“Wonchubyeo” is a new japonica rice (Oryza sativatute (KAERI) and was released in 2004. In order to select the mutants of Chucheongbyeo with god traits, the seds were ira-diated with 250 Gy gama ray (83.3 rad/min) emited from 60Co in a radiation facility
“Woncheongbyeo” is a new japonica rice (Oryza sativa L.) cultivar developed by mutation techniques from Chu-cheongbyeo. Chucheongbyeo seeds were irradiated with 300 Gy gama ray (83.3 rad/min) emitted from 60Co at a radiation facil-ity of the Korea Atomic