Plant Biotechnology Reports

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Effect of photoperiod and light intensity on in vitro propagation of Alocasia amazonica

  • Jo, Eun-A. (Research Center for the Development of Advanced Horticultural Technology, Chungbuk National University) ;
  • Tewari, Rajesh Kumar (Research Center for the Development of Advanced Horticultural Technology, Chungbuk National University) ;
  • Hahn, Eun-Joo (Research Center for the Development of Advanced Horticultural Technology, Chungbuk National University) ;
  • Paek, Kee-Yoeup (Research Center for the Development of Advanced Horticultural Technology, Chungbuk National University)
  • Received : 2007.11.16
  • Accepted : 2008.06.07
  • Published : 2008.08.31
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Abstract

Plantlets of Alocasia amazonica regenerated under a photon flux density (PFD) of 15 or $30{\mu}mol\;m^{-2}s^{-1}$ showed better growth and development than those grown under higher PFDs. While chlorophyll a and chlorophyll b decreased, the number of stomata increased with increasing PFD. Photoperiods also affected plantlet growth and stomatal development. Highest growth was observed for the short photoperiod (8/16 h) and for equinoctial (12/12 h) light and dark periods. Very few stomata developed in the leaves of plantlets grown under a short photoperiod (8/16 h) and the number of stomata increased with increasing light period. In conclusion, both light intensity and photoperiod independently affect growth of A. amazonica and development of stomata, depending on the intensity and duration of light treatment.

Keywords

Acknowledgement

Supported by : Ministry of Education and Human Resource Development (MOE)

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