Effect of Blue-Light PPFD Percentage in Red and Blue LED Low-Light Irradiation during Storage on the Contents of Chlorophyll and Rubisco in Grafted Tomato Plug Seedlings

• OHASHI-KANEKO Keiko

  <I>Graduate School of Agricultural and Life Sciences, The University of Tokyo</I>

• FUJIWARA Kazuhiro

  <I>Graduate School of Agricultural and Life Sciences, The University of Tokyo</I>

• KIMURA Yoshikatsu

  <I>Graduate School of Agricultural and Life Sciences, The University of Tokyo</I>

• KURATA Kenji

  <I>Graduate School of Agricultural and Life Sciences, The University of Tokyo</I>

Abstract

Grafted tomato (Lycopersicon esculentum Mill.) plug seedlings were stored at 10°C for 21 d under a photosynthetic photon flux density (PPFD) of 2 ymol m^-2 s^-1 using mixed light from red and blue LEDs, with different percentages of blue-light PPFD (0, 2, 5, 10 and 50%) . The effect of blue-light PPFD percentage was investigated and the optimal percentage was determined based on the contents of chlorophyll (Chl) and ribulose-l, 5-bisphosphate carboxylase/oxygenase (Rubisco) in leaves on the last days of storage. Chl and Rubisco contents decreased irrespective of the blue-light treatment during storage. On the last day of storage, Chl content were greater in the 2, 5, and 50% blue-light treatments than in the 0% treatment and Rubisco content were greater in the 2-50% treatments than in the 0% treatment. The suppression of the decrease in the Chl content contributed to the preservation of the visual quality of the stored seedlings. It can be concluded that the 2, 5 and 50% blue-light PPFD were effective in preserving the quality of grafted tomato seedlings during storage at 10°C and 2, umol m^-2 s^-1. In a commercial operation, 2% blue-light PPFD would be optimal, because blue LEDs are expensive.

Journal

• Environment Control in Biology

  Environment Control in Biology 44 (4), 309-314, 2006

  Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

Keywords

• blue light
• light emitting diode
• low temperature storage
• red light
• tomato seedlings

Details

• CRID: 1390001205260654208
• NII Article ID: 130003710070
• NII Article ID: 10026886459
• NII Book ID: AA12029220
• DOI: 10.2525/ecb.44.309
• ISSN: 18830986
• ISSN: 1880554X
• NDL BIB ID: 8590662
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8590662
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed