Effect of growth hormones on seed germination and growth pattern of Swertia chirayita L.

摘要

The experiment was conducted during April of 2006 and 2007 in Darjeeling, West Bengal, India. Hormonal treatments with GA₃ and IAA at different concentrations of 100, 200, 300, 400 and 500 ppm were taken as essential parameters. Results revealed that GA treatment improved the percentage of germination of S. chirayita compared to IAA treatment. Maximum germination (51.3%) was observed with GA₃ treatment at 500 ppm, which was at par with GA at 400 ppm (44.6%) and was higher than the other treatments. However, for root length, GA₃ at 500 ppm was observed to be best amongst all treatments. Further, the mean plant height was maximum with GA₃ at 500 ppm, but it was significantly at par with GA₃ at 400 ppm and IAA 500 ppm.