Effect of Different Growth Regulators Formulations on the Rooting Potential of Mulberry (<I>Morus alba</I> Linn.)

Abstract

Effect of growth regulator (IBA) was studied in combination with co-factor, sucrose and fungicide (0.2% p-HBA, 2% sucrose, 5% captan) on rooting of branch cuttings collected from three years old healthy fast growing plants in early spring season. The IBA concentration ranged from 0.01% to 0.10% plus each containing 0.2% p-HBA, 2% sucrose and 5% captan. The sprouting and rooting characteristics viz.; per cent rooting, number of leaves per cutting, sprout length, primary root number, primary root length, fresh root weight and dry root weight varied significantly among different treatments. Treatment of cuttings with chemical formulation of 0.02% IBA + 0.2% p-HBA + 2% sucrose + 5% captan maximized rooting (96.05%), number of leaves per cutting (7.46), primary root number (12.56), primary root length (7.91 cm), fresh root weight (8.62 g) and dry root weight (5.64 g). Significant coefficients of correlation were found among different character pairs which were straight forward.