Growth Response of Labuhanbatu Local Rice with Gamma Ray Irradiation in M1 Generation

Abstract

Rice (Oryza sativa L.) is an important cereal crop for human nutrition. Labuhanbatu Regency is one of the regencies in North Sumatra Province with a local type of rice, namely Ramos local variety rice. It usually adapts well to a specific environment where it grows larger, having a pleasing aroma and eating quality, but it has weaknesses such as very long growth duration, susceptibility to lodging, unresponsive to fertilizer, and low yield. The induction of gamma-ray irradiation on Ramos is expected to increase diversity. This study aimed to determine the growth response of Labuhanbatu Local Rice with Gamma Ray Irradiation in M1 Generation. The research was conducted in PAIR BATAN and Labuhanbatu University Agrotechnology Experimental from May 2021 to September 2021. This study used a non-factorial randomized block design with three replications. The doses used were 0 (control), 150 Gy, 200 Gy, 250 Gy and 300 Gy. Parameters observed were the plant height and the number of tillers on the M1 population. Data analysis showed that gamma irradiation was significantly different from the plant height. Irradiation caused a marked decrease in the 300 Gy irradiation treatment.