Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition

Autores
Acciaresi, Horacio Abel; Guiamet, Juan José
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of this study was to establish the morphological or physiological nature of the changes in growth parameters of maize and Sorghum halepense plants growing under competition for water. Plant growth analysis studies in semi-controlled conditions in plastic containers were conducted in two consecutive years. The competition treatments were established 4 weeks after emergence of both species and lasted for 4 weeks. Treatments of low (75% of field capacity) and very low water availability (irrigation withheld) were established. The variables obtained were: relative growth rate (RGR), leaf area ratio (LAR), net assimilation rate (NAR), specific leaf area (SLA), leaf mass fraction (LMF), rhizome mass fraction (rizMF), root length ratio (RLR), root mass fraction (RMF), specific root length (SRL) and length of fine roots (VfRL). The RGR of S. halepense was less affected by the two levels of competition than that of either of two maize hybrids. The weed was able to maintain its ability to grow, due to the maintenance of NAR during competition. A similar contribution of biomass from leaves and rhizomes to roots was observed in S. halepense, favouring the formation of very fine roots. In contrast, in maize, the decrease in RGR was due to a decline in NAR and there was no formation of fine roots to maintain water absorption during competition. The greater increase both in biomass partitioned to roots and root length by S. halepense, might negatively impact maize ability to compete for water during the critical competition period.
Fil: Acciaresi, Horacio Abel. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina
Fil: Guiamet, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Materia
Zea mays
johnsongrass
plant growth analysis
competitive ability
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:11336/277498
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/277498
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competitionAcciaresi, Horacio AbelGuiamet, Juan JoséZea maysjohnsongrassplant growth analysiscompetitive abilityhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4The aim of this study was to establish the morphological or physiological nature of the changes in growth parameters of maize and Sorghum halepense plants growing under competition for water. Plant growth analysis studies in semi-controlled conditions in plastic containers were conducted in two consecutive years. The competition treatments were established 4 weeks after emergence of both species and lasted for 4 weeks. Treatments of low (75% of field capacity) and very low water availability (irrigation withheld) were established. The variables obtained were: relative growth rate (RGR), leaf area ratio (LAR), net assimilation rate (NAR), specific leaf area (SLA), leaf mass fraction (LMF), rhizome mass fraction (rizMF), root length ratio (RLR), root mass fraction (RMF), specific root length (SRL) and length of fine roots (VfRL). The RGR of S. halepense was less affected by the two levels of competition than that of either of two maize hybrids. The weed was able to maintain its ability to grow, due to the maintenance of NAR during competition. A similar contribution of biomass from leaves and rhizomes to roots was observed in S. halepense, favouring the formation of very fine roots. In contrast, in maize, the decrease in RGR was due to a decline in NAR and there was no formation of fine roots to maintain water absorption during competition. The greater increase both in biomass partitioned to roots and root length by S. halepense, might negatively impact maize ability to compete for water during the critical competition period.Fil: Acciaresi, Horacio Abel. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; ArgentinaFil: Guiamet, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; ArgentinaWiley Blackwell Publishing, Inc2010-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/277498Acciaresi, Horacio Abel; Guiamet, Juan José; Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition; Wiley Blackwell Publishing, Inc; Weed Research; 50; 5; 10-2010; 481-4920043-1737CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-3180.2010.00794.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-3180.2010.00794.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T14:44:56Zoai:ri.conicet.gov.ar:11336/277498instacron: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:34982025-12-23 14:44:56.248CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
title Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
spellingShingle Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
Acciaresi, Horacio Abel
Zea mays
johnsongrass
plant growth analysis
competitive ability
title_short Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
title_full Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
title_fullStr Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
title_full_unstemmed Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
title_sort Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition
dc.creator.none.fl_str_mv Acciaresi, Horacio Abel
Guiamet, Juan José
author Acciaresi, Horacio Abel
author_facet Acciaresi, Horacio Abel
Guiamet, Juan José
author_role author
author2 Guiamet, Juan José
author2_role author
dc.subject.none.fl_str_mv Zea mays
johnsongrass
plant growth analysis
competitive ability
topic Zea mays
johnsongrass
plant growth analysis
competitive ability
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv The aim of this study was to establish the morphological or physiological nature of the changes in growth parameters of maize and Sorghum halepense plants growing under competition for water. Plant growth analysis studies in semi-controlled conditions in plastic containers were conducted in two consecutive years. The competition treatments were established 4 weeks after emergence of both species and lasted for 4 weeks. Treatments of low (75% of field capacity) and very low water availability (irrigation withheld) were established. The variables obtained were: relative growth rate (RGR), leaf area ratio (LAR), net assimilation rate (NAR), specific leaf area (SLA), leaf mass fraction (LMF), rhizome mass fraction (rizMF), root length ratio (RLR), root mass fraction (RMF), specific root length (SRL) and length of fine roots (VfRL). The RGR of S. halepense was less affected by the two levels of competition than that of either of two maize hybrids. The weed was able to maintain its ability to grow, due to the maintenance of NAR during competition. A similar contribution of biomass from leaves and rhizomes to roots was observed in S. halepense, favouring the formation of very fine roots. In contrast, in maize, the decrease in RGR was due to a decline in NAR and there was no formation of fine roots to maintain water absorption during competition. The greater increase both in biomass partitioned to roots and root length by S. halepense, might negatively impact maize ability to compete for water during the critical competition period.
Fil: Acciaresi, Horacio Abel. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina
Fil: Guiamet, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
description The aim of this study was to establish the morphological or physiological nature of the changes in growth parameters of maize and Sorghum halepense plants growing under competition for water. Plant growth analysis studies in semi-controlled conditions in plastic containers were conducted in two consecutive years. The competition treatments were established 4 weeks after emergence of both species and lasted for 4 weeks. Treatments of low (75% of field capacity) and very low water availability (irrigation withheld) were established. The variables obtained were: relative growth rate (RGR), leaf area ratio (LAR), net assimilation rate (NAR), specific leaf area (SLA), leaf mass fraction (LMF), rhizome mass fraction (rizMF), root length ratio (RLR), root mass fraction (RMF), specific root length (SRL) and length of fine roots (VfRL). The RGR of S. halepense was less affected by the two levels of competition than that of either of two maize hybrids. The weed was able to maintain its ability to grow, due to the maintenance of NAR during competition. A similar contribution of biomass from leaves and rhizomes to roots was observed in S. halepense, favouring the formation of very fine roots. In contrast, in maize, the decrease in RGR was due to a decline in NAR and there was no formation of fine roots to maintain water absorption during competition. The greater increase both in biomass partitioned to roots and root length by S. halepense, might negatively impact maize ability to compete for water during the critical competition period.
publishDate 2010
dc.date.none.fl_str_mv 2010-10
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/11336/277498
Acciaresi, Horacio Abel; Guiamet, Juan José; Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition; Wiley Blackwell Publishing, Inc; Weed Research; 50; 5; 10-2010; 481-492
0043-1737
CONICET Digital
CONICET
url http://hdl.handle.net/11336/277498
identifier_str_mv Acciaresi, Horacio Abel; Guiamet, Juan José; Below‐ and above‐ground growth and biomass allocation in maize and Sorghum halepense in response to soil water competition; Wiley Blackwell Publishing, Inc; Weed Research; 50; 5; 10-2010; 481-492
0043-1737
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-3180.2010.00794.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-3180.2010.00794.x
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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
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score 12.952241

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