Artículo
Karyotype analysis in several South American species of Solanum and Lycianthes rantonnei (Solanaceae)
Acosta, María Cristina
; Bernardello, Gabriel Luis Mario
; Guerra, Marcelo; Moscone, Eduardo Alberto
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Fecha de publicación:
08/2005
Editorial:
International Association for Plant Taxonomy
Revista:
Taxon
ISSN:
0040-0262
e-ISSN:
1996-8175
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Somatic chromosomes of 17 species belonging to 4 subgenera and 7 sections of Solanum and Lycianthes rantonnei are studied. All taxa have 2n = 24. The chromosome numbers of S. tripartitum, S. tenuispinum, and S. vaillantii
are reported for the first time, and the karyotype analysis of L. rantonnei is the first one for the genus.
Morphometric chromosome analyses bring estimates of karyotype composition and asymmetry. In general, karyotypes are symmetrical with the chromosomes smaller than 4 µm long, being metacentric (69%), submetacentric (24%), or more rarely subtelocentric (7%). Solanum tucumanense, S. palinacanthum, and Solanum
sp. (Acanthophora) are unique by having mostly sm and st chromosomes. All species have nucleolar organizing regions and attached satellites of variable size on short arms of one chromosome pair, usually sm or st. All species can be cytologically distinguished. Karyotype data do not allow separation of L. rantonnei from species of Solanum. Results support the validity of S. tucumanense with respect to S. pseudocapsicum. Using chromosome data exclusively, cluster analysis in 10 species from Solanum subgen. eptostemonum reinforce the systematic arrangement of taxa in subsections based on morphological features. Because of its increased karyotype asymmetry, section Acanthophora appears to be an advanced taxon within subgen. Leptostemonum.
Palabras clave:
Karyotype Evolution
,
Lycianthes
,
Solanum
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos(INIBIOMA)
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Citación
Acosta, María Cristina; Bernardello, Gabriel Luis Mario; Guerra, Marcelo; Moscone, Eduardo Alberto; Karyotype analysis in several South American species of Solanum and
Lycianthes rantonnei (Solanaceae); International Association for Plant Taxonomy; Taxon; 54; 3; 8-2005; 713-723
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