Effect of paclobutrazol on three different aquatic macrophytes under in vitro monoculture or polyculture conditions

  • Kitti Bodhipadma
  • Sompoch Noichinda
  • Thanaphol Maneeruang
  • Koravisd Nathalang
  • Luepol Punnakanta
  • David WM Leung

Abstract

Three aquatic plants, coontail (Ceratophyllum demersum L.), hydrilla [Hydrilla verticillata (L. f.) Royle] and giant duckweed [Spirodela polyrhiza (L.) Schleiden], were successfully surface sterilized and cultured on liquid basal MS (Murashige and Skoog, 1962) medium under aseptic conditions. Shoot explants obtained from these plants were transferred to basal MS medium supplemented with 0, 0.25 and 0.5 mg/l paclobutrazol (PBZ) under in vitro monoculture or polyculture conditions. There were some differences in the patterns of fresh weight increases of the three aquatic plants under monoculture and polyculture conditions. Among the three macrophytes studied, coontail was the most sensitive to 0.25 or 0.5 mg/l PBZ as its fresh weights did not increase at these PBZ concentrations during eight weeks under both monoculture and polyculture conditions. Giant duckweed were relatively more sensitive than hydrilla in response to addition of PBZ to the growth medium under both monoculture or polyculture conditions suggesting that PBZ might not be an effective aquatic pest control agent for hydrilla. The dominance of giant duckweed over hydrilla was effectively overturned with the addition of 0.5 mg/l PBZ to the polyculture medium.

Keywords: Aquatic plants, coontail, giant duckweed, hydrilla, plant growth retardant.

African Journal of Biotechnology Vol. 12(39), pp. 5809-5813

Author Biographies

Kitti Bodhipadma
Department of Agro-Industrial Technology, Faculty of Applied Science, King Mongkut’s University of Technology, North Bangkok, Bangsue, Bangkok 10800, Thailand
Sompoch Noichinda
Department of Agro-Industrial Technology, Faculty of Applied Science, King Mongkut’s University of Technology, North Bangkok, Bangsue, Bangkok 10800, Thailand
Thanaphol Maneeruang
Department of Agro-Industrial Technology, Faculty of Applied Science, King Mongkut’s University of Technology, North Bangkok, Bangsue, Bangkok 10800, Thailand
Koravisd Nathalang
Department of Biology, Faculty of Science, Mahidol University, Rama VI Road, Rajathevi District, Bangkok 10400, Thailand
Luepol Punnakanta
Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand.
David WM Leung
School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
Published
2016-05-16
Section
Articles

Journal Identifiers


eISSN: 1684-5315