Author(s): Md Abdur Rauf, Md Mohimenul Islam, Sadia Tasmin, Bibekananda Hira, Rafiqul Islam, Masudur Rahman, Md Abul Bashar, Mehedi Hasan and M Rafiqul Islam

Abstract: That experiment was carried out to evaluate the effect of various doses of gamma irradiation on growth and yield attributing characters of selected tomato genotypes. Four levels of gamma irradiation viz. 200 Gy, 250 Gy, 300 Gy and Control (without irradiation) from 60Co source were assigned to three genotypes viz. ELTS-100, ELTS-200, and ELTS-300. Results revealed that the gamma irradiation significantly affected on growth and yield attributing characters of three tomato genotypes using Randomized Complete Block Design (RCBD) with three replications. Collected data were subjected to analysis of variance and pertinent means were separated using least significant difference at a 5% level of probability. Gamma irradiations at 200 Gy on ELTS-200 genotype showed the greatest result as a single factor or in combinations. In combinations, ELTS-200 genotype treated with 200 Gy gamma irradiation showed the superior result on plant height (160.13 cm), leaf number per plant (161.60), leaf length (20.30 cm), leaf diameter (20.57 cm), fruit weight per plant (3.95 kg), fruit yield per plot (35.55 kg) and the yield per hectare (88.88 t/ha). In the other hand, ELTS-300 genotype under the control treatment showed the lowest result on all parameters such as, plant height (113.26 cm), number of leaves per plant (122.07), number of branches per plant (20.40), number of flower cluster per plant (22.00), Leaf length (17.26 cm), leaf diameter (17.26 cm), number of fruits per plant (41.87), fruit weight per plant (2.31 kg), fruit yield per plot (20.81 kg) and the yield per hectare (52.02 t/ha). The genotype, ELTS-200 that was treated with 200 Gy irradiation showed outstanding superiority for plant growth and yield attributes.

DOI: 10.22271/27889289.2024.v4.i2c.169

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