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Resumen
Mimosa subseries Dolentes Barneby and Brevipedes Barneby are ecologically and morphologically high-diversified infrageneric taxa of this genus in southern South America. We performed a cytogenetical and morphological analysis of both subseries. Chromosome numbers from accessions throughout the area of distribution were studied. The chromosome numbers 2n = 8x = 104 for M. dolens subsp. callosa (Benth.) Barneby, M. dolens subsp. acerba varieties acerba
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dc.contributor.author | Morales, Matias | |
dc.contributor.author | Fradkin, Eduardo | |
dc.contributor.author | Bessega, Cecilia Fabiana | |
dc.contributor.author | Poggio, Lidia | |
dc.contributor.author | Fortunato, Renee Hersilia | |
dc.date.accessioned | 2019-07-18T17:04:33Z | |
dc.date.available | 2019-07-18T17:04:33Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1030-1887 | |
dc.identifier.issn | 1446-5701 | |
dc.identifier.other | https://doi.org/10.1071/SB16033 | |
dc.identifier.uri | https://bioone.org/journals/Australian-Systematic-Botany/volume-31/issue-2/SB16033/Cytogeography-and-morphological-characterisation-of-a-taxonomic-polyploid-complex-of/10.1071/SB16033.short | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/5530 | |
dc.description.abstract | Mimosa subseries Dolentes Barneby and Brevipedes Barneby are ecologically and morphologically high-diversified infrageneric taxa of this genus in southern South America. We performed a cytogenetical and morphological analysis of both subseries. Chromosome numbers from accessions throughout the area of distribution were studied. The chromosome numbers 2n = 8x = 104 for M. dolens subsp. callosa (Benth.) Barneby, M. dolens subsp. acerba varieties acerba (Benth.) Barneby, latifolia (Benth.) Barneby and rudis (Benth.) Barneby, M. dolens subsp. rigida var. rigescens (Benth.) Barneby, var. anisitsii (Lindm.) Barneby and var. foliolosa (Benth.) Barneby; and 2n = 4x = 52 for M. sceptrum Barneby, M. aff. custodis Barneby and M. dolens var. pangloea Barneby are presented for the first time. Their karyotypes were symmetric, with small chromosomes. There were several areas with taxa growing in sympatry, occasionally with intermediate forms. No diploids were found, which suggests the presence of either a declining polyploid complex or ancient polyploidy in the clade of southernmost representatives of M. series Mimosa, the most derived of the genus. Some vegetative, inflorescence and carpological characters seem to be associated with chromosome duplication. The distribution pattern of the cytotypes suggests events of chromosome duplication in centres of diversity and expansion of octoploids to the southernmost areas of distribution. Our findings support the importance of polyploidy in the morphological diversity, distribution and speciation of this complex. | eng |
dc.format | application/pdf | es_AR |
dc.language.iso | eng | es_AR |
dc.publisher | CSIRO Publishing | es_AR |
dc.rights | info:eu-repo/semantics/restrictedAccess | es_AR |
dc.source | Australian Systematic Botany 31 (2) : 190-208. (2018) | es_AR |
dc.subject | Mimosa | es_AR |
dc.subject | Fabaceae | es_AR |
dc.subject | Poliploidia | es_AR |
dc.subject | Polyploidy | eng |
dc.subject | Taxonomía | es_AR |
dc.subject | Taxonomy | eng |
dc.subject | Morfología Vegetal | es_AR |
dc.subject | Plant Morphology | eng |
dc.subject | Zona Subtropical | es_AR |
dc.subject | Subtropical Zones | eng |
dc.subject | América del Sur | es_AR |
dc.subject | South America | eng |
dc.title | Cytogeography and morphological characterisation of a taxonomic, polyploid complex of Mimosa (Leguminosae) from subtropical South America | es_AR |
dc.type | info:ar-repo/semantics/artículo | es_AR |
dc.type | info:eu-repo/semantics/article | es_AR |
dc.type | info:eu-repo/semantics/publishedVersion | es_AR |
dc.description.origen | Instituto de Recursos Biológicos | es_AR |
dc.description.fil | Fil: Morales, Matias. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Morón. Facultad de Agronomía y Ciencias Agroalimentarias; Argentina | es_AR |
dc.description.fil | Fil: Fradkin, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias. Cátedra de Mejoramiento Genético; Argentina | es_AR |
dc.description.fil | Fil: Bessega, Cecilia Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina | es_AR |
dc.description.fil | Fil: Poggio, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina | es_AR |
dc.description.fil | Fil: Fortunato, Renee Hersilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad de Morón. Facultad de Agronomía y Ciencias Agroalimentarias; Argentina | es_AR |
dc.subtype | cientifico |
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