文鰻鱺病原菌感染美洲鰻鱺后的病理觀察PATHOLOGICALOBSERVATIONOFAMERICANEELINFECTEDBYBACTERIALPATHOGENSFROMDISEASEDEELS領域名稱漁些鰻鱺病原菌感染美洲鰻鱺后的病理觀察摘要鰻鱺因味道鮮美，經(jīng)濟價值高，是我國重要的海水養(yǎng)殖品種。上世紀90年代以來，我國養(yǎng)殖鰻鱺細菌性疾病頻發(fā)，給鰻鱺養(yǎng)殖業(yè)帶來了嚴重的經(jīng)濟損失。本研究利用嗜水氣單胞菌、簡達氣單胞菌、遲鈍愛德華氏菌和創(chuàng)傷弧菌分別攻毒感染美洲鰻鱺，采集死亡或瀕死鰻鱺的臟器，通過病理組織切片染色觀察其病理變化。同時采集人工感染簡達氣單胞菌和遲鈍愛德華氏菌的鰻鱺臟器進行超薄切片，通過電鏡染色技術(shù)對臟器的組織與細胞內(nèi)部病理變化進行了觀察，研究結(jié)果為鰻鱺感染4種病原菌的病理診斷及其免疫防治提供依據(jù)。論文內(nèi)容詳述如下1感染嗜水氣單胞菌后美洲鰻鱺注射部位潰瘍，腎小球毛細血管腫脹，腎小囊囊腔狹窄；腎間質(zhì)出血；。腎小管變性崩解。肝臟彌散性出血，肝細胞水腫變圓，空泡變性。脾淋巴細胞明顯減少，白髓幾乎消失；脾炎性水腫；脾間質(zhì)小動脈管壁嚴重水腫增厚。心肌纖維出現(xiàn)不同程度的顆粒變性，變性纖維渾濁腫脹。2簡達氣單胞菌感染后的美洲鰻鱺注射部位潰爛，肝組織發(fā)炎，吞噬細胞浸潤，肝細胞空泡變性。心臟血管擴張形成血栓。脾臟組織造血細胞壞死，脾間質(zhì)動脈管壁水腫增厚。腎臟腎小球解體，大量淋巴細胞浸潤，腎小管崩解。3遲鈍愛德華氏菌感染后的美洲鰻鱺可發(fā)生急性和慢性炎癥。急性炎癥時可見肝組織多發(fā)性壞死灶，周圍可見吞噬細菌的巨噬細胞聚集，肝細胞變性、壞死；慢性感染病魚肝組織大面積高度纖維化，肝細胞壞死，細胞間質(zhì)增寬，間質(zhì)內(nèi)充滿膽汁和單核巨噬細胞，肝臟中央靜脈血管壁擴張。4創(chuàng)傷弧菌感染后的美洲鰻鱺可見心外膜水腫增寬，出現(xiàn)卵圓形“結(jié)節(jié)”。脾臟發(fā)炎，紅髓區(qū)出現(xiàn)大量的淋巴細胞，紅細胞明顯減少。脾臟充血、出血；脾臟實質(zhì)細胞壞死，細胞間質(zhì)增寬?！I臟可見腎小管上皮細胞壞死后崩解，腎小管管腔消失；腎小球變性壞死；腎間質(zhì)增寬、出血，大量紅細胞變性壞死。肝細胞水腫，膽管堵塞，其內(nèi)充滿膽汁；肝細胞嚴重水腫，空泡變性，部分細胞壞死。5遲鈍愛德華氏菌感染鰻鱺后超微病理變化表現(xiàn)為腎小球毛細血管擴張；腎小管上皮細胞腫大。簡達氣單胞菌感染后，鰻鱺腎小管間的造血組織病變明顯，血竇周圍基質(zhì)消失，紅細胞大量壞死；肝組織出血；脾實質(zhì)結(jié)構(gòu)松散，病變嚴重的造血細胞核染色質(zhì)濃縮；心外膜炎，外膜出現(xiàn)大量的纖維素樣贅生物質(zhì)。關鍵詞嗜水氣單胞菌，簡達氣單胞菌，愛德華氏菌，創(chuàng)傷弧菌，美洲鰻鱺，病理變化

簡介：南京林業(yè)大學碩士學位論文美洲黑楊產(chǎn)量相關性狀遺傳變異研究姓名李昌龍申請學位級別碩士專業(yè)林木遺傳育種指導教師潘惠新20070601STUDYONGENETICVARIATIONOFYIELDRELATEDCHARACTERSOFPOPULUSDELTOIDESABSTRACTBASEDONANALYSISOFTHEINVESTIGATEDDATAINSEEDLINGSTAGEAND8YEARTREEOFTHEPOPULUSDELTOIDESCLONES，THISPAPERSTUDIESTHEGENETICVARIATIONOFTHEMAINSEEDLINGSTRAITSASWELLASTHETRAITSOFOLDTREES，ANDTHECORRELATIONOFYIELDRELATEDCHARACTERS，THENDORESEARCHONTHEFORECASTCAPABILITYOFSEEDINGSTAGETRAITSFORTHEGROWTHOFOLDTREES，SOASTOHAVEASCIENTIFICPRINCIPLEFORTHEEARLYSELECTIONTHEMAINRESULTSAREHIGHLIGHTEDASFOLLOWS、1ACCORDINGOFANALYSISOFVARIANCEOFIMPORTANTTRAITSOFTHESEEDLINGSTAGECLONESAND8ATREECLONES，THERESULTSARESHOWNTHATTHEREAREREMARKABLEOREXTREMEVARIATIONSBETWEENTHEDIFFERENTPOPULUSDELTOIDESCLONESHIGHBROADHERITABILITYANDGENETICVARIATIONCOEFFICIENTINSEEDLINGSTAGEPLANTTYPE，SEEDLINGPHOTOSYNTHESISCHARACTERISTICANDPLANTTYPEOFOLDTREE，INDICATETHATTHEREAREENOUGHSPACEFORGENETICBREEDING，ANDGOODGENETICGAINAREGAINEDBYSELECTION2ANNUALGROWTHOFTHESEEDLINGSOFPOPULUSDELTOIDESCLONESSHOW‘‘SLOWTOFASTTOSLOW”SCURVETHEFITEFFECTOFTHEMODELINDICATESDYNAMICGROWTHOFSEEDLINGSTAGECANBEMODELEDWELLBYLOGISTICEQUATIONBASEDONTHEPARAMETERSTT2A一1317／BANDT22A11317／B，ANNUALGROWTHOFTHESEEDLINGSCANBEDIVIDEDINTO3STAGESPREGROWTHPHASE，F(xiàn)ASTGROWTHPHASE，POSTGROWTHPHASETHEDIFFERENCEOFGROWTHRHYTHMOFDIFFERENTCLONESAREOFSIGNIFICANTLY3THEANALYSISOFCORRELATIONINDICATESTHATTHEPLANTTYPETRAITSOFTHESEEDLINGISCORRELATIVEORNEGATIVEWITHTHEGROWTHTRAITSOF8YEARSOLDTREE；SEEDLINGSTAGEPHOTOSYNTHESISRATEISSIGNIFICANTLYOREXTREMELYCORRELATEDWITHTHEYIELDTRAITSOFOLDTREEFA201A2005；THEDYNAMICGROWTHCHARACTERSOFSEEDLINGHEIGHTANDFLOORDIAMETERATSEEDLINGSTAGEARECORRELATEDLITTLEWITHTHEDBHTRAITSOF8YEARSOLDTREE，PERHAPSTHECOUNTERACTINGEACHOTHERBETWEENPOSITIVEANDNEGATIVEEFFECTIVITYOF

簡介：中文摘要美棉的引種、推廣及其影響研究摘要我國是世界上植棉歷史最悠久的國家之一在我國，很早就已經(jīng)有了關于植棉的記載，由這些記載可知，我國已具有2000多年的植棉史棉屬共有四個栽培種，即陸地棉GHIRSUTUM、海島棉GBARBADENSE、亞洲棉GARBOREUM和草棉GHERBACEUM其中，由于亞洲棉在我國栽培歷史長，分布廣，變異類型也多，故在我國習慣上又稱之為“中棉”這四個棉種在我國都曾經(jīng)種植過或正在種植長期以來，我國棉花栽培的主要棉種為亞洲棉和草棉隨著機器紡織業(yè)的發(fā)展，世界紡織業(yè)對棉花品質(zhì)提出了新的要求為了適應世界市場的需要，我國開始引入陸地棉品種來華種植推廣由于陸地棉具有纖維長、韌度強，適合機器紡織等特點，它開始登上我國棉花種植的歷史舞臺，并開始逐步取代我國長期種植的中棉和革棉陸地棉是目前世界上栽培最廣泛的棉種之一，在世界棉花種植中有著舉足輕重的地位由于我國陸地棉品種大都直接或間接引自美國，所以，在我國習慣上稱之為。美棉”本文通過對美棉引種歷史過程的分析研究，認為從1865年陸地棉開始從我國上海引入并開始推廣。至今已有140余年的歷史我國引進、推廣關棉的主要動因是為了改良棉花品質(zhì)以適應近代機器棉紡織工業(yè)的需要總結(jié)起來，美棉種子是由各地政府直接從美國購入或由外國來華傳教士或商人零星帶來，通過海上運輸方式，運迭中國東部港口，再通過陸運方式，轉(zhuǎn)運分發(fā)至內(nèi)陸各省份，逐步推廣傳播開來的伴隨著引種的進程，美棉在我國的推廣也相應經(jīng)歷了三個階段1盲目引種直接推廣；2科學試驗、改良推廣；3引育結(jié)合，大力推廣本文在對美棉引種過程進行總結(jié)的基礎上，結(jié)合前人研究成果，對美棉得以成功引種的原因進行了系統(tǒng)的分析和研究美棉的引種及推廣成功對我國的農(nóng)業(yè)生產(chǎn)乃至整個社會經(jīng)濟產(chǎn)生了深遠而重大的影響一方面，它推動了我國棉花產(chǎn)量的提高，從客觀上刺激了棉農(nóng)的生產(chǎn)積極性，改變了我國棉花的種植結(jié)構(gòu)；另一方面。