Mapping of QTLs for floating ability in rice

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概要

• 論文の詳細を見る

• Deepwater rice (floating rice) can survive under flooded conditions because of their floating ability. We conducted genetic analysis to elucidate the genetic control of floating ability by using an F_2 and BC_3F_2 populations derived from a cross between deepwater and non-deepwater rice varieties. Internode elongation is the most important trait responsible for this adaptation, and is characterized by two factors: timing of the initiation of elongation and the rate of elongation. The position of the lowest elongated internode (LEI) and the rate of internode elongation (RIE) were used to measure floating ability. Two QTLs for LEI were detected on chromosomes 3 (qLEI3) and 12 (qLEI12). For RIE, two QTLs were detected on chromosomes 1 (qRIE1) and 12 (qRIE12). We confirmed the genetic effects and map positions of qLEI3, qLEI12 and qRIE12 by using BC_3F_2 populations. Characterization of near-isogenic lines of qLEI3, qLEI12 and qRIE12 revealed that the LEI and RIE are at least partly controlled by different genetic pathways. Observation of near-isogenic lines suggested that the introgressed segment of qLEI12 and qRIE12 of chromosome 12 affected the deepwater-responsive elongation.

• 日本育種学会の論文

著者

• Yasui Hideshi

  Plant Breeding Laboratory Faculty Of Agriculture Graduate School Kyushu University

• YOSHIMURA Atsushi

  Plant Breeding Laboratory, Faculty of Agriculture, Graduate School, Kyushu University

• Yasui Hideshi

  Plant Breeding Lab. Fac. Of Agriculture Graduate School Kyushu Univ.

• Kawano Ritsuko

  Plant Breeding Laboratory, Kyushu University

• Doi Kazuyuki

  Plant Breeding Laboratory, Kyushu University

• Mochizuki Toshihiro

  Laboratory of Agricultural Ecology, Kyushu University

• Yoshimura Atsushi

  Plant Breeding Laboratory Faculty Of Agriculture Kyushu University

• Yoshimura Atsushi

  Plant Breeding Lab. Fac. Of Agriculture Graduate School Kyushu Univ.

• Doi Kazuyuki

  Graduate School Of Bioagricultural Sciences Nagoya Univ.

• Doi Kazuyuki

  Plant Breeding Laboratory Faculty Of Agriculture Kyushu University

• Kawano Ritsuko

  Plant Breeding Laboratory Kyushu University:japan Society For The Promotion Of Science

• Yoshimura A

  Plant Breeding Laboratory Faculty Of Agriculture Graduate School Kyushu University

• Mochizuki Toshihiro

  Laboratory Of Agricultural Ecology Kyushu University

• Doi Kazuyuki

  Plant Breeding Laboratory Faculty Of Agriculture Graduate School Kyushu University

関連論文

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