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Abstract:

Senna series Aphyllae includes xeromorphic shrubs and subshrubs that occur in three different biogeographic subregions in arid and semi-arid habitats of southern South America. The series provides a good opportunity to understand better the relationship among geographical, climatic, and morphological variation in different taxa. Moreover, in this group the specific and varietal delimitation is still problematic due to the high morphological variation within and among taxa. Statistical analyses of climatic and morphological data and geographical distribution were used to understand the patterns of morphological variation among 394 individuals and to clarify the taxonomic delimitation of entities that belong to series Aphyllae. Senna acanthoclada and S. nudicaulis were segregated from each other and from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spiniflora was well-delimited and S. crassiramea and S. rigidicaulis were overlapping; S. pachyrrhiza was not differentiated from S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditions for several species. The results of this work revealed that most morphological variability is associated with different environmental conditions. This phenotypic plasticity may be caused by the presence of different environments with climatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province. © 2017 The Linnean Society of London.

Registro:

Documento: Artículo
Título:Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
Autor:Robbiati, F.O.; Amarilla, L.D.; Anton, A.M.; Fortunato, R.H.
Filiación:Estación Experimental Agropecuaria, INTA, Ruta Nac. 68-km 172, 4403 Cerrillos, Prov. de Salta, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CABA, Rivadavia 1917, Argentina
Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Córdoba, Vélez Sarsfield 1611-X5016GCA, Córdoba, Prov. de Córdoba, Argentina
Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Ciudad de Córdoba, Prov. De Córdoba, Argentina
Instituto de Recursos Biológicos, INTA, Nicolas Repetto y de Los Reseros s/no, 1686 Hurlingham, Prov. de Buenos Aires, Argentina
Facultad de Agronomía y Ciencias Agroalimentarias, Universidad de Morón, Cabildo 134, 6o piso, 1708 Morón, Prov. de Buenos Aires, Argentina
Palabras clave:Ecological niche modelling; Geographical distribution; Multivariate analysis; Taxonomic status; Caesalpinioideae; Fabaceae; Senna; Senna crassiramea
Año:2017
Volumen:183
Número:3
Página de inicio:454
Página de fin:473
DOI: http://dx.doi.org/10.1093/botlinnean/bow012
Título revista:Botanical Journal of the Linnean Society
Título revista abreviado:Bot. J. Linn. Soc.
ISSN:00244074
CODEN:BJLSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244074_v183_n3_p454_Robbiati

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Citas:

---------- APA ----------
Robbiati, F.O., Amarilla, L.D., Anton, A.M. & Fortunato, R.H. (2017) . Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae). Botanical Journal of the Linnean Society, 183(3), 454-473.
http://dx.doi.org/10.1093/botlinnean/bow012
---------- CHICAGO ----------
Robbiati, F.O., Amarilla, L.D., Anton, A.M., Fortunato, R.H. "Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)" . Botanical Journal of the Linnean Society 183, no. 3 (2017) : 454-473.
http://dx.doi.org/10.1093/botlinnean/bow012
---------- MLA ----------
Robbiati, F.O., Amarilla, L.D., Anton, A.M., Fortunato, R.H. "Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)" . Botanical Journal of the Linnean Society, vol. 183, no. 3, 2017, pp. 454-473.
http://dx.doi.org/10.1093/botlinnean/bow012
---------- VANCOUVER ----------
Robbiati, F.O., Amarilla, L.D., Anton, A.M., Fortunato, R.H. Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae). Bot. J. Linn. Soc. 2017;183(3):454-473.
http://dx.doi.org/10.1093/botlinnean/bow012