Ecology, Environment and Conservation Paper

Vol. 19 Issue 03, 2013; Page No.(735-738)

CLONAL PROPAGATION THROUGH STEM CUTTINGS AND AIR LAYERING IN TABERNAEMONTANA GAMBLEI SUBRAM. & HENRY (APOCYNACEAE) - AN ENDEMIC SHRUB OF THE SOUTHERN WESTERN GHATS

A. Hussain and R. Remya

Abstract

Tabernaemontana gamblei (Apocynaceae), an important endemic shrub of the southern Western Ghats is found very poor seedling bank in their natural habitats. This will lead to the untimely endangerment of the species in near future. The present study is, therefore, aimed to develop and standardise the macropropagation techniques through stem cuttings and air layering methods with the aid of rooting hormones. Ten year old mother plants have resulted a maximum stem rooting of 70% in the nursery conditions and air layering success of 60% in their natural habitats, by the application of NAA 1000 ppm in both the cases. The plants developed from stem cutting and layering were also survived with 80% success. Thus the standardized clonal propagation method in T. gamblei through stem cuttings and air layering reported for the first time can be taken as an ideal tool for the multiplication and subsequent resource base utilization of the species since the populations are prone to endangerment in its habitats.

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