African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6691

Full Length Research Paper

Controlled environmental conditions on germination of bermudagrass seeds

Gisele Sales Batista
  • Gisele Sales Batista
  • Department of Crop Production, College of Agricultural and Veterinary Sciences, UNESP State University of Sao Paulo (UNESP Univ Estadual Paulista, FCAV/UNESP), Brazil.
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Renata Bachin Mazzini-Guedes
  • Renata Bachin Mazzini-Guedes
  • Department of Crop Production, College of Agricultural and Veterinary Sciences, UNESP State University of Sao Paulo (UNESP Univ Estadual Paulista, FCAV/UNESP), Brazil.
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Victor Rojas Scaldelai
  • Victor Rojas Scaldelai
  • Department of Crop Production, College of Agricultural and Veterinary Sciences, UNESP State University of Sao Paulo (UNESP Univ Estadual Paulista, FCAV/UNESP), Brazil.
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Kathia Fernandes Lopes Pivetta
  • Kathia Fernandes Lopes Pivetta
  • Department of Crop Production, College of Agricultural and Veterinary Sciences, UNESP State University of Sao Paulo (UNESP Univ Estadual Paulista, FCAV/UNESP), Brazil.
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  •  Received: 16 December 2014
  •  Accepted: 05 March 2015
  •  Published: 12 March 2015

Abstract

Cynodon dactylon (L.) Pers., widely known as bermudagrass, is a cosmopolitan species used to form lawns, what provides aesthetic effects in parks and gardens, but also composes pastures and sports fields, such as golf and football. The use of seeds for the formation of new lawns is a common practice in Europe and in the United States, and is currently considerably expanding also in Brazil. It is important to understand the ideal environmental conditions for seed germination of each species, or cultivar. The aim of this study was to evaluate effects of salinity, temperature, light, substrate water contents, and sowing methods on germination of two bermudagrass cultivars: Princess 77 and Riviera. Three experiments, arranged in factorial schemes, were conducted: Experiment 1. Five salt concentrations (0, 25, 50, 75, and 100 mM) x two salt sources [sodium chloride (NaCl) and potassium chloride (KCl)]; Experiment 2. Three temperatures (constant at 30°C, alternating at 20 to 30°C, and alternating at 20 to 35°C) x presence or absence of light (8 h of light and 16 h of darkness, and total darkness); and Experiment 3. Four substrate water contents (25, 50, 75 and 100% of the substrate water retention capacity) x two sowing methods (in sand, and on sand surface). Germination percentage and germination rate were evaluated. Germination of Princess 77 was more effective in the absence of NaCl and KCl; at 20 to 35°C, either in the light or darkness; and at around 50% of the substrate water retention capacity, sown either in sand or on sand surface. Germination of Riviera seeds was more effective in the absence of NaCl and presence of KCl; at 20 to 35°C, in the light; and at 100% of the substrate water retention capacity, sown on sand surface.

 

Key words: Poaceae, Cynodon dactylon, Princess 77, Riviera, salinity, temperature, light, substrate water content, sowing method.