RELACIONES FENÉTICAS ENTRE LAS ESPECIES DE BERBERIS
(BERBERIDACEAE) DEL NOROESTE DE LA REGIÓN PATAGÓNICA
MARÍA C. J. BOTTINI 1, MARÍA C.
ORSI, EDUARDO J. GREIZERSTEIN 1,2 & LIDIA POGGIO 1,2
- 1 Dpto. de Ciencias Biológicas,
Facultad de Ciencias Exactas y Naturales, Universidad de
Buenos Aires, 1428 Nuñez, Capital Federal, Argentina.
- 2 Centro de Investigaciones
Genéticas (UNLP-CONICET-CIC), Casilla de Correo 4, 1836
Llavallol, Buenos Aires, Argentina.
- ABSTRACT: Bottini M. C. J., Orsi, M. C., Greizerstein, E.
J. & Poggio, L. 1998. Phenetic relationships among
species of Berberis (Berberidaceae) from NW Patagonia. Darwiniana 35:
115-129.
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- Phenetic relationships among 11 species belonging to the
genus Berberis from 46 populations of NW
Patagonia Argentina, were studied using numerical
techniques. The species are B. bidentata Lechl.,
B. buxifolia Lam., B. cabrerae Job, B.
chillanensis Sprag. ex Sandwith, B. darwinii Hook.,
B. empetrifolia Lam., B. heterophylla
Juss., B. linearifolia Phil., B. montana Gay,
B. parodii Job and B. serrato-dentata
Lechl. Fifty four morphological characters were defined
(24 vegetative and 30 reproductive). Forty six
populations (with a total of 288 individuals) were
analyzed. Two main groups were distinguished from the
phenogram. One consists of the populations of 10 spiny
species; the other one is only formed by populations of
B. serrato-dentata (without - or rarely / with
scarce little weak - spines). Numerical analysis allowed
to differentiate the species studied and each of the
populations within a same species. This may be related to
microambiental agents conditioning the phenotype. The
results here obtained agree fairly well with the
interespecific relationships previously published in the
genus Berberis.
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- Key words: Phenetic relationships, Morphology, Berberis, Berberidaceae.
- Palabras clave: Relaciones fenéticas, Morfología, Berberis,
Berberidaceae.