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Is crop ideotype applicable to the high-yielding ability of wheat?

Research Project

Project/Area Number 16K18644
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Crop production science
Research InstitutionTokyo University of Agriculture

Principal Investigator

KASAJIMA Shinya  東京農業大学, 生物産業学部, 准教授 (30564463)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsコムギ / きたほなみ / 多収要因 / 窒素代謝 / 草型 / 葉身角度 / 多収性 / 受光態勢 / 窒素吸収
Outline of Final Research Achievements

Field experiments focused on nitrogen metabolism and plant type were conducted to clarify the factors determining the high-yielding ability of the winter wheat cv. Kitahonami in Hokkaido, Japan. Compared with the previous winter wheat cv. Hokushin, Kitahonami showed less nitrogen translocation to the grain during the ripening period and higher nitrogen content in vegetative organs, leading to a higher assimilation in the inferior leaf, culm, and leaf sheath under the canopy; therefore, it was considered that the high-yielding ability of Kitahonami was attributed to the high crop growth rate (CGR) after the milk-ripe stage and large number of grains per ear. Moreover, there was a significant difference in the leaf angle between Kitahonami and Hokushin. The results clarified that crop ideotype is applicable to the high-yielding ability of wheat.

Academic Significance and Societal Importance of the Research Achievements

一般に、水稲の多収理論の1つである草型理論(理想的草型による受光態勢の改善)はコムギには当てはまらないと考えられてきたが、北海道の秋播性コムギ基幹品種「きたほなみ」は葉が直立した草姿を示し、窒素代謝ならびに葉身角度の面から、コムギの多収性に草型理論が当てはまることが明らかになった。本研究で得られた成果から「きたほなみ」の品種特性を活かした栽培技術が開発され、国内の麦作振興に寄与すると考えられる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017 Other

All Presentation (4 results) (of which Invited: 1 results) Remarks (1 results)

  • [Presentation] 秋播性多収コムギ品種「きたほなみ」の分げつ性と草型を活かした播種量および窒素施肥方法の改善と普及2019

    • Author(s)
      荒木英晴・笠島真也
    • Organizer
      日本作物学会第247回講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 北海道における秋播性多収コムギ品種「きたほなみ」の止葉葉身角度2019

    • Author(s)
      笠島真也・伊藤博武・神野裕信・大西志全・高橋肇
    • Organizer
      日本作物学会第247回講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 北海道における秋播性コムギ新旧品種の小花別粒重2018

    • Author(s)
      笠島真也・藤村竜也・伊藤博武・神野裕信・大西志全・高橋肇
    • Organizer
      日本作物学会第246回講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 窒素代謝からみた秋播性コムギ品種「きたほなみ」の多収要因2017

    • Author(s)
      笠島真也、山田翔太、伊藤博武、神野裕信、大西志全、高橋肇
    • Organizer
      日本作物学会第243回講演会
    • Place of Presentation
      東京大学農学部(東京都文京区)
    • Year and Date
      2017-03-29
    • Related Report
      2016 Research-status Report
  • [Remarks] 「きたほなみ」の品種特性を活かした栽培法

    • URL

      http://www.beibaku.net/wheat/2017/pdf/kitahonami.pdf

    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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