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A taxonomic survey of the genus Vitis L. (Vitaceae) in Italy, part II : the ‘Euro-American’ hybrids / Nicola M. G. Ardenghi in Phytotaxa, vol. 224, n°3 (Année 2015)
[article]
Titre : A taxonomic survey of the genus Vitis L. (Vitaceae) in Italy, part II : the ‘Euro-American’ hybrids Type de document : Livre Auteurs : Nicola M. G. Ardenghi, Auteur ; Enrico Banfi, Auteur ; Gabriele Galasso, Auteur Année de publication : 2015 Article en page(s) : pp. 232-246 Langues : Anglais Catégories : [ZG] Italie Mots-clés : plante hybride plante naturalisée systématique morphologie des graines Résumé : "New names are assigned to two ‘Euro-American’ nothospecies of Vitis originating from the artificial crossing of Euro-Mediterranean V. vinifera with two American species, employed both as rootstocks and for wine production, and spontaneously occurring in Italy and other European countries: V. ×bacoi (= V. riparia × V. vinifera) and V. ×goliath (= V. riparia × V. rupestris × V. vinifera). Original and detailed descriptions, illustrations and information on distribution and ecology are provided, along with an updated identification key. Late-season leaf pigmentation, presence/absence of phylloxera galls, ripe berries flavor, and seed morphology proved to be useful characters for the identification of the treated species and nothospecies. Nomenclatural aspects regarding V. riparia × V. vinifera are also discussed." (source : auteurs) Type de publication : périodique Référence biblio : Ardenghi N.-G., Banfi E., Galasso G., 2015 - A taxonomic survey of the genus Vitis L. (Vitaceae) in Italy, part II : the ‘Euro-American’ hybrids. Phytotaxa, 224 (3) : 232-246. ID PMB : 69131 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69131
in Phytotaxa > vol. 224, n°3 (Année 2015) . - pp. 232-246[article]Exemplaires
Cote Localisation Disponibilité aucun exemplaire Flood induced phenotypic plasticity in amphibious genus Elatine (Elatinaceae) / Attila Molnar in PeerJ, 3 (2015)
[article]
Titre : Flood induced phenotypic plasticity in amphibious genus Elatine (Elatinaceae) Type de document : Livre Auteurs : Attila Molnar, Auteur ; János Pál Tóth, Auteur ; Gábor Sramkó, Auteur ; Orsolya Horváth, Auteur ; Agnieszka Janiak, Auteur ; Attila Mesterházy, Auteur ; Balázs Andras Lukacs, Auteur Année de publication : 2015 Article en page(s) : e1473 Langues : Anglais Mots-clés : adaptation macrophyte morphologie des graines culture graine charactéristique végétative Résumé : "Vegetative characters are widely used in the taxonomy of the amphibious genus Elatine L. However, these usually show great variation not just between species but between their aquatic and terrestrial forms. In the present study we examine the variation of seed and vegetative characters in nine Elatine species (E. brachysperma, E. californica, E. gussonei, E. hexandra, E. hungarica, E. hydropiper, E. macropoda, E. orthosperma and E. triandra) to reveal the extension of plasticity induced by the amphibious environment, and to test character reliability for species identification. Cultivated plant clones were kept under controlled conditions exposed to either aquatic or terrestrial environmental conditions. Six vegetative characters (length of stem, length of internodium, length of lamina, width of lamina, length of petioles, length of pedicel) and four seed characters (curvature, number of pits / lateral row, 1st and 2nd dimension) were measured on 50 fruiting stems of the aquatic and on 50 stems of the terrestrial form of the same clone. MDA, NPMANOVA Random Forest classification and cluster analysis were used to unravel the morphological differences between aquatic and terrestrial forms. The results of MDA cross-validated and Random Forest classification clearly indicated that only seed traits are stable within species (i.e., different forms of the same species keep similar morphology). Consequently, only seed morphology is valuable for taxonomic purposes since vegetative traits are highly influenced by environmental factors." (source : auteurs) Type de publication : périodique Référence biblio : Molnar A., Pál Tóth J., Sramkó G., Horváth O., Janiak A., Mesterházy A., Lukacs B., 2015 - Flood induced phenotypic plasticity in amphibious genus Elatine (Elatinaceae). PeerJ, 3 : e1473. ID PMB : 65364 En ligne : https://peerj.com/articles/1473.pdf Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65364
in PeerJ > 3 (2015) . - e1473[article]Exemplaires
Cote Localisation Disponibilité aucun exemplaire