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1、?1000?中草藥ChineseTraditionalandHerbalDrugs第43卷第5期2012年5月不同處理對魚香草種子萌發(fā)的影響劉建成，龔衛(wèi)華，向芬，楊建湘，符智榮，彭秀梅吉首大學(xué)師范學(xué)院，湖南吉首416000摘要：目的研究魚香草的種子形態(tài)和不同處理對種子萌發(fā)的影響，為魚香草人工栽培種苗培育提供科學(xué)依據(jù)。方法測定種子長寬、千粒質(zhì)量，對種子設(shè)置不同溫度、不同光質(zhì)以及不同濃度的赤霉素（GA3）和KNO3浸種處理，觀察記錄種子發(fā)芽數(shù)，計(jì)算發(fā)芽率、發(fā)芽指數(shù)和活力指數(shù)。結(jié)果魚香草種子橢圓形，長（1.77±0.01）mm，寬（1.1
2、3±0.01）mm，千粒質(zhì)量（1175.5±21.02）mg，吸水量為其風(fēng)干種子質(zhì)量的8.8倍；種子發(fā)芽最適宜溫度為30℃；白色光照最有利于種子萌發(fā)，全黑暗最不利于種子萌發(fā)；GA3、0.25%KNO3浸種可顯著提高種子發(fā)芽率、發(fā)芽指數(shù)及活力指數(shù)。結(jié)論得到魚香草種子萌發(fā)最適宜的處理?xiàng)l件，對魚香草人工栽培種苗培育具有重要指導(dǎo)作用。關(guān)鍵詞：魚香草；種子；萌發(fā)；光質(zhì)；赤霉素中圖分類號：R282.23文獻(xiàn)標(biāo)志碼：A文章編號：0253-2670(2012)05-1000-03Effectsofdifferenttreatmentsonseedg
3、erminationofMentharotundifoliaLIUJian-cheng,GONGWei-hua,XIANGFen,YANGJian-xiang,FUZhi-rong,PENGXiu-meiNormalCollegeofJishouUniversity,Jishou416000,ChinaAbstract:ObjectiveToevaluatetheseedmorphologyofMentharotundifoliaandtheeffectofdifferenttreatmentsonseedgermination,a
4、ndtoprovideascientificbasisforseedingandartificialcultivationofM.rotundifolia.MethodsLengthandwidthforseedandweightofonethousandseedsweremeasuredandseedgerminationpercentageswererecordedandanalyzedstatistically,throughsettingconditionsincludingdifferentculturetemperatu
5、res,differentlightqualities,andsoakingtreatmentwithdifferentconcentrationofGA3/KNO3.ResultsTheseedmorphologyinM.rotundifoliaisovalwith(1.77±0.01)mmoflengthand(1.13±0.01)mmofwidth.Theweightofonethousandseedsis(1175.5±21.02)mgandtheweightafterseedabsorbingwaterisabout8.8
6、timesmorethanseeddryweight.Theoptimaltemperatureis30℃forseedgermination;Seedgerminationcouldbeaffectedunderdifferentlightqualitiesandfulldarknessconditions.Whitelightwasthemostconductivetoseedgermination,butfulldarknesswastheleastconductive.AftersoakingtreatmentwithGA3
7、/0.25%KNO3,notonlyseedgerminationpercentagecouldbesignificantlypromoted,butalsogerminationindexandvigorindexwereaffected.ConclusionThesuitableconditionforseedgerminationinM.rotundifoliaisgainedthroughthisresearch,whichwillprovideimportantguidingreferenceforseedingandar
8、tificialcultivationofM.rotundifolia.Keywords:Mentharotundifolia(L.)Huds.;seed;germination;lightquality;GA3魚香草為唇形科植物圓葉
