Studies on Regeneration of Bougainvillea by Stem Cuttings with the aid of Auxins under Intermittent Mist

Abstract

Semi-hardwood cuttings (15 cm length) were taken from vigorous shoots of gamma ray induced mutant of bougainvillea cv Pallavi and Mahara variegata were treated with Indole-3-butyric acid (IBA) and naphthalene acetic acid (NAA) each at 0, 1000, 2000, 3000, 4000 and 5000 ppm by quick dip (10s) method. The cuttings were planted in 6" pots filled with coarse sand and kept under glass roofed mist chamber for rooting. IBA 4000 ppm induced maximum rooting (90.00%) and survival (78.00 to 88.90%) in both the cultivars. This concentration was also helpful in producing greater number of roots and longer root length per rooted cutting than treatments with NAA but thickness of root was not affected by IBA and NAA concentrations.