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Presumptive diagnosis of dwarfed Japanese pear by using a mobile magnetic resonance imaging system

Research Project

Project/Area Number 23658024
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Horticulture/Landscape architecture
Research InstitutionUniversity of Tsukuba

Principal Investigator

GEMMA Hiroshi  筑波大学, 生命環境系, 教授 (70094406)

Co-Investigator(Kenkyū-buntansha) SEKOZAWA Yoshihiko  筑波大学, 生命環境系, 助教 (90361310)
KOSE Katsumi  筑波大学, 数理物質系, 教授 (60186690)
Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsナシ / 萎縮症 / MRI / 非破壊計測 / 生体情報 / ニホンナシ / 水分生理 / 水ポテンシャル / 樹液流動 / 非破壊検査 / 果樹
Research Abstract

This study was carried out to focus upon the water relation of branches of Japanese pear with the dwarfed symptom by using the novel mobile MRI (magnetic resonance imaging) system incorporated with the measurement of sap flow, water potential, root activity and so forth. As a marker of MRI, T1, T2, and proton density in the cross sections of the sound and diseased branches, show clearly the high density of mobile water protons around the xylem located close to the external surface ofthe branches. In the ADC maps, the diseased branch has no definite high ADC area while the sound branch clearly shows. This difference clearly shows that the water transport function is degraded or destroyed in the diseased branch. A diurnal change of ADC in the branch corresponds clearly the water transport in the pear tree branch which shown in the real sap flow pattern in a whole day. The sap flow shows remarkably lower value in the diseased branch from sprouting until leafing stage than sound branch, but comparable value over leafing stage. From these results, a mobile MRI system will be an available tool of the presumptive diagnosis for dwarf Japanese pear using non destructive measurement.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (2 results)

All 2012 2011

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (1 results)

  • [Journal Article] Development of a mobile magnetic resonance imaging system for outdoor tree measurements2011

    • Author(s)
      Kimura,T., Geya,Y., Terada,Y., Kose,K., Haishi,T.,Gemma,H.and Sekozawa, Y.
    • Journal Title

      Review of Scientific Instruments

      Volume: 82 Issue: 5

    • DOI

      10.1063/1.3589854

    • NAID

      120007130873

    • Related Report
      2012 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Presentation] 小型モバイルMRIによるニホンナシ萎縮症の早期診断2012

    • Author(s)
      弦間 洋・坂田麻衣・木村武史・瀬古澤由彦・菅谷純子・巨瀬勝美
    • Organizer
      園芸学会
    • Place of Presentation
      福井県立大学
    • Year and Date
      2012-09-24
    • Related Report
      2012 Annual Research Report 2012 Final Research Report

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Published: 2011-08-05   Modified: 2019-07-29  

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