Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis

Autores
Busso, Carlos Alberto; Gittins Lopez, Cecilia Gabriela; Becker, Guillermo Fernando; Ghermandi, Luciana
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bud viability after various defoliation frequency treatments was determined in the perennial bunchgrass Poa ligularis under arid field conditions from 2002 to 2005. Bud respiratory activity was examined on various stem base hierarchies using the tetrazolium test, as validated with the vital stain Evan’s blue. The hypothesis of this work was that the total and viable axillary bud numbers on stem bases of all study stem base hierarchies are reduced as defoliation frequency increases. Interpretation of the results differed when they were expressed as a percentage rather than on a number per stem base basis. The total number of axillary buds per stem base was similar in all defoliation frequencies. When the results were expressed on a percentage basis, the order on stem bases having metabolically active buds was daughter tillers > stem bases with green tillers > stem bases without green tillers in all defoliation frequencies. The reverse order was found when considering dead buds. How the results are expressed thus deserves our attention when reporting results on bud viability in perennial grasses. An increased defoliation frequency increased the percentage of dead and dormant buds after the third or fourth defoliation of P. ligularis during the 1st study year. These percentages of bud viability, however, increased after the first defoliation during the 2nd study year. Bud viability was affected not only by the cumulative effects of defoliation but also by climatic variables throughout the seasons. However, our results show that P. ligularis can be defoliated up to twice a year without affecting bud viability, and thus its potential capacity for regrowth after defoliation.
EEA Alto Valle
Fil: Busso, Carlos Alberto. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS); Argentina.
Fil: Gittins López, Cecilia Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina
Fil: Becker, Guillermo Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Ghermandi, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA). Laboratorio ECOTONO; Argentina. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA). Laboratorio ECOTONO; Argentina
Fuente
Ecological Research 26 (5) : 985-997 (September 2011)
Materia
Poa
Defoliación
Macollamiento
Defoliation
Tillering
Bud Viability
Defoliation Frecuency
Perennial Grass
Viabilidad de las Yemas
Frecuencia de Defoliación
Hierba Perenne
Poa ligularis
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/18065
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spelling Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularisBusso, Carlos AlbertoGittins Lopez, Cecilia GabrielaBecker, Guillermo FernandoGhermandi, LucianaPoaDefoliaciónMacollamientoDefoliationTilleringBud ViabilityDefoliation FrecuencyPerennial GrassViabilidad de las YemasFrecuencia de DefoliaciónHierba PerennePoa ligularisBud viability after various defoliation frequency treatments was determined in the perennial bunchgrass Poa ligularis under arid field conditions from 2002 to 2005. Bud respiratory activity was examined on various stem base hierarchies using the tetrazolium test, as validated with the vital stain Evan’s blue. The hypothesis of this work was that the total and viable axillary bud numbers on stem bases of all study stem base hierarchies are reduced as defoliation frequency increases. Interpretation of the results differed when they were expressed as a percentage rather than on a number per stem base basis. The total number of axillary buds per stem base was similar in all defoliation frequencies. When the results were expressed on a percentage basis, the order on stem bases having metabolically active buds was daughter tillers > stem bases with green tillers > stem bases without green tillers in all defoliation frequencies. The reverse order was found when considering dead buds. How the results are expressed thus deserves our attention when reporting results on bud viability in perennial grasses. An increased defoliation frequency increased the percentage of dead and dormant buds after the third or fourth defoliation of P. ligularis during the 1st study year. These percentages of bud viability, however, increased after the first defoliation during the 2nd study year. Bud viability was affected not only by the cumulative effects of defoliation but also by climatic variables throughout the seasons. However, our results show that P. ligularis can be defoliated up to twice a year without affecting bud viability, and thus its potential capacity for regrowth after defoliation.EEA Alto ValleFil: Busso, Carlos Alberto. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS); Argentina.Fil: Gittins López, Cecilia Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Becker, Guillermo Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; ArgentinaFil: Ghermandi, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA). Laboratorio ECOTONO; Argentina. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA). Laboratorio ECOTONO; ArgentinaWiley2024-06-07T12:10:46Z2024-06-07T12:10:46Z2011-06-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/18065https://esj-journals.onlinelibrary.wiley.com/doi/10.1007/s11284-011-0857-90912-38141440-1703 (Online)https://doi.org/10.1007/s11284-011-0857-9Ecological Research 26 (5) : 985-997 (September 2011)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-10-16T09:31:37Zoai:localhost:20.500.12123/18065instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-16 09:31:37.849INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
title Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
spellingShingle Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
Busso, Carlos Alberto
Poa
Defoliación
Macollamiento
Defoliation
Tillering
Bud Viability
Defoliation Frecuency
Perennial Grass
Viabilidad de las Yemas
Frecuencia de Defoliación
Hierba Perenne
Poa ligularis
title_short Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
title_full Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
title_fullStr Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
title_full_unstemmed Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
title_sort Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis
dc.creator.none.fl_str_mv Busso, Carlos Alberto
Gittins Lopez, Cecilia Gabriela
Becker, Guillermo Fernando
Ghermandi, Luciana
author Busso, Carlos Alberto
author_facet Busso, Carlos Alberto
Gittins Lopez, Cecilia Gabriela
Becker, Guillermo Fernando
Ghermandi, Luciana
author_role author
author2 Gittins Lopez, Cecilia Gabriela
Becker, Guillermo Fernando
Ghermandi, Luciana
author2_role author
author
author
dc.subject.none.fl_str_mv Poa
Defoliación
Macollamiento
Defoliation
Tillering
Bud Viability
Defoliation Frecuency
Perennial Grass
Viabilidad de las Yemas
Frecuencia de Defoliación
Hierba Perenne
Poa ligularis
topic Poa
Defoliación
Macollamiento
Defoliation
Tillering
Bud Viability
Defoliation Frecuency
Perennial Grass
Viabilidad de las Yemas
Frecuencia de Defoliación
Hierba Perenne
Poa ligularis
dc.description.none.fl_txt_mv Bud viability after various defoliation frequency treatments was determined in the perennial bunchgrass Poa ligularis under arid field conditions from 2002 to 2005. Bud respiratory activity was examined on various stem base hierarchies using the tetrazolium test, as validated with the vital stain Evan’s blue. The hypothesis of this work was that the total and viable axillary bud numbers on stem bases of all study stem base hierarchies are reduced as defoliation frequency increases. Interpretation of the results differed when they were expressed as a percentage rather than on a number per stem base basis. The total number of axillary buds per stem base was similar in all defoliation frequencies. When the results were expressed on a percentage basis, the order on stem bases having metabolically active buds was daughter tillers > stem bases with green tillers > stem bases without green tillers in all defoliation frequencies. The reverse order was found when considering dead buds. How the results are expressed thus deserves our attention when reporting results on bud viability in perennial grasses. An increased defoliation frequency increased the percentage of dead and dormant buds after the third or fourth defoliation of P. ligularis during the 1st study year. These percentages of bud viability, however, increased after the first defoliation during the 2nd study year. Bud viability was affected not only by the cumulative effects of defoliation but also by climatic variables throughout the seasons. However, our results show that P. ligularis can be defoliated up to twice a year without affecting bud viability, and thus its potential capacity for regrowth after defoliation.
EEA Alto Valle
Fil: Busso, Carlos Alberto. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS); Argentina.
Fil: Gittins López, Cecilia Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina
Fil: Becker, Guillermo Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Ghermandi, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA). Laboratorio ECOTONO; Argentina. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA). Laboratorio ECOTONO; Argentina
description Bud viability after various defoliation frequency treatments was determined in the perennial bunchgrass Poa ligularis under arid field conditions from 2002 to 2005. Bud respiratory activity was examined on various stem base hierarchies using the tetrazolium test, as validated with the vital stain Evan’s blue. The hypothesis of this work was that the total and viable axillary bud numbers on stem bases of all study stem base hierarchies are reduced as defoliation frequency increases. Interpretation of the results differed when they were expressed as a percentage rather than on a number per stem base basis. The total number of axillary buds per stem base was similar in all defoliation frequencies. When the results were expressed on a percentage basis, the order on stem bases having metabolically active buds was daughter tillers > stem bases with green tillers > stem bases without green tillers in all defoliation frequencies. The reverse order was found when considering dead buds. How the results are expressed thus deserves our attention when reporting results on bud viability in perennial grasses. An increased defoliation frequency increased the percentage of dead and dormant buds after the third or fourth defoliation of P. ligularis during the 1st study year. These percentages of bud viability, however, increased after the first defoliation during the 2nd study year. Bud viability was affected not only by the cumulative effects of defoliation but also by climatic variables throughout the seasons. However, our results show that P. ligularis can be defoliated up to twice a year without affecting bud viability, and thus its potential capacity for regrowth after defoliation.
publishDate 2011
dc.date.none.fl_str_mv 2011-06-21
2024-06-07T12:10:46Z
2024-06-07T12:10:46Z
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/20.500.12123/18065
https://esj-journals.onlinelibrary.wiley.com/doi/10.1007/s11284-011-0857-9
0912-3814
1440-1703 (Online)
https://doi.org/10.1007/s11284-011-0857-9
url http://hdl.handle.net/20.500.12123/18065
https://esj-journals.onlinelibrary.wiley.com/doi/10.1007/s11284-011-0857-9
https://doi.org/10.1007/s11284-011-0857-9
identifier_str_mv 0912-3814
1440-1703 (Online)
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Ecological Research 26 (5) : 985-997 (September 2011)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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