Abstract

In the study described, commercially important bamboos and reeds of Kerala, viz. Bambusa arundinacea, Dendrocalamus strictus, Ochlandra travancorica, O. scriptoria, and the introduced species Bambusa balcooa, were successfully propagated vegetativelythrough culm cuttings. The rooting and sprouting responses were significantly enhanced by the application of suitable growth regulators: IAA, IBA, NAA, and coumarin or boric acid were tried. Although some cuttings rooted without growth regulator treatment the development of roots and sprouts was relatively poor in these cases. In all the species culm cuttings extracted and treated during summer months (Feb. to May) gave a better response than in other months. The treatment to obtain maximum rooting and sprouting responses varied with species. IBA or NAA at 100 p.p.m. during Mar. was the most promising treatment for B. arundinacea, while NAA at 100 p.p.m. during Feb.-Mar. was best for D. strictus. The most effective treatment for O. scriptoria was IBA at 100 p.p.m. in Mar. and for O. travancorica NAA at 100 p.p.m. or coumarin at 10 p.p.m. in Apr