Open AccessRadiosensitivity of rice varieties of Mira-1 and Bestari mutants using gamma rays irradiation
Author(s) -
Muhammad Hamzah Solim,
Sherly Rahayu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/911/1/012014
Subject(s) - radiosensitivity , seedling , randomized block design , biology , germination , mutation breeding , horticulture , mutant , irradiation , gamma ray , gamma irradiation , agronomy , genetics , gene , physics , nuclear physics , astrophysics
New rice varieties could be released by various plant breeding methods including mutation induction using gamma rays irradiation. Radiosensitivity and LD50 values (Lethal Dose, 50%) can be determined from the morphological response of plants to irradiation treatment in M 1 generation. The research aims to determine the value of LD 50 and the performance of rice mutant traits of Mira-1 and Bestari. The experiment was conducted using the Randomized Complete Block Design (RCBD) with two factors (rice varieties and gamma irradiation doses) and three replications. The plant traits observed were the percentage of germination, seedling height, and root length in the seedling phase. The results showed that LD 50 values in the Mira-1 and Bestari varieties differed in all observed characters. The optimum dose to induce rice mutation of the varieties under investigation is within the range of 521.40 – 663.68 Gy.