Vol. 12, Issue 9 (2023)

Author(s):
Harshpreet Singh and Dr. Jujhar Singh

Abstract:
The present research ‘‘Studies on Effect of gamma irradiation on Tuberose (Polianthes tuberosa L.) var. Mexican Single’’ was carried out at Experimental Farm, Department of Agriculture, Mata Gujri College, Fatehgarh Sahib, Punjab during summer season 2022-2023. The experiment was laid out in randomized block design with seven treatments such as no- gamma irradiation, 7 gy, 14 gy, 21 gy, 28 gy, 35 gy and 42 gy and the treatments were replicated thrice. Results indicated that lower dose of 7 gy of gamma irradiation show positive result on growth of Tuberose variety Mexican single. As the dose of gamma irradiation increases it affect the vegetative characteristics of tuberose. Early bulb sprouting was observed in 7 gy of gamma irradiation. Maximum plant height, plant canopy, maximum number of leaves were recorded in lowest dose (7 gy) of gamma irradiation Flowering characteristics like days to spike initiation and days taken to opening 1st floret was increased with increases doses of gamma irradiation. Early spike initiation, days taken to opening 1st floret, maximum number of florets/spike and maximum number of spikes/plot was recorded in 7gy of gamma irradiation.