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dc.contributor.author
Poverene, Maria Monica
dc.contributor.author
Cantamutto, Miguel Angel
dc.contributor.author
Seiler, Gerald J.
dc.date.available
2017-07-10T21:08:55Z
dc.date.issued
2009-04
dc.identifier.citation
Poverene, Maria Monica; Cantamutto, Miguel Angel; Seiler, Gerald J.; Ecological characterization of wild Helianthus annuus and H. petiolaris germplasm in Argentina; CropGen International; Plant Genetic Resources: Characterization and Utilization; 7; 1; 4-2009; 42-49
dc.identifier.issn
1479-2621
dc.identifier.uri
http://hdl.handle.net/11336/20054
dc.description.abstract
Helianthus annuus and H. petiolaris (Asteraceae) are wild sunflowers native to North America but have become naturalized in central Argentina covering an area of about 5 million hectares. Wild H. annuus has been recognized as invader species in several countries, but no research has been done to study the ecological determinants of their distribution. In a survey covering seven provinces between 318580 –388S and 608330 –698W, we described the ecology of the main wild populations. Wild Helianthus populations were located in three of the 18 ecological regions of Argentina, on five Mollisol and seven Entisol soil groups. The associated plant communities were comprised 60 species belonging to 16 families, all being frequent components of the native flora. Disease symptoms were seldom observed in wild populations, with Alternaria helianthi being the most commonly observed pathogen. Population size varied from less than 100 to more than 100,000 plants, covering from 100 to more than 60,000 m2 with densities most frequently up to 3 plants/m2 , but reaching 80 plants/m2 at certain sites. Intermediate plant phenotypes between wild species and cultivated sunflower were found in one-third of the populations providing evidence of intense gene flow. Hybrid swarms were found at three localities with population sizes between 100 and 10,000 individuals.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
CropGen International
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Community
dc.subject
Density
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Diseases
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Habitat;
dc.subject.classification
Agronomía, reproducción y protección de plantas
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Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
dc.title
Ecological characterization of wild Helianthus annuus and H. petiolaris germplasm in Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-10T13:08:18Z
dc.identifier.eissn
1479-263X
dc.journal.volume
7
dc.journal.number
1
dc.journal.pagination
42-49
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Poverene, Maria Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina
dc.description.fil
Fil: Cantamutto, Miguel Angel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.description.fil
Fil: Seiler, Gerald J.. USDA-ARS Northern Crop Science Laboratory; Estados Unidos
dc.journal.title
Plant Genetic Resources: Characterization and Utilization
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/services/aop-cambridge-core/content/view/A06B3F262BA3B04B2D1EFD27A214015A/S1479262108032048a.pdf/ecological_characterization_of_wild_helianthus_annuus_and_helianthus_petiolaris_germplasm_in_argentina.pdf
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/S1479262108032048
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