Effect of growth regulators on shoot and root formation in Dracaena

摘要

The treatment of nodal cuttings of Dracaena sanderiana virescens and D. deremensis 'Janet Craig' with IBA and NAA increased shoot emergence, rooting and plant production. The treatment with NAA 250 ppm resulted in the maximum mean shoot emergence (64.17%) and establishment of plants (60.83%), irrespective of duration of treatment and varieties. Six hour duration of treatment of nodal cuttings showed maximum mean shoot emergence (45.37%), number of roots (2.67%) and establishment of plants (41.85%), irrespective of growth-regulator treatments and varieties. D. deremensis 'Janet Craig' showed better mean shoot emergence (41.61%), number of roots (2.58%) and establishment of plants (36.67%) in the polythene bags compared with D. sanderiana virescens.