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Morphological and Progeny Variations in Somaclonal Mutants of 'Ilpum' (Oryza sativa L.)  

Park, Young-Hie (School of Plant Biosciences, Kyungpook National University)
Kim, Tae-Heun (School of Plant Biosciences, Kyungpook National University)
Lee, Hyun-Suk (School of Plant Biosciences, Kyungpook National University)
Kim, Kyung-Min (School of Plant Biosciences, Kyungpook National University)
Sohn, Jae-Keun (School of Plant Biosciences, Kyungpook National University)
Publication Information
Korean Journal of Breeding Science / v.42, no.4, 2010 , pp. 413-418 More about this Journal
Abstract
A total of 424 plants was regenerated from the seed-culture of a rice cultivar, 'Ilpum'. The regenerated plants were grown in a greenhouse. The 297 plants with high fertility were selected among 424 plants. The harvested seeds from each plant were planted to each line at experiment field in 2008 and 2009. The each line was evaluated for the agronomic and morphological traits, also. The 64 lines (21.5%) showed significant differences in agronomic and morphological traits from donor cultivar 'Ilpum' among 297 lines. The heading date different from donor cultivar 'Ilpum' showed highest frequency in 297 lines, and accounts for 9.1% (29 lines). The phenotype of opaque endosperm and rolling leaf account for 1.7% and 1.3% in 297 lines, respectively. The genetic segregation was observed in dwarf/semi-dwarf, rolling leaf and opaque endosperm at $S_1$ generation, but not in $S_2$ generation. These results suggest that the mutant derived from a tissue-culture will be one of the promising genetic resources, due to its wide variation and high frequency of mutation, comparatively.
Keywords
Rice; Genetic segregation; Mutant; Somaclones; Variations;
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