三种激素对竹柳扦插生根的影响

Effects of Three Hormones on Cuttage Rooting of Bamboo-Willow

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(Salixmaizhokung 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/LNAA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。

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.