Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination

  • Joseila Maldaner Department of Agricultural Diagnosis and Research of the State of Rio Grande do Sul, BR 287, Acesso VCR830, km 4,5, 97001-970, Santa Maria, Rio Grande do Sul, Brazil. https://orcid.org/0000-0002-3008-5047
  • Gerusa Pauli Kist Steffen Department of Agricultural Diagnosis and Research of the State of Rio Grande do Sul, BR 287, Acesso VCR830, km 4,5, 97001-970, Santa Maria, Rio Grande do Sul, Brazil. https://orcid.org/0000-0002-0464-567X
  • Evandro Luiz Missio Department of Agricultural Diagnosis and Research of the State of Rio Grande do Sul, BR 287, Acesso VCR830, km 4,5, 97001-970, Santa Maria, Rio Grande do Sul, Brazil. https://orcid.org/0000-0002-8582-0301
  • Cleber Witt Saldanha Department of Agricultural Diagnosis and Research of the State of Rio Grande do Sul, BR 287, Acesso VCR830, km 4,5, 97001-970, Santa Maria, Rio Grande do Sul, Brazil. https://orcid.org/0000-0001-6147-6027
  • Moro Tamires Silveira Federal University of Santa Maria. https://orcid.org/0000-0002-0966-7309
  • Fátima Ionara Conterato Department of Agricultural Diagnosis and Research of the State of Rio Grande do Sul, BR 287, Acesso VCR830, km 4,5, 97001-970, Santa Maria, Rio Grande do Sul, Brazil. https://orcid.org/0000-0002-3583-9389
  • Rejane Flores Laboratory of Biotechnology, Instituto Federal de Educação, Ciência e Tecnologia Farroupilha. https://orcid.org/0000-0002-3583-9389
  • Rosana Matos de Morais Department of Agricultural Diagnosis and Research of the State of Rio Grande do Sul, BR 287, Acesso VCR830, km 4,5, 97001-970, Santa Maria, Rio Grande do Sul, Brazil. https://orcid.org/0000-0002-2694-4646
Keywords: environmental factors, control, invasive species, lovegrass, emergence

Abstract

One of the exotic invasive species of greatest impact on the Pampa biome is lovegrass (Eragrostis plana Nees). This species, native of southwest Africa, was accidentally introduced in Brazil in the 1950s and has since become a troublesome weed of natural pasture, due to its high spreading power. In order to assess lovegrass seeds behavior against different potentially stressful factors, we evaluated wide ranges of luminosity, temperature and osmotic potential on E. plana germination. After exposure to treatments, vigor and seed germination were analyzed through the following: germination speed index (GSI), first count and accumulated germination. All evaluated variables influenced E. plana germination, suggesting a relative susceptibility to environmental factors such as light, temperature, and water availability, with respect to in vitro germination. This information can be used as an aid to planning future strategies to control the spread of this invasive grass.

Published
2019-05-27
How to Cite
1.
Maldaner J, Steffen G, Missio E, Saldanha C, Silveira M, Conterato F, Flores R, Morais R. Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination. Agrociencia Uruguay [Internet]. 27May2019 [cited 17Sep.2019];23(1):1-. Available from: http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/73
Section
Plant production