Mutation breeding
Ghorban Ali Nematzadeh; Morteza Oladi; Ammar Afkhami Ghadi; Ammar Gholizadeh Ghara; Farhad Bagheri; Mojtaba Aghajani; Maryam Emami Ghara; Alireza Babaei; Masud Rahimi; Camran Mozafari; Reza Vojdan; Amir Ziaee; Ahmad Esfandiyari
Abstract
Mutation breeding can be a major procedure for plant improvement, and release of high yield, including quality characteristics. A rice mutation breeding program with five verities (local and improved varieties including Sang Tarom, Tarom Chaloci, Nemat, Sepidrood, and Khazar) conducted at GABIT experimental ...
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Mutation breeding can be a major procedure for plant improvement, and release of high yield, including quality characteristics. A rice mutation breeding program with five verities (local and improved varieties including Sang Tarom, Tarom Chaloci, Nemat, Sepidrood, and Khazar) conducted at GABIT experimental field since 2010-2018. Five rice varieties treated with Gama ray at 200 Gray via AEOI , then the segregating generations (M2-M9) cultivated for 7 years and agronomic traits evaluation were done through pedigree method. Finally, eleven M9 pure promising lines selected then planted in Randomized Complete Block Design (RCBD) for further analysis. The results have shown that M9-P10-37-1-1-1-1-1-1-1 line (of Nemat mutrant) with high yield (8.23 ton/ha), early maturity (123.67 days), including good physicochemical quality such as AC=18.4%, GC=98 mm and GT= 5.42 with aromatic scent having fgr genes marker with 257bp length. The yield comparison indicate that the line M9-P10-37-1-1-1-1-1-1-1 has 12.51% comparing to Shiroodi and 47.97% comparing to Tarom Hashemi, with the high quality aromatic scent (the same as local physicochemical characteristics and aromatic scent). This new mutant line registered and introduced as Roshan variety.