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Studies on factors controlling plant vigor in tomato. An approach to elucidating the eco-physiological properties in horticultural crops

Research Project

Project/Area Number 17380017
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Horticulture/Landscape architecture
Research InstitutionThe University of Tokyo

Principal Investigator

SUGIYAMA Nobuo  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Professor (30012040)

Co-Investigator(Kenkyū-buntansha) NEMOTO Keisuke  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Professor (40211461)
峯 洋子  東京大学, 大学院農学生命科学研究科, 助手 (70282704)
Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥16,390,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2007: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2006: ¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 2005: ¥5,600,000 (Direct Cost: ¥5,600,000)
KeywordsChromosome / Gene / Horticultural Science / QTL analysis
Research Abstract

It is well-known that vigorous vegetative growth hinders reproductive development but the physiological and genetic background of this phenomenon is not clear. In this study, quantitative trait analysis (QTL) analysis was performed to explore the genetic control of flowering time. Backross inbred lines developed from a cross between the commercial cultivar, Solunum lycopersicum and the wild species, S. pimpinellifolium were used as a mapping population. A phenotypic evaluation was done in spring and summer using the 114 BC1F4 families. In chromosome 1, a major DTF (days to flowering) QTL was detected near marker C2_At5g49480, which accounted for about 40% of the phenotypic variation in spring with contributing alleles from S. lycopersicum. However, in summer this QTL was responsible for only 16% of the phenotypic variation, while the DTF QTL in chromosome 3 near marker C2_At5g51110 explained more of the variance. Most of the QTLs were co-located in a single locus in chromosomes 1 and 3, while the other QTLs were sparsely mapped in chromosomes 5, 7 and 10. The DTF QTLs in chromosome 1 were co-located with QTLs for LL (leaf length), LS (number of lateral shoots) and fresh weight (FRW). This locus also corresponds to the same region to which a QTL was previously mapped for DTF, days to emergence and days to third leaf in a BC_1, population. On the other hand, in chromosome 3, the DTF QTL was found to be co-located with QTLs for LN (number of leaves before first inflorescence). Co-localization of DTF and LN QTLs indicates that the same gene/s may be control these traits. These results suggest that the DTF QTLs in chromosomes 1 and 3 probably control the rate of leaf initiation and the period from the vegetative to reproductive stage, respectively.

Report

(4 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (7 results)

All 2008 2007

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (4 results)

  • [Journal Article] Quantitative trait loci controlling flowering time and related traits in a Solanum lycopersicum×S. pimpinellifolium cross2008

    • Author(s)
      Cagas, C.C.
    • Journal Title

      Scientia Horticulturae 116

      Pages: 144-151

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Quantitative trait loci controlling flowering time and related traits in a Solanum lycopersicum×S.pimpinellifolium cross2008

    • Author(s)
      Cagas, C. C., et. al.
    • Journal Title

      Scientia Horticulturae 116(2)

      Pages: 144-151

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Quantitative trait loci controlling flowering time and related traits in a Solanum lycopersicum x S.pimpinellifolium cross2008

    • Author(s)
      Cagas, C.C.
    • Journal Title

      Scientia Horticulturae 116

      Pages: 144-151

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Delay in flowering time of tomato transplants: a possible role for ethylene2008

    • Author(s)
      Sumugat, M.R.
    • Organizer
      園芸学会平成20年度春季大会
    • Place of Presentation
      神奈川県厚木市
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Delay in flowering time of tomato transplants : a possible role for ethylene2008

    • Author(s)
      Sumugat, M. R., et. al.
    • Organizer
      Annual Meeting of the Japanese Society for Horticultural Science
    • Place of Presentation
      Atsugi, Kanagawa
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Development of mapping population and identification of QTLs controlling traits related to flowering time2007

    • Author(s)
      Cagas, C.C.
    • Organizer
      園芸学会平成19年度春季大会
    • Place of Presentation
      京都市
    • Year and Date
      2007-03-24
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Development of mapping population and identification of QTLs controlling traits related to flowering time2007

    • Author(s)
      Cagas, C. C., et. al.
    • Organizer
      Annual Meeting of the Japanese Society for Horticultural Science
    • Place of Presentation
      Kyoto
    • Year and Date
      2007-03-24
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2005-04-01   Modified: 2016-04-21  

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