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Determination of taxa of the Achillea millefolium qroup and Achillea crithmifolia by morphological and hytochemical methods I. Characterisation of Central European taxa / Florian Rauchensteiner in Scientia pharmaceutica, vol. 70, n°2 (Année 2002)
[article]
Titre : Determination of taxa of the Achillea millefolium qroup and Achillea crithmifolia by morphological and hytochemical methods I. Characterisation of Central European taxa Type de document : périodique Auteurs : Florian Rauchensteiner, Auteur ; Shahbaz Nejati, Auteur ; Ingrid Werner, Auteur ; Sabine Glasl, Auteur ; Johannes Saukel, Auteur ; Johann Jurenitsch, Auteur ; Wolfgang Kubelka, Auteur Année de publication : 2002 Article en page(s) : pp. 199-230 Langues : Anglais Catégories : [Espèces (in biblio)] Achillea collina
[Espèces (in biblio)] Achillea setacea
[Thèmes] Clé de déterminationMots-clés : morphométrie ploïdie Résumé : "A survey of morphological and phytochemical data characteristic for several taxa of the Achillea millefoliurn group (A. aspleniifolia VENT., A. roseoalba EHREND., A. collina J. BECKER ex REICHENB., A. ceretanica SENNEN, A. setacea W. ET K., A. pratensis SAUKEL & LANGER, A. styriaca SAUKEL ined., A. pannonica SC H E ELE, A. distans W. ET K., A. millefolium s. I., A. millefolium ssp. sudetica OPIZ) and A. crithmifolia W. ET K. is presented. For each taxon a short morphological description and a guide for microscopic analysis is given as well as its sesquiterpene composition including the TLC characteristics. Based on GLC analyses of 1523 single plants collected in Central Europe the sums of sabinene + β-pinene + β-caryophyllene (SUM I), a-pinene + 1,8-cineole (SUM 2), camphene + camphor + borneol (SUM 3), camphene + camphor (SUM 4) and 1,8-cineole + borneol (SUM 5) were found to be highly significant for distinct taxa or groups of taxa." (source : auteurs) Type de publication : périodique Référence biblio : Rauchensteiner F., Nejati S., Werner I., Glasl S., Saukel J., Jurenitsch J., Kubelka W., 2002 - Determination of taxa of the Achillea millefolium qroup and Achillea crithmifolia by morphological and hytochemical methods I. Characterisation of Central European taxa. Scientia pharmaceutica, 70 (2) : 199-230. ID PMB : 71873 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=71873
in Scientia pharmaceutica > vol. 70, n°2 (Année 2002) . - pp. 199-230[article]Exemplaires
Cote Localisation Disponibilité aucun exemplaire Impact of interspecific hybridization within a polyploid agamic complex of Pilosella (Asteraceae, Cichorieae) in Bulgaria compared with Central Europe / Anna Krahulcová in Willdenowia, vol. 48, n°3 (Année 2018)
[article]
Titre : Impact of interspecific hybridization within a polyploid agamic complex of Pilosella (Asteraceae, Cichorieae) in Bulgaria compared with Central Europe Type de document : Livre Auteurs : Anna Krahulcová, Auteur ; Frantisek Krahulec, Auteur ; Vladimir Vladimirov, Auteur Année de publication : 2018 Article en page(s) : pp. 345-362 Langues : Anglais Catégories : [Espèces (in biblio)] Hieracium
[Espèces (in biblio)] Pilosella
[ZG] Europe centrale
[Thèmes] ApomixieMots-clés : Cichorieae hybridation microévolution ploïdie reproduction gamète Résumé : "The species-mixed Pilosella populations comprising diploid sexual and polyploid facultatively apomictic biotypes were studied in Bulgaria. Parentage of co-occurring recent hybrids was inferred from a combination of morphology and ploidy level that corresponded to simple/multiple crosses of basic species via either reduced or unreduced gametes. The flow cytometric seed screening illustrated the capacity for heteroploid hybridization both in open-pollinated plants in the mixed-ploidy populations and in crossing experiments. The diploid sexual species in Bulgaria have a limited impact on interspecific hybridization, and simple inter-cytotype hybrids are only sporadically formed. The origin of the most common hybrids in Bulgaria that are apomictic and retain the pentaploid/hexaploid ploidy level of a co-occurring putative apomictic parent remains unclear. The absence of stabilized hybridogeneous species and scarcity of commonly hybridizing polyploid sexual biotypes are crucial attributes that distinguish the Pilosella populations in Bulgaria from those in the Czech Republic and Germany. No recent high-polyploid hybrids of 2n + n origin that would potentially become drivers of ongoing hybridization in the mixed sexual-apomictic Pilosella populations similar to those in Central Europe have been recorded in Bulgaria. The pattern of co-occurring cytotypes in Bulgaria likely limits interspecific hybridization due to stronger ploidy barriers." (source : auteurs) Type de publication : périodique Référence biblio : Krahulcová A., Krahulec F., Vladimirov V., 2018 - Impact of interspecific hybridization within a polyploid agamic complex of Pilosella (Asteraceae, Cichorieae) in Bulgaria compared with Central Europe. Willdenowia, 48 (3) : 345-362. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=68062
in Willdenowia > vol. 48, n°3 (Année 2018) . - pp. 345-362[article]Exemplaires
Cote Localisation Disponibilité P0170 Brest Exclu du prêt