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1991 Fiscal Year Final Research Report Summary

Transport and accumulation of assimilate in crop plants.

Research Project

Project/Area Number 63440008
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 作物
Research InstitutionIbaraki University

Principal Investigator

CHONAN Nobuo  Ibaraki Univ., Faculty of Agriculture, Professor, 農学部, 教授 (90005603)

Co-Investigator(Kenkyū-buntansha) TSUCHIYA Tetsuro  Ibaraki Univ., Fac. of Agric. Assistant Prof., 農学部, 助手 (00207408)
MATSUDA Toshiaki  Ibaraki Univ., Fac. of Agric. Associate Prof., 農学部, 助教授 (50007788)
Project Period (FY) 1988 – 1991
KeywordsAssimilate / Trasport / Accumulation / Ultrastruture / Phloem / Phloem loading / Transfer cell / Starch grain
Research Abstract

The ultrastructure of the cells in source and sink organs of crop plants were observed by the transmission and scanning electron microscopes. From the results of observations, the mechanism of transport and accumulation of assimilate was discussed.
(1) Ultrastructural changes were observed in chloroplasts and phloem of rice leaves during senescence under different nitrgen supply. The degeneration of metaphloem is considered to be closely related to the decline of transport activity in Ahe senescent leaf.
(2) The structure of peripheral reticulum was compared among the chloroplas. ts of 38 species of Gramiiieae. The periphei, al reticulum is considered to be related to the water relation of plant rather than the transport of assimilate.
(3) The occurence of phloem transfer cells in the minor veins of 14 species of leguminous crops, the influence of temperature and sliadirig on the development of wall ingrowth, and the orcess of wall ingrowth development were examined in relation to the phloem loading of assimilate.
(4) The osmium-DMSO-osmium method developed for the observation of ailimal cell was proved to he applied for the cells of wheat endosperm and pea cotyledon.
(5) Tlie processes of starch grain development and plastid proliferation were elucidated by the observation of the potato tubers. The vascular system in the potato tuber was observed.

  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 土屋 哲郎: "ジャガイモ塊茎の肥大にともなうプラスチドの構造変化" 日本作物学会紀事. 58(別1). 230-231 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松田 智明: "OーDーO法によるコムギおよびエンドウ種子における物質蓄積の走査電子顕微鏡観察" 日本作物学会紀事. 59(別2). 213-214 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松田 智明: "マメ科作物種子における貯蔵物質蓄積の微細構造1.エンドウ子葉の走査電子顕微鏡観察" 日本作物学会関東支部会報. 5. 67-68 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 土屋 哲郎: "ジャガイモ塊茎における維管束走向" 日本作物学会紀事. 60(別1). 250-251 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中川 一彦: "マメ科作物葉における篩部転送細胞の分布と構造" 日本作物学会紀事. 60(別1). 252-253 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 長南 信雄: "窒素供給の異なる条件下で老化した水稲葉身の葉緑体と師部の微細構造変化" 日本作物学会紀事. 60. 247-254 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 長南 信雄: "稲学大成第一巻形態編" 松尾 孝嶺, 569 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tsuchiya, tetsuro: "Ultrastructural changes of plastid during development of potato tubers" Japan Jour. Crop Sci.58 (Extra issue 1). 230-231 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuda, Toshiaki: "Scanning electron microscope observation of pea cotyledon by using the O-D-O method" Japan Jour. Crop Sci.59 (Extra issue 2). 213-214 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuda, Toshiaki: "Ultrastructural observation of leguminous seeds. I. Scanning electron microscope observation of pea cotyledon" Rep. Kanto Branch, Crop Sci. Soc. Japan. 5. 67-68 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tsuchiya, Tetsuro: "Vascular system in potato tuber" Japan Jour. Crop Sci.60 (Exstra issue 1). 250-251 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nakagawa, Kazuhiko: "Occurence and structure of phloem transfer cells in leaves of leguminous crops" Japan Jour. Crop Sci.60 (Extra issue 1). 252-253 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Chonan, Nobuo: "Ultrastrctural changes in chloroplast and phloem of rice leaves during senescense under different nitrogen supply" Japan Jour. Crop Sci.60(2). 247-254 (1991)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-16  

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