Control of environmental history for extracting potential of photosynthesis and translocation declining in afternoon

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K07668
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Agricultural environmental engineering/Agricultural information engineering
• Research Institution: Kyushu University
• Principal Investigator: Yasutake Daisuke 九州大学, 農学研究院, 准教授 (90516113)
• Co-Investigator(Kenkyū-buntansha): 北野 雅治 九州大学, 農学研究院, 教授 (30153109) ; 森 牧人 高知大学, 教育研究部自然科学系農学部門, 准教授 (60325496) ; 宮内 樹代史 高知大学, 教育研究部自然科学系農学部門, 准教授 (80253342)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 施設園芸 / 環境調節 / 光合成 / 転流 / 水分生理 / 昼寝現象

Outline of Final Research Achievements

Photosynthesis and translocation should usually decline in the afternoon and these phenomena are limiting factors in plant production in greenhouses. However, we suggested that they could be improved based on the past studies. In this project, we proposed the control of environmental history, based on the plant water relations in the morning, for extracting potential of photosynthesis and translocation in the afternoon, and examined its effects. As a result, continuous humid condition from the morning could keep stomatal opening and photosynthesis in the afternoon at the morning levels. Furthermore, leaf water potential as a driving force of translocation was also improved in the afternoon.

Free Research Field

生物環境調節学