Selection of mutant short stem M5 from 200 Gy gamma ray irradiation on Mentik Susu rice

Abstract

Abstract Mentik Susu rice is one of Indonesian local rice variety that is less attractive to farmers because of its high stems and low yield. One method of using physical mutagen is gamma ray radiation. The purpose of this research is observing the performance of mutated M5 generation of mentik susu rice which already irradiated with 200 Gy gamma ray and selecting the short-stemmed ones which have high productivity. The research was conducted in Novermber 2018-April 2019 on Palur Village, Mojolaban, Sukoharjo Regency. The experiment was done by planting 35 individual M5 and control seeds. The variables observed were plant height, harvest age, number of productive tillers, panicle intensity index, seed yield per plant. Data were analyzed descriptively and compared the performance of mentik susu rice M5 with control via T test analysis. The results showed that there was a difference in the performance of the M5 mutants of mentik susu rice as result of 200 Gy gamma ray irradiation compared to control mentik susu rice. There are 22 selected mutant plant individuals in the M-MS2-G15T3-5-2(18,25,16,8)strains; M-MS2-G15T3-4-15(10)strains; M-MS2-G15T3-2-5(56,18,9)strains; M-MS2-G18T7-4-4(11)strains; M-MS2-G18T7-4-12(15,13,18)strains; M-MS2-G17T17-13-9(23,21,29)strains; M-MS2-G18T7-4-9(17,12)strains; M-MS2-G15T3-2-18(35)strains; M-MS2-G15T3-2-14(28,61,36)strains; and M-MS2-G18T3-6-13(35)strains.