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Titolo:
The genus Sorbus (Maloideae, Rosaceae) in Europe and in North Africa: Morphological analysis and systematics
Autore:
Aldasoro, JJ; Aedo, C; Navarro, C; Garmendia, FM;
Indirizzi:
CSIC, Real Jardin Bot, E-28014 Madrid, Spain CSIC Madrid Spain E-28014CSIC, Real Jardin Bot, E-28014 Madrid, Spain Univ Complutense, Fac Farm, Dept Biol Vegetal 2, E-28040 Madrid, Spain Univ Complutense Madrid Spain E-28040 l Vegetal 2, E-28040 Madrid, Spain
Titolo Testata:
SYSTEMATIC BOTANY
fascicolo: 2, volume: 23, anno: 1998,
pagine: 189 - 212
SICI:
0363-6445(199804/06)23:2<189:TGS(RI>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRUIT CHARACTERISTICS; TARAXACUM ASTERACEAE; SPECIES CONCEPTS; EVOLUTION; DISPERSAL; PATTERNS; APOMIXIS; SUBFAM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
54
Recensione:
Indirizzi per estratti:
Indirizzo: Aldasoro, JJ CSIC, Real Jardin Bot, Plaza Murillo 2, E-28014 Madrid, SpainCSIC Plaza Murillo 2 Madrid Spain E-28014 8014 Madrid, Spain
Citazione:
J.J. Aldasoro et al., "The genus Sorbus (Maloideae, Rosaceae) in Europe and in North Africa: Morphological analysis and systematics", SYST BOT, 23(2), 1998, pp. 189-212

Abstract

A multivariate morphometric study of the genus Sorbus, from 127 herbarium specimens in Europe and North Africa and nine populations in Spain, shows that twelve species may be easily recognized in the area: S. in the area: S.torminalis, S. latifolia, S. semiincisa, S. aria, S. intermedia, S. minima, S. sudetica, S. chamaemespilus, S. aucuparia, S. hybrida, S. meinichii and S. domestica. Twenty-seven described taxa were very difficult to discriminate using the standard morphological and statistical methods. Some useful characters are: petiole length, leaf-nerve angle, leaf-tooth length, bud and seed shape, fruit structure, presence of tanniferous-cell groups, large sclereids and starch grains in the fruit. The fruit of S. torminalis has a multi-layered cuticle, not previously reported in Sorbus. We detect-ed tetraploidy in S. torminalis and two other sexuals: S. aria and S. chamaemespilus. The geography and the population structure of taxa in S and C Europe does not permit their reproductive isolation; hence a large number of intermediate forms occur. Considering the difficulty in assessing the reproductive isolation of microspecies and in differentiating them morphologically, the use of a taxonomic species concept is proposed in Sorbus. Finally, a key tothe species is provided.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 00:48:52