Physiological responses to alternative flooding and drought stress episodes in two willow (Salix spp.) clones

Climate change will increase the occurrence of flash floods as a consequence of extreme rain events, creating alternate periods of drought and flooding during the growing season. We analyzed the responses of two willow clones with contrasting responses to flooding (clone B, Salix matsudana × Salix a...

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Autores principales: Doffo, Guillermo N., Monteoliva, Silvia Estela, Rodríguez, María Emilia, Luquez, Virginia Martha Cristina
Formato: Articulo Preprint
Lenguaje:Español
Publicado: 2016
Materias:
Ciencias Agrarias
Árboles
water stress, hydraulic conductivity, vessels, stomatal conductance, root to shoot ratio.
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/74953
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-74953
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Agrarias
Árboles
water stress, hydraulic conductivity, vessels, stomatal conductance, root to shoot ratio.
spellingShingle Ciencias Agrarias
Árboles
water stress, hydraulic conductivity, vessels, stomatal conductance, root to shoot ratio.
Doffo, Guillermo N.
Monteoliva, Silvia Estela
Rodríguez, María Emilia
Luquez, Virginia Martha Cristina
Physiological responses to alternative flooding and drought stress episodes in two willow (Salix spp.) clones
topic_facet Ciencias Agrarias
Árboles
water stress, hydraulic conductivity, vessels, stomatal conductance, root to shoot ratio.
description Climate change will increase the occurrence of flash floods as a consequence of extreme rain events, creating alternate periods of drought and flooding during the growing season. We analyzed the responses of two willow clones with contrasting responses to flooding (clone B, Salix matsudana × Salix alba hybrid; clone Y, Salix alba) to different combinations of stress treatments: continuous flooding or drought for six weeks, or cyclic treatments of two weeks of stress separated by two weeks of watering at field capacity. Drought reduced growth, stomatal conductance, and total leaf area in both clones, but flooding did not. Flooding reduced the root to shoot ratio in both clones. The hydraulic conductivity of the main stem was significantly reduced by drought only in clone Y. The area of the vessels was decreased by both drought and flooding, but the number was increased only by drought. The occurrence of drought before flooding reduced the vessel area, but the opposite treatment did not. An episode of drought after one of flooding is more stressful than the opposite situation, especially for clone Y, which could not adjust its water transport capacity during the drought period.
format Articulo
Preprint
author Doffo, Guillermo N.
Monteoliva, Silvia Estela
Rodríguez, María Emilia
Luquez, Virginia Martha Cristina
author_facet Doffo, Guillermo N.
Monteoliva, Silvia Estela
Rodríguez, María Emilia
Luquez, Virginia Martha Cristina
author_sort Doffo, Guillermo N.
title Physiological responses to alternative flooding and drought stress episodes in two willow (Salix spp.) clones
title_short Physiological responses to alternative flooding and drought stress episodes in two willow (Salix spp.) clones
title_full Physiological responses to alternative flooding and drought stress episodes in two willow (Salix spp.) clones
title_fullStr Physiological responses to alternative flooding and drought stress episodes in two willow (Salix spp.) clones
title_full_unstemmed Physiological responses to alternative flooding and drought stress episodes in two willow (Salix spp.) clones
title_sort physiological responses to alternative flooding and drought stress episodes in two willow (salix spp.) clones
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/74953
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