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dc.contributor.author
Mangieri, Mariano Alejandro
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dc.contributor.author
Mantese, Anita Ida
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dc.contributor.author
Schürmann, Alejandro Alvarez
dc.contributor.author
Chimenti, Claudio Alejandro
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dc.date.available
2018-06-25T15:57:17Z
dc.date.issued
2016-08
dc.identifier.citation
Mangieri, Mariano Alejandro; Mantese, Anita Ida; Schürmann, Alejandro Alvarez; Chimenti, Claudio Alejandro; Effects of ethephon on anatomical changes in sunflower (Helianthus annuus L.) stems associated with lodging; Csiro Publishing; Crop and Pasture Science; 67; 9; 8-2016; 988-999
dc.identifier.issn
1836-0947
dc.identifier.uri
http://hdl.handle.net/11336/49918
dc.description.abstract
Stem lodging causes significant losses in crops of cereals and oilseeds. The aim of the present study was to identify the anatomical causes that generate differences in response to stem lodging in sunflower. Two sunflower hybrids (Stay-Green, resistant to stem lodging; Zenit, susceptible to stem lodging) were grown at three crop population densities and artificially lodged at two advanced ontogeny stages (R7 and R8), which were preceded by ethephon application near the flower button stage (R1). Measurements included stem failure moment of force (Bs), thickness of primary and secondary structures in the stem lodging zone (t), diameter of the stem lodging zone (di), sclerenchyma packages area (sp), secondary xylem tissue area (xt) and yield. Stay-Green had significantly higher values for Bs, t, di, sp and xt. At higher crop densities and more advanced ontogeny stages these parameters were reduced, favouring stem lodging, although the effects were ameliorated by ethephon application through anatomical modifications. Zenit exhibited the greatest responses to ethephon application. The present study is the first field study identifying anatomical changes causing stem lodging and intraspecific variability in sunflowers. The information provided can be used by geneticists in selection programs for stem lodging tolerance in the context of increasing crop population densities to improve sunflower yield.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ethylene
dc.subject
Tolerance to Lodging.
dc.subject.classification
Agricultura
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Effects of ethephon on anatomical changes in sunflower (Helianthus annuus L.) stems associated with lodging
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-19T15:51:54Z
dc.identifier.eissn
1836-5795
dc.journal.volume
67
dc.journal.number
9
dc.journal.pagination
988-999
dc.journal.pais
Australia
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dc.description.fil
Fil: Mangieri, Mariano Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.description.fil
Fil: Mantese, Anita Ida. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.description.fil
Fil: Schürmann, Alejandro Alvarez. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.description.fil
Fil: Chimenti, Claudio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.journal.title
Crop and Pasture Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/CP15375
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.publish.csiro.au/cp/CP15375
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