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| Chiarini,Franco E; Gauthier,Martha J. |
| The chromosomes of Solanum nelsonii, S. sandwicense (endemic to the Hawaii islands) and S. vespertilio (from the Canary islands) were studied by means of classical staining, CMA/DAPI banding and FISH with probes for the 18-5.8-26S and 5S rDNA genes. The aim of this study was to test for chromosomal changes (chromosome number, karyotype, heterochromatin pattern, rDNA loci) during the evolution of these taxa with respect to their continental relatives. An apparent chromosome stasis was confirmed in all three species, in regards to chromosome number and karyotype morphology. However, there was also evidence of cryptic, cumulative sequence changes. Speciation in these species is not likely associated with large, obvious chromosome rearrangements or polyploidy,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chromosome stasis; Heterochromatin; Ribosomal DNA; Solanum subgen; Leptostemonum. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000200009 |
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| Cantero,Juan J; Barboza,Gloria E; Chiarini,Franco E; Deanna,Rocio; Ariza Espinar,L; Giorgis,Melisa A; Núñez,Cesar O; Bernardello,Gabriel. |
| Con motivo de estar preparando la Flora de Córdoba, han surgido numerosas novedades para la flora argentina, a raíz de haberse intensificado los viajes de campo y la revisión de las colecciones de los principales herbarios del país. En este trabajo se dan a conocer tres nuevas citas para la flora nativa y 17 para la flora introducida de la Argentina (especies casuales y naturalizadas). Se describen e ilustran los nuevos registros y se realiza una lectotipificación. Además, se documenta formalmente por primera vez la presencia de 10 especies introducidas. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nuevos registros; Flora introducida; Flora nativa; Argentina; Lectotipificación. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000100016 |
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