水浸与赤霉素处理对荆条种子萌发影响研究  

Study on Effect of Water Immersion and Gibberellin Treatments on Seed Germination of Vitex negundo var. heterophylla

作　　者：李义强 宋桂龙[2] 郭宇[3] 

机构地区：[1]北京市京石园林绿化有限公司,北京102600 [2]北京林业大学草坪研究所,北京100083 [3]北京绿之源生态科技有限公司,北京100085

出　　处：《种子》2012年第3期10-13,共4页Seed

基　　金：交通运输部科技项目(编号:2009353311050)"京承高速公路(沙峪沟-市界段)边坡综合防护及治理技术研究";北京市首都公路发展集团科技项目"高速公路岩石边坡绿化养护技术研究";国家林业局林业科学技术推广项目"裸露坡面植被恢复综合技术示范推广"(编号:201131)

摘　　要：研究了水浸时间(1、2、3 d)及水浸处理后再进行0.8‰赤霉素(2、4、6 h)综合处理的方法对提高荆条种子萌发的影响。结果表明:2种处理方式对荆条种子萌发均具有明显促进作用。水浸3 d处理显著提高荆条种子发芽率、发芽势和发芽指数,分别达到70.00%、65.33%和22.01,水浸1 d效果不明显;水浸后再进行赤霉素处理对提高荆条种子的发芽率、发芽势及发芽指数作用明显,尤以发芽率变化最显著,表达发芽活力的发芽势和发芽指数与单纯水浸处理相比变化不明显。综合处理中以水浸2 d后赤霉素处理4 h的荆条种子发芽效果最理想,发芽率达到最高值,为87.33%,且显著高于其他处理及单用赤霉素处理,发芽势达到64.67%,发芽指数达到20.00。Experiments on improving Vitex negundo var.heterophylla seeds germination were carried by different treatment methods,one was water immersion treatment for different days（1,2,3 d）,the other was comprehensive treatment dealing seeds with 0.8‰ gibberellin for different hours（2,4,6 h） after the water immersion for different days（1,2,3 d）.The results indicated that both treatment methods had obvious effect on seeds germination percentage,germinability and germinates index of Vitex negundo var.heterophylla.Water immersion treated for three days,seed germination rate（70.00%）,germinability（65.33%） and germination index（22.01） improved significantly.However,effect of water immersion treatment for one days was not obvious.Comprehensive treatment had significant effects on seeds germination percentage,germinability and germinates index of Vitex negundo var heterophylla,especially in germination rate.Germinability and germination index of comprehensive treatment were not significant compared with water immersion treatment.Comprehensively considered,the method that water immersion for 2 days then disposed by 0.8‰ gibberellin for 4 hours was the best treatment,the germination percentage 87.33%,germinability 64.67% and germinates index 20.00.

关 键 词：荆条 水浸处理 赤霉素 发芽率 发芽势 发芽指数 

分 类 号：S793.7[农业科学—林木遗传育种]