Morphological Characterization Induced by Physical and Chemical Mutagens on Tuberose (Polianthes Tuberosa L.) CV Swarna Rekha

Abstract

Every crop must have genetic variation in order to be improved. The most effective technique for quickly increasing crop genetic variety has been shown to be mutation breeding. The present investigation entitled title “Morphological characterization induced by physical and chemical Mutagens on Tuberose (Polianthes tuberosa L.) cv. Swarna Rekha” was carried and conducted at open field condition, Horticulture Research Centre (HRC), at Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut U.P India during Rabi season of 2023-2024. Tuberose cv. Swarna Rekha was optimized 15 treatments under 03 replication procedured under Randomized block design (RBD) with Spacing (30 x 30) cm accommodating gross area 26m x 10 m = 260 m2. To induce variation, gamma rays ranging from (10 Gy to 40 Gy), Ethyl methane sulfonate (EMS) ranging from (0.25% to 1%) and Methyl methanesulfonate (MMS) ranging from (0.01% to 0.04%). All the treatments were included of untreated check plot. To induce variation different radiations were exposed on bulbs and were sown to assess the morphological characterization in first generation. For morphological characterization physical (gamma rays) exposure with lower dose reported to produce and found to be simulative, while higher dose had inhibitory effect on most of the morphological and yield characters. Moreover, Ethyl methanesulfonate (EMS) and Methyl methanesulfonate (MMS) also expressed and induced the changein different morphological and yield characters. From the present study it has found that physicalmutagen viz., gamma irradiation levels (10-20) Gy and EMS at (0.25-0.50%) and MMS at (0.02-0.03%) were found optimal for mutation induction in Tuberose cv. Swarna Rekha