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dc.contributor.author
Caponio, I.
dc.contributor.author
Anton, Ana Maria Ramona
dc.contributor.author
Fortunato, Renee Hersilia
dc.contributor.author
Norrmann, Guillermo Alberto
dc.date.available
2016-09-01T18:34:38Z
dc.date.issued
2011-12
dc.identifier.citation
Caponio, I.; Anton, Ana Maria Ramona; Fortunato, Renee Hersilia; Norrmann, Guillermo Alberto; Ploidy dimorphism and reproductive biology in Stenodrepanum bergii (Leguminosae), a rare South American endemism; Natl Research Council Canada-n R C Research Press; Genome; 55; 1; 12-2011; 1-7
dc.identifier.issn
0831-2796
dc.identifier.uri
http://hdl.handle.net/11336/7376
dc.description.abstract
This is the first report on chromosome numbers and the reproductive behaviour in Stenodrepanum Harms, a rare endemic and monotypic legume genus from the arid and salty areas of central–western Argentina. Sixty individuals belonging to two populations from two salty areas (“salinas”) were surveyed and included mostly triploid (2n = 3x = 36) and only two diploid (2n = 2x = 24) plants. Meiosis in diploids is regular, with bivalent pairing and uniform and viable pollen. In contrast, meiosis in triploids is characterized by high trivalent pairing, with irregularly shaped pollen and variation in cytoplasm content and stainability, which is in agreement with an unbalanced segregation occurring in anaphases I and II. However, different triploid plants/individuals showed various degrees of pollen fertility, which may be attributed to particular genotypes. Research on reproductive biology events indicates sexual cross-pollinated reproduction enhanced by protogyny in both cytotypes. All plants produced seeds, but seedlings were only recovered from diploid plants pollinated with triploids, and even those eventually perished. Chromosome counts in these seedlings revealed aneuploid chromosome numbers owing to the combination of unbalanced gametes.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Natl Research Council Canada-n R C Research Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Stenodrepanum.
dc.subject
Fabaceae
dc.subject
Triploids, Diploids
dc.subject
Endemic
dc.subject.classification
Ciencias de las Plantas, Botánica
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Ploidy dimorphism and reproductive biology in Stenodrepanum bergii (Leguminosae), a rare South American endemism
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-06-03T18:11:27Z
dc.journal.volume
55
dc.journal.number
1
dc.journal.pagination
1-7
dc.journal.pais
Canadá
dc.journal.ciudad
Otawa
dc.description.fil
Fil: Caponio, I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
dc.description.fil
Fil: Anton, Ana Maria Ramona. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina
dc.description.fil
Fil: Fortunato, Renee Hersilia. Instituto Nacional de Tecnología Agropecuaria. Centro Nacional de Investigaciones Agropecuarias. Centro de Investigación de Recursos Naturales. Instituto de Recursos Biológicos; Argentina
dc.description.fil
Fil: Norrmann, Guillermo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina. Universidad Nacional del Nordeste; Argentina
dc.journal.title
Genome
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://goo.gl/Yh0PQm
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1139/g11-067
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