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Development of Estimation Method for Imbibition Characteristics in Soybean Seed - To Facilitate Selection for Better Germination Growth under Excess Soil Moisture Conditions -

Research Project

Project/Area Number 15K14636
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Crop production science
Research InstitutionShinshu University

Principal Investigator

HAGIWARA Motoyuki  信州大学, 学術研究院農学系, 教授 (90172840)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords発芽 / ダイズ / 過湿条件 / 吸水 / 種子冠水抵抗性 / 種子の吸水 / 過湿土壌 / 種皮 / 子葉 / 品種間差 / 冠水抵抗性 / 水分活性
Outline of Final Research Achievements

Two indices, 1: E/A, where A is the amount of water absorbed by a seed before absorption was suspended and E is the amount of water evaporated from a seed after then, and 2: water activity (Aw) of a seed were supposed to indicate water infiltration status of a seed. When these ware compared, E/A better correlated with germination percentages and germination growths in germination test under excess water conditions. Although the increase in seed volume during water absorption seemed to be a factor related to mechanical damage of a seed tissue resulting in suppressed germination growth under excess water conditions, it correlated even lower, compared to E/A and Aw, with the results obtained from germination test under excess water conditions.
From the above, E/A was a superior index for the evaluation of the germination resistance under excess water conditions. It was also shown that more effective E/A values are available by correcting them taking the size of a seed into account.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (2 results)

All 2018 2016

All Presentation (2 results)

  • [Presentation] ダイズ種子冠水抵抗性の簡易評価指標の改良による有用性向上2018

    • Author(s)
      三浦 康児, 田中 智大, 萩原 素之
    • Organizer
      日本作物学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ダイズの冠水抵抗性評価のための種子吸水特性の簡易評価の検討2016

    • Author(s)
      萩原素之・三浦康児
    • Organizer
      日本作物学会
    • Place of Presentation
      龍谷大学瀬田キャンパス(滋賀県大津市)
    • Year and Date
      2016-09-10
    • Related Report
      2016 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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