Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination
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.
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Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA)
2019
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oai:oai.agrocienciauruguay.uy:article-732021-04-16T02:27:25Z Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination Variaciones en luminosidad, temperatura y potencial osmótico afectan la germinación de Eragrostis plana Maldaner, Joseila Steffen, Gerusa Pauli Kist Missio, Evandro Luiz Saldanha, Cleber Witt Silveira, Moro Tamires Conterato, Fátima Ionara Flores, Rejane Morais, Rosana Matos de environmental factors control invasive species lovegrass emergence factores ambientales control especies invasoras capim annoni emergencia 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. Una de las especies exóticas invasoras de mayor impacto sobre el bioma Pampa es el capim annoni (Eragrostis plana Nees). Esta especie, originaria del suroeste de África, fue accidentalmente introducida en Brasil en la década de 1950 y desde entonces se ha convertido en un problema importante para las pasturas naturales, debido a su gran poder de propagación. Para verificar el comportamiento de las semillas de capim anonni con diferentes factores potencialmente estresantes, evaluamos amplios intervalos de luminosidad, temperatura y potencial osmótico en la germinación de E. plana. Después de la exposición a los tratamientos, el vigor y la germinación de las semillas fueron analizados a través del índice de velocidad de germinación (IVG), el primer conteo y la germinación acumulada. Todas las variables evaluadas influenciaron la germinación de E. plana. Esta es una importante información que puede utilizarse en la planificación de estrategias para controlar la propagación de esta planta invasora. Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) 2019-05-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://agrocienciauruguay.uy/index.php/agrociencia/article/view/73 10.31285/AGRO.23.1.4 Agrociencia Uruguay; Vol. 23 No. 1 (2019); e73 Agrociencia Uruguay; Vol. 23 Núm. 1 (2019); e73 Agrociencia Uruguay; v. 23 n. 1 (2019); e73 2730-5066 eng https://agrocienciauruguay.uy/index.php/agrociencia/article/view/73/41 Copyright (c) 2019 Agrociencia Uruguay |
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Maldaner, Joseila Steffen, Gerusa Pauli Kist Missio, Evandro Luiz Saldanha, Cleber Witt Silveira, Moro Tamires Conterato, Fátima Ionara Flores, Rejane Morais, Rosana Matos de |
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Maldaner, Joseila Steffen, Gerusa Pauli Kist Missio, Evandro Luiz Saldanha, Cleber Witt Silveira, Moro Tamires Conterato, Fátima Ionara Flores, Rejane Morais, Rosana Matos de Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination |
author_facet |
Maldaner, Joseila Steffen, Gerusa Pauli Kist Missio, Evandro Luiz Saldanha, Cleber Witt Silveira, Moro Tamires Conterato, Fátima Ionara Flores, Rejane Morais, Rosana Matos de |
author_sort |
Maldaner, Joseila |
title |
Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination |
title_short |
Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination |
title_full |
Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination |
title_fullStr |
Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination |
title_full_unstemmed |
Variations in Luminosity, Temperature and Osmotic Potential Affect the Eragrostis plana Germination |
title_sort |
variations in luminosity, temperature and osmotic potential affect the eragrostis plana germination |
description |
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. |
publisher |
Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) |
publishDate |
2019 |
url |
https://agrocienciauruguay.uy/index.php/agrociencia/article/view/73 |
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