Water stress and temperature effects on germination and early seedling growth of <i>Digitaria eriantha</i>

This study focused on the two major processes critical for plant establishment: Seed germination and seedling survival. We determined the effects of (1) water stress and temperature on the germination, and (2) water stress on early seedling growth of Digitaria eriantha cv ‘Irene’. Seeds harvested in...

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Autores principales: Brevedan, Roberto, Busso, Carlos Alberto, Fioretti, M. N., Toribio, M. B., Baioni, S. S., Torres, Yanina Alejandra, Fernández, Osvaldo Alberto, Giorgetti, H. D., Bentivegna, Diego Javier, Entio, Lisandro José, Ithurrart, Leticia Soledad, Montenegro, O., Mujica, María de la Merced, Rodríguez, G., Tucat, Guillermo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/99956
https://ri.conicet.gov.ar/11336/13201
http://www.academicjournals.org/journal/AJAR/article-abstract/E71627B36289
Aporte de:
id I19-R120-10915-99956
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Perennial grasses
Rangelands
Seeds
Forage
Arid zones
Argentina
spellingShingle Ciencias Agrarias
Perennial grasses
Rangelands
Seeds
Forage
Arid zones
Argentina
Brevedan, Roberto
Busso, Carlos Alberto
Fioretti, M. N.
Toribio, M. B.
Baioni, S. S.
Torres, Yanina Alejandra
Fernández, Osvaldo Alberto
Giorgetti, H. D.
Bentivegna, Diego Javier
Entio, Lisandro José
Ithurrart, Leticia Soledad
Montenegro, O.
Mujica, María de la Merced
Rodríguez, G.
Tucat, Guillermo
Water stress and temperature effects on germination and early seedling growth of <i>Digitaria eriantha</i>
topic_facet Ciencias Agrarias
Perennial grasses
Rangelands
Seeds
Forage
Arid zones
Argentina
description This study focused on the two major processes critical for plant establishment: Seed germination and seedling survival. We determined the effects of (1) water stress and temperature on the germination, and (2) water stress on early seedling growth of Digitaria eriantha cv ‘Irene’. Seeds harvested in 2007 were used for temperature studies, and those coming from 2006 and 2007 for water stress studies. In 2009, viability decreased by 65.4% from 2006 to 2007. During the first twenty-four hours, germination was more than 50% at constant (30 or 35°C) than alternating (10/30 or 10/35°C) temperatures, although total germination was about 80% for all temperature treatments. Polyethylene glycol 8000 was used to impose water stress conditions. Germination percentages and coefficients of velocity decreased with decreasing water potentials. Early seedling growth was smaller at lower water potentials. D. eriantha cv ‘Irene’ appeared to germinate within a wide range of temperatures, but it varied greatly in germination response to water potentials. Results suggest that this species could be planted in late spring-early summer, when seedbed temperatures are increasing and soil moisture might still be adequate.
format Articulo
Articulo
author Brevedan, Roberto
Busso, Carlos Alberto
Fioretti, M. N.
Toribio, M. B.
Baioni, S. S.
Torres, Yanina Alejandra
Fernández, Osvaldo Alberto
Giorgetti, H. D.
Bentivegna, Diego Javier
Entio, Lisandro José
Ithurrart, Leticia Soledad
Montenegro, O.
Mujica, María de la Merced
Rodríguez, G.
Tucat, Guillermo
author_facet Brevedan, Roberto
Busso, Carlos Alberto
Fioretti, M. N.
Toribio, M. B.
Baioni, S. S.
Torres, Yanina Alejandra
Fernández, Osvaldo Alberto
Giorgetti, H. D.
Bentivegna, Diego Javier
Entio, Lisandro José
Ithurrart, Leticia Soledad
Montenegro, O.
Mujica, María de la Merced
Rodríguez, G.
Tucat, Guillermo
author_sort Brevedan, Roberto
title Water stress and temperature effects on germination and early seedling growth of <i>Digitaria eriantha</i>
title_short Water stress and temperature effects on germination and early seedling growth of <i>Digitaria eriantha</i>
title_full Water stress and temperature effects on germination and early seedling growth of <i>Digitaria eriantha</i>
title_fullStr Water stress and temperature effects on germination and early seedling growth of <i>Digitaria eriantha</i>
title_full_unstemmed Water stress and temperature effects on germination and early seedling growth of <i>Digitaria eriantha</i>
title_sort water stress and temperature effects on germination and early seedling growth of <i>digitaria eriantha</i>
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/99956
https://ri.conicet.gov.ar/11336/13201
http://www.academicjournals.org/journal/AJAR/article-abstract/E71627B36289
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