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The relationship between the changes of physiological activity and rooting ratio in cuttings

Research Project

Project/Area Number 03660157
Research Category

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

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionKOCHI UNIVERSITY

Principal Investigator

IKEMOTO Akio  KOCHI UNIVERSITY,FACULTY,PROF., 農学部, 教授 (00093948)

Co-Investigator(Kenkyū-buntansha) NISIMURA Takeji  KOCHI UNIVERSITY,FACULTY,ASSOCIATE PROF., 農学部, 助教授 (30036743)
NAGAMORI Michio  KOCHI UNIVERSITY,FACULTY,PROF., 農学部, 教授 (60036704)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywordswater content / photosynthesis / rooting ratio in cuttings / xylem pressure potential / さし木の生理活動
Research Abstract

This experiment was carried out to determine the relationship between the change of physiological activity and the rooting ratio in cuttings. Cuttings of Sugi(Cryptomeria japonica) and some broad-leaved tree and cuttings of their parents were used as plant materials. Xylem water potential, water content, photosynthesis and other parameters were measured in relation to rooting. The potential of cuttings and their parent trees was highest before sunrise and lowest during midday, and then recovered during sunset. The results showed differences degree of rootings. The water content in cuttings was low as compared with that of their parent and it was a little higher in the autumn than in spring. The relationship between the water content and the potential of the cuttings showed that the potential increased significantly in the fall than in spring. It seemed that the root development hastened the absorption of water and that the demand for the water was low as compared with that during spring. The changes in the values in cuttings and rooting rates from August to December showed a high rooting ratio in the clone which recovered the high potential from August to December. On the other hand, the relationship between the changing values of potential from March to August and rooting ratio showed a high rooting ratio in the close which did not have significant influence on xylem pressure potential. The result seemed to indicate the clone which responded favorably to water condition from spring may have a good rooting rate.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] 池本彰夫: "スギのさし木の発根と木部圧ポテンシャル,光合成速度の関係" 日本林学会関西支部論文. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Akio IKEMOTO,Shinichi HARA,Michio NAGAMORI,Takeji NISIMURA: "Relationship among the rooting,xylem pressure potential,and photosynthetic rate in Sugi(Cryptomeria japonica)cuttings" KANSAI Br.J.Jpn.For.Soc.(1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 池本 彰夫: "スギのさし木の発根と木部圧ポテンシャル,光合成速度の関係" 日本林学会関西支部論文. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 池本 彰夫: "スギさし木の生理活動と発根" 日本株学会関西支部大会(第43回)論文集. 43. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 池本 彰夫: "さし木の生理活動と発根" 高知大学農学部演習林報告. 20. (1993)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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