Superposition of the Transpiration-induced Water Potential and the Growth-induced Water Potential Associated with Expanding Tomato Leaves

• NONAMI Hiroshi

  Plant Biophysics/Biochemistry Research Laboratory, Faculty of Agriculture, Ehime University

• HOSSAIN Md. Mokter

  The United Graduate School of Agricultural Sciences, Ehime University

Abstract

The growth parameters of Lockhart's equation were determined in expanding leaves of tomato plants (Solanum lycopersicum L.) subjected to different relative humidity in the dark. In tomato leaves, sizes of the growth-induced water potential exhibited linear relations with the relative growth rates (RGR) under various vapor pressure difference (VPD) conditions between leaves and the ambient air. When transpiration rates of tomato plants became significantly larger, lines formed between the growth-induced water potential and RGR had a translational relation as VPD increased. Then, the transpiration-induced water potential became proportionally larger as VPD increased. These results indicated that transpiration flux and growth flux have additive relations, suggesting that water fluxes for growth and transpiration are linearly superimposed.

Journal

• Environment Control in Biology

  Environment Control in Biology 48 (3), 117-125, 2010

  Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

Keywords

• cell wall extensibility
• hydraulic conductivity
• <i>Solanum lycopersicum L</i>.
• transpiration
• turgor

Details

• CRID: 1390282680236469760
• NII Article ID: 10026721351
• NII Book ID: AA12029220
• DOI: 10.2525/ecb.48.117
• ISSN: 18830986
• ISSN: 1880554X
• NDL BIB ID: 10835017
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10835017
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed