Bud viability in perennial grasses: Water stress and defoliation effects

Autores
Flemmer, Andrea Cecilia; Busso, Carlos Alberto; Fernandez, Osvaldo Alberto
Año de publicación
2002
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Effects of the timing and frequency of defoliation under different levels of soil water availability were evaluated on bud metabolic activity and subsequent outgrowth in the desirable (i.e., palatable) Stipa clarazii Ball. and S. tenuis Phil. in competition with the undesirable (i.e., unpalatable) S. gynerioides Phil. Field studies on these native, perennial tussock grasses were conducted from 1995 to 1997 in temperate, semiarid Argentina. Our working hypotheses were 1) axillary bud activation and subsequent tillering are lower under water stress than under higher soil moisture conditions in S. clarazii, S. tenuis, and S. gynerioides, 2) when compared to undefoliated controls, activation, and subsequent outgrowth of axillary buds reach similar or greater values in S. clarazii and S. tenuis after early (vegetative stage of development), but not late (during internode elongation) defoliations or increased defoliation frequency (vegetative+ during internode elongation) during each growing cycle. Additionally, it was expected that the greatest reduction of axillary bud metabolic activity and outgrowth would ocurr on plants defoliated twice, and 3) axillary bud activation and succeeding tillering are greater in the undefoliated S. gynerioides when the desirable species are defoliated than when they remain undefoliated. With a few exceptions, our results led us to reject all 3 hypotheses. Responses of axillary buds were in general specific to the species and treatments, to sampling time, and to the cumulative effects of previous treatments. This makes predictions of plant responses of these species under natural field conditions difficult, where they are often defoliated under water stress.
Fil: Flemmer, Andrea Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Busso, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Fernandez, Osvaldo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Materia
Nassella
Semiarid Grasslands
Stipa Gynerioides
Stipa Tenuis
Buds
Nassella Tenuis
Stipa Clarazii
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/32809
Acceder
id CONICETDig_0c5d560ad955656dd543447430b80d71
oai_identifier_str oai:ri.conicet.gov.ar:11336/32809
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Bud viability in perennial grasses: Water stress and defoliation effectsFlemmer, Andrea CeciliaBusso, Carlos AlbertoFernandez, Osvaldo AlbertoNassellaSemiarid GrasslandsStipa GynerioidesStipa TenuisBudsNassella TenuisStipa Claraziihttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Effects of the timing and frequency of defoliation under different levels of soil water availability were evaluated on bud metabolic activity and subsequent outgrowth in the desirable (i.e., palatable) Stipa clarazii Ball. and S. tenuis Phil. in competition with the undesirable (i.e., unpalatable) S. gynerioides Phil. Field studies on these native, perennial tussock grasses were conducted from 1995 to 1997 in temperate, semiarid Argentina. Our working hypotheses were 1) axillary bud activation and subsequent tillering are lower under water stress than under higher soil moisture conditions in S. clarazii, S. tenuis, and S. gynerioides, 2) when compared to undefoliated controls, activation, and subsequent outgrowth of axillary buds reach similar or greater values in S. clarazii and S. tenuis after early (vegetative stage of development), but not late (during internode elongation) defoliations or increased defoliation frequency (vegetative+ during internode elongation) during each growing cycle. Additionally, it was expected that the greatest reduction of axillary bud metabolic activity and outgrowth would ocurr on plants defoliated twice, and 3) axillary bud activation and succeeding tillering are greater in the undefoliated S. gynerioides when the desirable species are defoliated than when they remain undefoliated. With a few exceptions, our results led us to reject all 3 hypotheses. Responses of axillary buds were in general specific to the species and treatments, to sampling time, and to the cumulative effects of previous treatments. This makes predictions of plant responses of these species under natural field conditions difficult, where they are often defoliated under water stress.Fil: Flemmer, Andrea Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Busso, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Fernandez, Osvaldo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaSociety for Range Management2002-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32809Flemmer, Andrea Cecilia; Fernandez, Osvaldo Alberto; Busso, Carlos Alberto; Bud viability in perennial grasses: Water stress and defoliation effects; Society for Range Management; Journal Of Range Management; 55; 2; 3-2002; 150-1630022-409XCONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/https://journals.uair.arizona.edu/index.php/jrm/article/view/9702info:eu-repo/semantics/altIdentifier/doi/10.2458/azu_jrm_v55i2_flemmerinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:43:33Zoai:ri.conicet.gov.ar:11336/32809instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:43:34.009CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bud viability in perennial grasses: Water stress and defoliation effects
title Bud viability in perennial grasses: Water stress and defoliation effects
spellingShingle Bud viability in perennial grasses: Water stress and defoliation effects
Flemmer, Andrea Cecilia
Nassella
Semiarid Grasslands
Stipa Gynerioides
Stipa Tenuis
Buds
Nassella Tenuis
Stipa Clarazii
title_short Bud viability in perennial grasses: Water stress and defoliation effects
title_full Bud viability in perennial grasses: Water stress and defoliation effects
title_fullStr Bud viability in perennial grasses: Water stress and defoliation effects
title_full_unstemmed Bud viability in perennial grasses: Water stress and defoliation effects
title_sort Bud viability in perennial grasses: Water stress and defoliation effects
dc.creator.none.fl_str_mv Flemmer, Andrea Cecilia
Busso, Carlos Alberto
Fernandez, Osvaldo Alberto
author Flemmer, Andrea Cecilia
author_facet Flemmer, Andrea Cecilia
Busso, Carlos Alberto
Fernandez, Osvaldo Alberto
author_role author
author2 Busso, Carlos Alberto
Fernandez, Osvaldo Alberto
author2_role author
author
dc.subject.none.fl_str_mv Nassella
Semiarid Grasslands
Stipa Gynerioides
Stipa Tenuis
Buds
Nassella Tenuis
Stipa Clarazii
topic Nassella
Semiarid Grasslands
Stipa Gynerioides
Stipa Tenuis
Buds
Nassella Tenuis
Stipa Clarazii
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Effects of the timing and frequency of defoliation under different levels of soil water availability were evaluated on bud metabolic activity and subsequent outgrowth in the desirable (i.e., palatable) Stipa clarazii Ball. and S. tenuis Phil. in competition with the undesirable (i.e., unpalatable) S. gynerioides Phil. Field studies on these native, perennial tussock grasses were conducted from 1995 to 1997 in temperate, semiarid Argentina. Our working hypotheses were 1) axillary bud activation and subsequent tillering are lower under water stress than under higher soil moisture conditions in S. clarazii, S. tenuis, and S. gynerioides, 2) when compared to undefoliated controls, activation, and subsequent outgrowth of axillary buds reach similar or greater values in S. clarazii and S. tenuis after early (vegetative stage of development), but not late (during internode elongation) defoliations or increased defoliation frequency (vegetative+ during internode elongation) during each growing cycle. Additionally, it was expected that the greatest reduction of axillary bud metabolic activity and outgrowth would ocurr on plants defoliated twice, and 3) axillary bud activation and succeeding tillering are greater in the undefoliated S. gynerioides when the desirable species are defoliated than when they remain undefoliated. With a few exceptions, our results led us to reject all 3 hypotheses. Responses of axillary buds were in general specific to the species and treatments, to sampling time, and to the cumulative effects of previous treatments. This makes predictions of plant responses of these species under natural field conditions difficult, where they are often defoliated under water stress.
Fil: Flemmer, Andrea Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Busso, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Fernandez, Osvaldo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
description Effects of the timing and frequency of defoliation under different levels of soil water availability were evaluated on bud metabolic activity and subsequent outgrowth in the desirable (i.e., palatable) Stipa clarazii Ball. and S. tenuis Phil. in competition with the undesirable (i.e., unpalatable) S. gynerioides Phil. Field studies on these native, perennial tussock grasses were conducted from 1995 to 1997 in temperate, semiarid Argentina. Our working hypotheses were 1) axillary bud activation and subsequent tillering are lower under water stress than under higher soil moisture conditions in S. clarazii, S. tenuis, and S. gynerioides, 2) when compared to undefoliated controls, activation, and subsequent outgrowth of axillary buds reach similar or greater values in S. clarazii and S. tenuis after early (vegetative stage of development), but not late (during internode elongation) defoliations or increased defoliation frequency (vegetative+ during internode elongation) during each growing cycle. Additionally, it was expected that the greatest reduction of axillary bud metabolic activity and outgrowth would ocurr on plants defoliated twice, and 3) axillary bud activation and succeeding tillering are greater in the undefoliated S. gynerioides when the desirable species are defoliated than when they remain undefoliated. With a few exceptions, our results led us to reject all 3 hypotheses. Responses of axillary buds were in general specific to the species and treatments, to sampling time, and to the cumulative effects of previous treatments. This makes predictions of plant responses of these species under natural field conditions difficult, where they are often defoliated under water stress.
publishDate 2002
dc.date.none.fl_str_mv 2002-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/32809
Flemmer, Andrea Cecilia; Fernandez, Osvaldo Alberto; Busso, Carlos Alberto; Bud viability in perennial grasses: Water stress and defoliation effects; Society for Range Management; Journal Of Range Management; 55; 2; 3-2002; 150-163
0022-409X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32809
identifier_str_mv Flemmer, Andrea Cecilia; Fernandez, Osvaldo Alberto; Busso, Carlos Alberto; Bud viability in perennial grasses: Water stress and defoliation effects; Society for Range Management; Journal Of Range Management; 55; 2; 3-2002; 150-163
0022-409X
CONICET Digital
CONICET
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.uair.arizona.edu/index.php/jrm/article/view/9702
info:eu-repo/semantics/altIdentifier/doi/10.2458/azu_jrm_v55i2_flemmer
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Society for Range Management
publisher.none.fl_str_mv Society for Range Management
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083540464173056
score 13.22299

Publicaciones similares