ايجاد لاين هاي مقاوم به خوابيدگي و پرمحصول در برنج به روش القاي موتاسيون به وسيله پرتودهي گاما (موتاسيون زاي فيزيكي )

Evolving of mutant lines resistant to lodging, blast, and high yield in rice by induce mutation using Gamma ray (physical mutagen)

Induction of mutation for the purpose of producing variations in the gene pool has been used in recent years. In this experiment the locally adapted rice CV. Moosa-Tarom was used as a high quality, tall and very lodging susceptible mutation material. The main purpose of this project was to evolve lodging resistant mutants of high yielding. The elite seeds of Mossa-Tarom variety after moisture regulation were exposed to 100, 200 and 300 Gy from 60Co source at the Nuclear Research Center. The irradiated seeds were sown in the field along with a comparable number of unirradiated seeds taken as control. All the first panicles of M1 plants were individually harvested and classified according to the dose rate as M2 material. Among M2 plant populations 203 plants that appeared from the agronomic point of view, along with a number of on unirradiated seeds, were selected and moved to the next generations. During subsequent screening for three generations (M3-M5) and due to lodging resistant, height and efficient factors of yield potential some mutant lines were harvested. From these lines in a preliminary and advanced randomized complete design agronomic traits, 13 promising lines were selected. From the experiment, line 43-3 were confirmed, which is characterized by lodging resistant and high yield. This line showed relative superiority and introduced to Rice Research Institute.