• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Studies about mechanism for pre-harvest sprouting resistance found in wild buckwheat

Research Project

Project/Area Number 18K05606
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 39020:Crop production science-related
Research InstitutionNational Agriculture and Food Research Organization

Principal Investigator

Suzuki Tatsuro  国立研究開発法人農業・食品産業技術総合研究機構, 九州沖縄農業研究センター, グループ長補佐 (00469842)

Co-Investigator(Kenkyū-buntansha) 原 貴洋  国立研究開発法人農業・食品産業技術総合研究機構, 九州沖縄農業研究センター, 上級研究員 (40355657)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsソバ / 穂発芽 / メカニズム / 品種開発 / 遺伝子発現 / 休眠 / 野生種 / 遺伝子
Outline of Final Research Achievements

Buckwheat is an important crop based on Japanese culture. However, pre-harvest sprouting is a big problem because it leads reduction of yield. We found promising line which has strong pre-harvest sprouting resistance in wild buckwheat. This line has strong pre-harvest sprouting resistance even after removal of husk whereas pre-harvest sprouting resistance line in common buckwheat can germinate easily after removal of husk. It indicates that the wild buckwheat line has different mechanism to prevent pre-harvest sprouting.
Our research showed that strong pre-harvest sprouting resistance was dominated by a few dominant loci. In addition, gene expression analysis revealed that up regulation of gene to improve dormancy as same as down regulation of gene to reduce dormancy may be related to strong pre-harvest sprouting resistance in the wild buckwheat.

Academic Significance and Societal Importance of the Research Achievements

ソバ野生種の穂発芽抵抗性は少数の遺伝子座により支配されていたことから、交配により主要品種にその難穂発芽性を導入できる可能性があることを示している。また、遺伝子の発現解析において、発芽に対するブレーキ強化とアクセル軽減の両方向が関係する可能性があることは、ソバの難穂発芽性を説明する重要な情報である。
今後は、上記知見を受け、野生種の難穂発芽性に関係するDNAマーカーの開発を行うとともに、交配後代の収量性や成熟期等を考慮した選抜を行うことで、安定
多収のソバ品種の育成につなげるための実用化に応用することができると考えられる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Effect of storage temperature on occurrence of secondary dormancy in buckwheat seeds2020

    • Author(s)
      Suzuki Tatsuro、Hara Takahiro、Hara Takashi、Katsu Kenjiro
    • Journal Title

      Seed Science and Technology

      Volume: 48 Issue: 2 Pages: 257-267

    • DOI

      10.15258/sst.2020.48.2.13

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of storage temperature on occurrence of secondary dormancy in buckwheat seeds2020

    • Author(s)
      Tatsuro Suzuki, Takahiro Hara, Takashi Hara and Kenjiro Katsu
    • Journal Title

      Seed Science and Technology

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Occurrence of insoluble proanthocyanidin in Tartary buckwheat leaves and its possible roles.2019

    • Author(s)
      Suzuki, T., Oki, N., Sugawara, T., Park, S.U., Aii, J. & Katsu, K
    • Organizer
      14th International Symposium on Buckwheat
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of storage temperature on occurrence of secondly dormancy in buckwheat seeds.2019

    • Author(s)
      Suzuki, T., Hara, T. & Katsu, K.
    • Organizer
      14th International Symposium on Buckwheat
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Traits of self-pollinating line with preharvest-sprouting resistance in summer-ecotype buckwheat.2019

    • Author(s)
      Suzuki, T., Sekiguchi, Y., Matsuura, A., Hara, T. & Katsu, K.
    • Organizer
      14th International Symposium on Buckwheat
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi