不同处理对鱼香草种子萌发的影响

《不同处理对鱼香草种子萌发的影响》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、•1000•中草药ChineseTraditionalandHerbalDrugs第43卷第5期2012年5月不同处理对鱼香草种子萌发的影响刘建成，龚卫华，向芬，杨建湘，符智荣，彭秀梅吉首大学师范学院，湖南吉首416000摘要：目的研究鱼香草的种子形态和不同处理对种子萌发的影响，为鱼香草人工栽培种苗培育提供科学依据。方法测定种子长宽、千粒质量，对种子设置不同温度、不同光质以及不同浓度的赤霉素（GA3）和KNO3浸种处理，观察记录种子发芽数，计算发芽率、发芽指数和活力指数。结果鱼香草种子椭圆形，长（1.77±0.01）mm，宽（1.1

2、3±0.01）mm，千粒质量（1175.5±21.02）mg，吸水量为其风干种子质量的8.8倍；种子发芽最适宜温度为30℃；白色光照最有利于种子萌发，全黑暗最不利于种子萌发；GA3、0.25%KNO3浸种可显著提高种子发芽率、发芽指数及活力指数。结论得到鱼香草种子萌发最适宜的处理条件，对鱼香草人工栽培种苗培育具有重要指导作用。关键词：鱼香草；种子；萌发；光质；赤霉素中图分类号：R282.23文献标志码：A文章编号：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鱼香草为唇形科植物圆叶