The Effects of IBA on the Rooting of Hydroponically Cultured Cymbidium longibracteatum Plants
Young Cymbidium longibracteatum plants were treated with indole butyric acid (IBA) at 0 ,10 , 20 ,40 ,60 and 80 mg/L for 2 h and then cultured in the nutrition solution .Determinations were made at 20-day intervals of the morphological and physiological indicators ,including plant height ,plant weight and root number ,and chlorophyll content and catalase activity .The results showed that IBA of different con-centrations promoted the root grow th of the hydroponic C. longibracteatum plants ,the concentration of 10 ,20 and 40 mg/L giving the best results ;and that chlorophyll content and catalase activity were the highest in the 10 mg/L and 20 mg/L treatments ,respectively ,in the adventitious root formation period .
NETL
NSTL
万方数据
