Effect of Pre-sowing Seed Treatments on Germination of Jackfruit (Artocarpus heterophyllus Lam.).

摘要

Laboratory experiment was conducted to know the effect of pre-sowing treatments on germination and growth of jackfruit seedlings at Horticultural College and Research Institute, Venkataramannagudem during 2010-2011. Seeds were soaked in gibberellic acid (GA3) at 100 ppm and 200 ppm; NAA at 25 ppm and 50 ppm ; KN03at 0.25% and 0.5% and water for a period of 12 hours and 24 hours. All treatments promoted significantly earlier germination when compared to control. Among the growth regulators studied, the seeds pre-treated with gibberellic acid (GA3) 200 ppm for 24 hours recorded significantly higher germination per cent (77.77%), lower number of days taken for germination (4.00 days), completion of 50% germination (11.00 days), maximum seedling length(72.11 cm) and higher internodal length (4.66 cm) compared to other growth regulators.