它從客觀上提高了我國棉花的品質(zhì)，促進了我國紡織工業(yè)的發(fā)展以上兩個方面共同促進了我國國民經(jīng)濟的增長，也在一定程度英文摘要RESEARCHONTHEN門限ODUC’NONANDSPREADOFUPLANDCOTRONANDN’SINFLUENCEINCMNAOURCOUNTRYISOFLONGHISTORYOFPLANTINGCOUONITSONEOFTHEEARLIESTCOUNTRIESOFPLANTINGCOTTONINOURCOUNTRYALOTOFRECORDATIONABOUTCOTTONWEREMADELONGTIMEAGOFROMTHOSERECORDATIONWCCANCOMETOACONCLUSIONWEHADALREADYHADA2000YEARHISTORYOFPLANTINGCOTTONGOSSYPIUMINCLUDESFOURCULTIVATEDSPECIESTHEYWEREONCEPLANTEDINOURCOUNTRYSOMEOFTHEMARESTILLBEINGPLANTEDNO’VINALONGPERIODASIANCOTTONANDCOTTONUSEDTOBETHETWOMAINCULTIVATEDSPECIESINANCIENTCHINAWITHTHEDEVELOPMENTOFTHETEXTILEINDUSTRYBYMACHINE，WORLDTEXTILEINDUSTRYPUTFURWARDANEWREQUESTTOCOTTONQUALITYINORDERTOMEETTHENEWREQUESTTHEGOVERNMENTBEGANTOINTRODUCEUPLANDCOTTONINTOOURCOUNTRYTOPLANTINCOMPARISONWITHTRADITIONALCULTIVATEDSPECIESINCHINAUPLANDCOTTONISOFHIGHERQUALITYHTHATCONDITIONUPLANDCOTTONREPLACEDCHINESETRADIONALSPECIESSTEPBYSTEP。UPLANDCOTTONISONEOFTHEMOSTPOPULARCOTTONSPECIESINTHEPRESENTWORLDANDITISOFGREATIMPORTANCEINTHEWORLDCOTTONINDUSTRYONTHEBASISOFANALYZINGTHEINTRODUCTIONANDSPREADHISTORYOFUPLANDCOTTONTHISARTICLEFIGURESOUTINTHEYEAROF1865，UPLANDCOTTONWASINTRODUCEDINTOOURCOUNTRYINSHANGHAISINCETHATITHADHADAHISTORYOFMORETHAN140YEARSATTHATTIME，THECAUSEOFIN仃ODUCTIONISTOIMPROVECOTTONQUALITYTOMEETTHEREQUESTOFTEXTILEINDUSTRYBYMACHINEINPREMODEMCHINATOSUMMARIZE，THESEEDOFUPLANDCOTTONWASPURCHASEDDIRECTLYFROMAMERICAORBROUGHTBYBOANERGESORFOREIGNMERCHANTSBYWAYOFSEATRANSPORTATIONARRIVEDTHEEASTHABOUROFCHINATHENBYWAYOFLANDTRANSPORTATIONTRANSMITTEDTOOTHERPROVINCESACCOMPANYTHEINTRODUCTIONOFUPLANDCOTTONITSSPREADALSOCAMETHROUGHTHREEPHASES1INTRODUCEBLINDLYSPREADDKECTLY2SPREADONTHEBASISOFSCIENTIFICEXPERIMENTATION3INTEGRATEINTRODUCTIONWITHBREEDINGONTHEBASISOFSUMMERIZINGTHEINTRODUCTIONANDSPREADHISTORYOFUPLANDCOTTONINTEGRATEFORMERSTUDIESTHISANICLEHASALOOKINTOTHECAUSESOFSUCC4SSOFTHEINTRODUCTIONⅢ

簡介：分類號密級S4321≥≥、碩士學位論文⑧單位代碼Q335學號2121魚Q93菌核在稻曲病菌生活史中的作用研究RESEARCHONTHEROLEOFSCLEROTIUMINTHELIFECYCLEOFⅥTLOSICLAVAVIRENSINNATURE菌核在稻曲病菌生活史中的作用研究論文作者簽名殫座緝指導教師簽名論文評閱入1丞囪隱壘遷闥評閱人2丞自隱絲遷因評閱人3丞囪隱壘遷闥答辯委員會主席委員1委員2委員3委員4