Identification of quantitative trait loci associated with shoot sodium accumulation under low potassium conditions in rice plants(Plant nutrition)
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概要
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Sodium (Na) application has marked beneficial effects on plant growth when the potassium (K) supply is low. Under low K supply, three japonica rice (Oryza sativa L.) cultivars, Koshihikari, Nipponbare, and Sasanishiki, accumulated more Na than three indica cultivars, IR36, IR64, and Kasalath, and the effect of Na application on growth was greater in japonica Koshihikari plants than in indica IR64 plants. A quantitative trait locus (QTL) analysis using a population of backcross inbred lines derived from japonica Koshihikari and indica Kasalath identified two significant loci associated with shoot Na concentration on chromosomes 3 and 6. The quantitative trait locus for shoot Na accumulation on chromosome 6 was confirmed in a population of chromosome segment substitution lines. The major QTL detected in this study could be useful for increasing crop productivity under low K input.
- 2012-12-00
著者
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Matoh Toru
Laboratory Of Plant Nutrition Division Of Applied Life Sciences Graduate School Of Agriculture Kyoto
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Ochiai Kumiko
Laboratory Of Plant Nutrition Division Of Applied Life Sciences Graduate School Of Agriculture Kyoto
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TAKESHITA Saya
Laboratory of Plant Nutrition, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
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MATOH Toru
Laboratory of Plant Nutrition, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
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MIYAMOTO Takuji
Laboratory of Plant Nutrition, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
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OCHIAI Kumiko
Laboratory of Plant Nutrition, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
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