Evaluation of Growth under Non-24 h Period Lighting Conditions in <i>Lactuca sativa</i> L.

• HIGASHI Takanobu

  Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences

• NISHIKAWA Shuhei

  Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences

• OKAMURA Nobuya

  Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences

• FUKUDA Hirokazu

  Department of Mechanical Engineering, Graduate School of Engineering, Osaka Prefecture University

Bibliographic Information

Other Title

• Evaluation of Growth under Non-24 h Period Lighting Conditions in Lactuca sativa L
• Evaluation of Growth under Non-24 h Period Lighting Conditions in Lactuca sativa L. Environ

Abstract

Circadian rhythms are synchronized by the external environment and are responsible for regulating many of physiological processes in organisms. In plants, a key component in the regulation of these physiological processes is referred to as circadian resonance (CR), which maximizes plant growth by entraining the periodicity of plant circadian rhythms to the external light-dark cycle. However, CR has only been extensively studied in Arabidopsis thaliana, and it is not known whether CR has a similar function in other plant species. In addition, the potential for manipulating CR in order to maximize agricultural production or plant growth has not yet been investigated. In this study, we sought to characterize the occurrence and role of CR in lettuce (Lactuca sativa L.), which is widely cultivated in closed plant factories. Our results showed that the variation in aerial weight is dependent upon both cultivar type and light quality, and the efficiency of CR is highest under red LED illumination and lowest under fluorescent light illumination. Furthermore, we demonstrated that LEDs may be highly beneficial for maximizing plant growth. Compared to FL illumination, LED illumination can be used to precisely control the circadian rhythm of plants and increase cultivation efficiency.

Journal

• Environment Control in Biology

  Environment Control in Biology 53 (1), 7-12, 2015

  Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

Keywords

• circadian clock
• circadian resonance
• entrainment
• growth
• hydroponic culture
• plant factory

Details

• CRID: 1390001205260610304
• NII Article ID: 130004944230
• NII Book ID: AA12029220
• DOI: 10.2525/ecb.53.7
• ISSN: 18830986
• ISSN: 1880554X
• NDL BIB ID: 026245130
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026245130
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed