三种激素对竹柳扦插生根的影响

毛晓霞

摘要： 研究了3 种植物生长激素NAA（α-萘乙酸）、 IAA（吲哚乙酸）和IBA（吲哚丁酸）对竹柳（Salix maizhokung garensis）扦插生根效果的影响。结果表明，单一激素作用时，100 mg/L IBA处理40 min生根效果最佳，生根率达90%；100 mg/L NAA处理40 min生根效果也较好。100 mg/L IBA和100 mg/L NAA混合处理竹柳插条，生根率达93.3%，高于单一激素的作用结果。结果表明，IBA最适合竹柳的扦插繁殖。IBA和NAA的混合液能提高竹柳扦插生根率，IAA对促进竹柳扦插生根的效果不理想。

关键词：竹柳（Salix maizhokung garensis）； 扦插； 激素； 生根率

中图分类号：S792.12 文献标识码：A 文章编号：0439-8114（2013）05-1086-04

Effects of Three Hormones on Cuttage Rooting of Bamboo-Willow

MAO Xiao-xia

（School of Biology Sciences， Anqing Normal University， Anqing 246011，Anhui，China）

Abstract： To study effects of hormones on cuttage rooting of bamboo-willow（Salix maizhokung garensis）， three plant growth hormones， i.e. NAA （α-naphthaleneacetic acid）， IAA （indole acetic acid） and IBA （indole butyric acid） were used to study. Under the effect of a single hormone， the rooting effect treated with 100 mg/L IBA for 40 min was the best， rooting percentage reached 90%； the rooting effect treated with 100 mg/L NAA for 40 min was better. However， the rooting percentage of bamboo-willow treated with the mixture of 100 mg/L IBA and 100 mg/L NAA reached 93.3%， which higher than those treated with a single hormone. Thus， IBA is most suitable for cutting propagation of bamboo-willow. In addition， the mixture of IBA and NAA can improve cutting rooting rate of bamboo-willow， the effect of cutting rooting treated with IAA is not desirable.

Key words： bamboo-willow（Salix maizhokung garensis）； cuttage； hormones； rooting rate