Photosynthesis of Lettuce Exposed to Different Short Term Light Qualities

• KIM Hyeon-Hye

  <I>NASA Biological Sciences Office</I>

• WHEELER Raymond

  <I>NASA Biological Sciences Office</I>

• SAGER John

  <I>NASA Biological Sciences Office</I>

• NORIKANE Joey

  <I>University of Kentucky, Biosystems and Agricultural Engineering Department</I>

Abstract

The objectives of this study were to investigate the effect of short-term changes in the spectral environment on photosynthesis. Lettuce (Lactuca sativa) plant were grown under red-greenblue (RGB) light-emitting diodes (LEDs) for 23 d and then given 24-h exposure to red (R), redgreen (RG), or red-blue (RB) LEDs. Photosynthetic rates (Pn) were measured before the 24-h exposure, after 24-h exposure, and 24 h after returning to the original RGB lighting. Temporary changes in spectral quality affectedPn. The effects of the different light treatments onPnreversed after returning to the initial light source. This study showed thatPnwas responsive to spectral quality in the short-term and is not directly coupled to stomatal conductance.

Journal

• Environment Control in Biology

  Environment Control in Biology 43 (2), 113-119, 2005

  Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

Keywords

• intercellular CO<SUB>2</SUB> concentration
• light-emitting diodes (LEDs)
• photosynthesis
• stomatal conductance

Details

• CRID: 1390001205260297216
• NII Article ID: 130003856935
• NII Article ID: 10018078518
• NII Book ID: AA12029220
• DOI: 10.2525/ecb.43.113
• ISSN: 18830986
• ISSN: 1880554X
• NDL BIB ID: 7425260
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7425260
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed