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1994 Fiscal Year Final Research Report Summary

Studies on the systems and controlling factors in translocation and destribution of absorbed nitrogen in gramineous crops.

Research Project

Project/Area Number 04454047
Research Category

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

Allocation TypeSingle-year Grants
Research Field 作物
Research InstitutionUniversity of Osaka Prefecture.

Principal Investigator

MIMOTO Hironori  University of Osaka Prefecture. College of Agriculture. Professor, 農学部, 教授 (20118003)

Co-Investigator(Kenkyū-buntansha) OHE Masamichi  University of Osaka Prefecture. College of Agriculture. Assistant, 農学部, 助手 (60244662)
DAIMON Hiroyuki  University of Osaka Prefecture. College of Agriculture. Assistant, 農学部, 助手 (50236783)
Project Period (FY) 1992 – 1994
KeywordsAbsorption / Distribution / Fixed nitrogen / Gramineous crops / Half-leaf / Leaf color / ^<15>N fertilizer / Translocation
Research Abstract

To clarify the controlling factors in absorption and translocation of nitrogen in rice plant, the distribution of nitrogen was researched by using ^<15>N fertilizer. The destribution of absorbed nitrogen was varied with the leaf positions and the inside and outside half-leaves in rice plant. The reasons of the fact that the nitrogen contents of an outside half-leaf was higher than that of an inside half-leaf were considered that the width of outside half-leaf was narrower, the volume of nodal roots on an outside half-leaf was larger, and the nitrogenabsorbed by outside nodal roots was translocated only to outside half-leaves and could not retranslocate directly to another side. The aitrogen contents showed a high positive correlation with the leaf color intensity. The most stable leaf spots in leaf color intensity were at the center of lateral sides of a midrib of leaf blade on uppermost fully expanded second leaf. In wheat plant, the defferences in leaf color between outside and inside half-leaf were not recognized. The degrees of variation in leaf color intensity on leaf positions in wheat plant and corn plant were larger than that of rice plant, but, basic tendency of variation in leaf color intensity in leaf positions corresponded to that of rice plant. The effects of legumes incorporated as green manures, sunn hemp and peanut, was examined for nitrogen contribution to the succeeding wheat. Total nitrogen content was higher in peanut compared with sunn hemp. The contribution percentage of nitrogen accumlated by each legume to total nitrogen of the succeeding wheat was 11.2% on the peanut plot and 9.4% on the sunn hemp plot. Peanut crop contribated more nitrogen to the succeeding wheat compared with sunn hemp.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] Katsuya Yano,Hiroyuki Daimon and Hironori Mimoto: "Effect of sunn hemp and peanut incorporated as green manures on growth and nitrogen uptake of the succeeding wheat." Japanese Journal of Crop Science. 63. 137-143 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hiroyuki Daimon,Satoshi Takada,Masamichi Ohe and Hironori Mimoto: "Interspecific differences in growth and nitrogen uptake among Crotalaria species." Japanese Journal of Crop Science. 64. 115-120 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三本弘乗・今井清之・大門弘幸・大江真道: "水稲の葉半における葉色と窒素濃度の葉位間変動の規則性.第1報 葉色の変動と葉の形態形成機構." 日本作物学会記事. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三本弘乗・今井清之・原田京子・大門弘幸・大江真道: "水稲の葉半における葉色と窒素濃度の葉位間変動の規則性.第2報 内外葉半への窒素の転流の偏り" 日本作物学会記事. (発売予定).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Katsuya Yano, Hiroyuki Daimon and Hironori Mimoto.: "Effect of sunn hemp and peanut incorporated as green manures on growth and nittorogen uptake of the succeeding wheat." Japanese Journal Crop Science.63. 137-143 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroyuki Daimon, Satoshi Takada, Masamichi Ohe and Hironori Mimoto.: "Interspecific differences in growth and nitrogen uptake among Crotalaria species." Japanese Journal Crop Science.64. 115-120 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hironori Mimoto, Kiyoyuki Imai, Hiroyuki Daimon and Masamichi Ohe.: "Regularity in variation of leaf color and nitrogen distribution in half-leaf blades by leaf position on the stems of rice plants. I.Variation of chlorophyll meter values and mechanism of leaf formation." Japanese Journal Crop Science.(In Press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hironori Mimoto, Kiyoyuki Imai, Kyoka Harada, Hiroyuki Daimon and Masamichi Ohe: "Regularity in variation of leaf color and nitrogen destribution in half-leaf blades by leaf position on the stems of rice plants. II,Uneven translocation of nitrogen berween outside and inside half-leaves." Japanese Journal Crop Science.(In press).

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

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Published: 1999-03-16  

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