Propagation studies in Madhunashini (Gymnema sylvestre R. Br.) under shade house and shaded poly tunnel condition

Abstract

The experiment was carried out at Medicinal and Aromatic Plants Unit, Saidapur farm, Department of Horticulture, University of Agricultural Sciences, Dharwad, Karnataka to study the effect of different growth regulator treatments on growth and root parameters under shade house (50%) and shaded (with 50% shade) poly tunnel condition in madhunashini (Gymnema sylvestre R. Br.) during the year 2014-15 and 2015-16. Terminal cuttings of madhunashini were treated with different concentrations of IBA (500 and 1000 ppm), NAA (500 and 1000 ppm), coconut water and cow urine and were placed under two environments viz., shade house (50%) and shaded (with 50% shade) poly tunnel condition. The experiment was conducted for two years and pooled data was presented herewith. The poly tunnels placed under shade house (50%) in combination with 500 ppm IBA was found suitable for getting higher per cent rooting (64.78 %), number of roots per cutting (8.26) and length of the longest root (17.35 cm). Use of low cost poly tunnel in combination with IBA 500 ppm treatment to cuttings is more practical and economic technique for commercial multiplication.