QTL mapping of above-ground adventitious roots during flooding in maize x teosinte "Zea nicaraguensis" backcross population
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概要
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Quantitative trait locus (QTL) analyses were performed to map the genes controlling adventitious root formation on the soil surface (ARF-SS) under flooding conditions in seedlings of 317 BC3F1 individuals derived from a cross between elite maize Mi29 x teosinte Zea nicaraguensis. An SSR-based linkage map was developed using 94 markers, covering 896.3 cM of the ten chromosomes. The ability of ARF-SS under flooding conditions showed continuous variation in the BC3F1 population. By single point regression and interval mapping analyses, the QTLs for ARF-SS were located on chromosomes 3 (bin 3.04), 7 (bin 7.04) and 8 (bin 8.03). Alleles of Z. nicaraguensis, which has a high ability of ARF-SS, increased the level of ARF-SS for all the QTLs. By comparing chromosome positions of ARF-SS loci to previously reported loci, the region on chromosome 3 was shown to be unique to this teosinte. A possible application of the new QTL to breed flooding tolerant maize is discussed.
著者
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Mano Yoshiro
National Institute of Agrobiological Sciences (NIAS)
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Omori Fumie
National Institute of Livestock and Grassland Science
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Bird Robert
Department of Crop Science, North Carolina State University.
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Mano Yoshiro
National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO).
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Loaisiga Carlos
REGEN-FAGRO, Universidad Nacional Agraria.
関連論文
- Construction of a High-density AFLP and SSR Map Using Recombinant Inbred Lines of Cultivated×Weedy Soybean
- Identification of QTL Controlling Flooding Tolerance in Reducing Soil Conditions in Maize (Zea mays L.) Seedlings(Genetic Resources Evaluation)
- QTL Mapping of Adventitious Root Formation under Flooding Conditions in Tropical Maize (Zea mays L.) Seedlings
- QTL mapping of above-ground adventitious roots during flooding in maize x teosinte "Zea nicaraguensis" backcross population