Identification of QTLs for Improvement of Plant Type in Rice (Oryza sativa L.) Using Koshihikari/Kasalath Chromosome Segment Substitution Lines and Backcross Progeny F_2 Population(Genetic Resources Evaluation)

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概要

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• Thirty-nine chromosome segment substitution lines (CSSLs) population derived from a Koshihikari/Kasalath cross was used for quantitative trait locus (QTL) analysis of plant type in rice (Oryza sativa L.). Putative rough QTLs (26.2〜60.3cM of Kasalath chromosomal segments) for culm length, plant height, panicle number, chlorophyll content of flag leaf blade at heading and specific leaf weight, were mapped on the several chromosomal segments based on the comparison of CSSLs with Koshihikari in the field experiment for 3 years. In order to verify and narrow QTLs detected in CSSLs, we conducted QTL analyses using F_2 populations derived from a cross between Koshihikari and target CSSL holding a putative rough QTL. The qPN-2, QTL for panicle number was mapped on chromosome 2. In traits of flag leaf, the qCHL-4-1 and qCHL-4-2 for chlorophyll content was mapped on chromosome 4, and the qSLW-7 for specific leaf weight on chromosome 7. All QTLs were detected in narrow marker intervals, compared with rough QTLs in CSSLs. The qPN-2, qCHL-4-1 and qCHL-4-2 had only additive effect. On the other hand, the qSLW-7 showed over-dominance. It could be emphasized that QTL analysis in the present study with the combination of CSSLs and backcross progeny F_2 population can not only verify the rough QTLs detected in CSSLs but also estimate allelic effects on the QTL.

• 日本作物学会の論文

著者

• KANBE Takashi

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

• SASAKI Haruto

  Field Production Science Center, Graduate School of Agricultural and Life Sciences, The University o

• AOKI Naohiro

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

• YAMAGISHI Tohru

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

• OHSUGI Ryu

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

• Ohsugi Ryu

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo

• Aoki Naohiro

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo

• Sasaki Haruto

  Field Production Science Center Graduate School Of Agricultural And Life Sciences The University Of

• Sasaki Haruto

  Tokyo University

• Kanbe Takashi

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo

• Ohsugi Ryu

  Department Of Agricultural And Environmental Biology Graduate School Of Agricultural And Life Scienc

• Aoki Naohiro

  Department Of Agricultural And Environmental Biology Graduate School Of Agricultural And Life Scienc

• Yamagishi Tohru

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo

• Ebitani Takeshi

  Toyama Agric. Research Center

• Yano Masahiro

  Department of Molecular Genetics, National Institute of Agrobiological Sciences

• Ebitani Takeshi

  Toyama Prefectural Agricultural Forestry And Fisheries Research Center

• Yano Masahiro

  Department Of Electrical & Electronic Engineering Meljo University

• Ohsugi Ryu

  Graduate School Of Agricultural And Life Sciences The Univ. Of Tokyo

• Yano Masahiro

  Qtl Genomics Res. Center National Inst. Of Agrobiological Sciences

• Yano Masahiro

  QTL Genomics Research Center, National Institute of Agrobiological Sciences

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