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http://dx.doi.org/10.7740/kjcs.2013.58.3.283

Genetic Analysis on Floury Endosperm Characteristics of 'Namil(SA)-flo1', a Japonica Rice Mutant Line  

Mo, Young-Jun (Rice Research Division, NICS, RDA)
Jeung, Ji-Ung (Rice Research Division, NICS, RDA)
Kang, Kyung-Ho (Rice Research Division, NICS, RDA)
Lee, Jeom-Sig (Rice Research Division, NICS, RDA)
Kim, Bo-Kyeong (Rice Research Division, NICS, RDA)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.58, no.3, 2013 , pp. 283-291 More about this Journal
Abstract
Rice varieties with suitable flour-making quality are required to promote rice processed-food industry and boost rice consumption in Korea. 'Namil (SA)-flo1' is an advanced mutant line with floury endosperm which shows good flour-making quality under dry-milling process. Genetic analysis was carried out to localize the chromosomal region responsible for the floury endosperm of 'Namil (SA)- flo1'. By using 94 F2 progenies, which were derived from 'Namil (SA)-flo1' ${\times}$ 'Milyang 23', floury grains percentage was investigated as phenotypic data, and genotyping was conducted with 54 SSR markers. Association analysis showed that the target genetic region for floury endosperm is on middle-low region of chromosome 5. Through further association analysis with increased number of SSR markers on chromosome 5, we found that genotypic variation in RM164 explains 79.7% of the variation in floury grains percentage of F2:3 seeds. The floury endosperm locus was localized on 17.7-20.7 Mbp region of chromosome 5 and will be further analyzed for fine mapping and gene identification.
Keywords
rice; floury endosperm; mutant; sodium azide (SA); genetic locus;
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