Effect of some growth regulators on rooting of carnation (Dianthus caryophyllus L.) under in vitro conditions

In vitro investigations to study the effect of some growth regulators viz., NAA, IAA and IBA on the rooting of carnation shootlets revealed that IBA @ 0.5 mg L−1 significantly influenced all the parameters studied. Maximum rooting (90.66%), number of roots formed (4.70 explant−1) and root length (1.47 cm explant−1) was achieved in shootlets cultured in MS medium supplemented with 0.5 mg L−1 IBA.