Effect of Etiolation and Growth Regulators on Air-Layering of Jackfruit (Artocarpus Heterophyllus Lam.)

In air-layering of jackfruit, the highest percentage (100.00) of rooting and establishment (91.66) was obtained when the etiolated shoots were treated with 10,000 ppm of IBA, during the month of September. Etiolated shoots also produced significantly more primary roots than non-etiolated shoots after treatment with IBA or NAA or IBA + NAA. Etiolated shoots without the application of growth regulator gave only 12.5 per cent rooting. Non etiolated shoots did not root.