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Exemplaires(1)
| Cote | Localisation | Disponibilité |
|---|---|---|
| P0130-5 | Brest | Exclu du prêt |
Dépouillements
Ajouter le résultat dans votre panierA new natural hybrid in the genus Petasites : P. japonicus x P. pyrenaicus (Asteraceae) / Stuart Desjardins in New Journal of botany, vol. 6, n°2-3 (Année 2016)
Titre : A new natural hybrid in the genus Petasites : P. japonicus x P. pyrenaicus (Asteraceae) Type de document : texte imprimé Auteurs : Stuart Desjardins, Auteur ; Arthur G. Hoare, Auteur ; Clive Anthony Stace, Auteur Année de publication : 2016 Article en page(s) : pp. 64-70 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Petasites japonicus
[Espèces (in biblio)] Petasites pyrenaicusMots-clés : hybride isolement géographique cpDNA ITS region Résumé : "A large clone of a Petasites found growing at Borde Hill, East Sussex in 2014, which had been identified as female P. pyrenaicus (P. fragrans), otherwise unknown in Europe as far as we are aware, has been shown by morphological and molecular studies to be the hybrid female P. japonicus × male P. pyrenaicus. The origin of this hybrid, new to science, is unknown, but it has evidently been growing at Borde Hill for several decades, and has now escaped into the wild beside an adjacent footpath." (source : auteurs) Type de publication : périodique Référence biblio : Desjardins S., Hoare A., Stace C., 2016 - A new natural hybrid in the genus Petasites : P. japonicus x P. pyrenaicus (Asteraceae). New Journal of botany, 6 : 64-70. ID PMB : 65351 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65351
in New Journal of botany > vol. 6, n°2-3 (Année 2016) . - pp. 64-70[article]Exemplaires(1)
Cote Localisation Disponibilité P0130-5 Brest Exclu du prêt
Titre : Notes on the Taraxacum (Asteraceae) flora of the Orkney Islands, British Isles (vc 111) Type de document : texte imprimé Auteurs : A. J. Richards, Auteur ; C. C. Ferguson-Smyth, Auteur Année de publication : 2016 Article en page(s) : pp. 71-78 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Asteraceae
[Espèces (in biblio)] TaraxacumMots-clés : pissenlit nouvelle espèce plante endémique description Résumé : "We report the results of a visit to Orkney with the purpose of clarifying our knowledge of endemic and localised Taraxacum (Asteraceae) species on the islands. Two new species are described, the Orkney endemic Taraxacum claudiae A.J. Richards and Taraxacum rufofructum A.J. Richards, the latter being based on Taraxacum rubellum auct. angl. non M.P. Christiansen. Taraxacum calophyllum Dahlst., previously overlooked, is recognised as a distinctive endemic relative of Taraxacum duplidentifrons Dahlst. More localities are reported for Taraxacum orcadense Dahlst., endemic to Orkney, and Taraxacum tanylepis Dahlst., also known from the Outer Hebrides. The number of Taraxacum species reported from Orkney now stands at 55, three of which are endemic to those islands." (source : auteurs) Type de publication : périodique Référence biblio : Richards A.-J., Ferguson-Smyth C.-C., 2016 - Notes on the Taraxacum (Asteraceae) flora of the Orkney Islands, British Isles (vc 111). New Journal of botany, 6 : 71-78. ID PMB : 65352 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65352
in New Journal of botany > vol. 6, n°2-3 (Année 2016) . - pp. 71-78[article]Exemplaires(1)
Cote Localisation Disponibilité P0130-5 Brest Exclu du prêt
Titre : Elm clone identification and the conundrum of the slow spread of Dutch Elm Disease on the Isle of Man Type de document : texte imprimé Auteurs : M. Coleman, Auteur ; S.W. A'Hara, Auteur ; P.R. Tomlinson, Auteur ; P.J. Davey, Auteur Année de publication : 2016 Article en page(s) : pp. 79-89 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Ulmaceae
[Espèces (in biblio)] UlmusMots-clés : génétique microsatellite Résumé : "This study was undertaken as part of a review of Ulmus L. for the forthcoming Flora of the Isle of Man. We have adopted molecular and morphological methods to reassess the identity of Ulmus on the Isle of Man and to explore the possibility that past records of English Elm, a single genotype cultivar called U. minor ‘Atinia’, were misidentifications. First, we utilised seven DNA microsatellite markers to test clone identity in a collection of 23 elms from across the Isle of Man. Sixteen samples were matched to a reference sample of Dutch Elm, U. × hollandica ‘Major’, and one sample was matched to a reference sample of English Elm. In parallel, we appraised a method employed to identify English Elm using a leaf shape metric, and found that leaf width divided by length values > 0.69 are indicative of this clone. Both molecular and morphological results in this study highlight that Dutch Elm has been misidentified as English Elm in the past, and that English Elm may in fact be a rare occurrence on the Island. The susceptibility of U. × hollandica ‘Major’ to Dutch Elm Disease suggests that the unusually slow spread of the disease on the Island is unlikely to be the result of local disease resistance in the elm population. One possibility that we explore is that the Scolytus beetle vector may experience suboptimal climatic conditions that could be limiting its dispersal, thereby reducing the rate of spread of infection." (source : auteurs) Type de publication : périodique Référence biblio : Coleman M., A'Hara S.-W., Tomlinson P.-R., Davey P.-J., 2016 - Elm clone identification and the conundrum of the slow spread of Dutch Elm Disease on the Isle of Man. New Journal of botany, 6 : 79-89. ID PMB : 65353 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65353
in New Journal of botany > vol. 6, n°2-3 (Année 2016) . - pp. 79-89[article]Exemplaires(1)
Cote Localisation Disponibilité P0130-5 Brest Exclu du prêt
Titre : Molecular confirmation of Helosciadium×moorei (H. inundatum x H. nodiflorum; Apiaceae) from County Cork, Ireland Type de document : texte imprimé Auteurs : Stuart Desjardins, Auteur Année de publication : 2016 Article en page(s) : pp. 90-97 Langues : Anglais (eng) Catégories : [ZG] Royaume-Uni
[Espèces (in biblio)] Apiaceae
[Espèces (in biblio)] Apium
[Espèces (in biblio)] Helosciadium x mooreiMots-clés : hybridation phylogénétique Résumé : "Helosciadium x moorei (Apiaceae), collected from County Cork, Ireland, is confirmed as an interspecific hybrid between H. inundatum and H. nodiflorum. The origin of this taxon was investigated using sequence data from a maternally inherited chloroplast marker (rps16-trnK), sequence data from a biparentally inherited nuclear marker (ITS), and fluorescent in situ hybridisation with labelled total genomic probes (GISH). The maternally inherited chloroplast marker identified H. inundatum as the seed-parent, the biparentally inherited nuclear marker identified contributions from two parental species, H. inundatum and H. nodiflorum, and GISH identified two parental genomes in H.x moorei (2n = 22): 11 chromosomes from H. inundatum and 11 chromosomes from H. nodiflorum. No evidence of recombination between parental genomes was detected in the hybrid, which strongly indicates that it is an F1. This definitive molecular and cytogenetic study unequivocally establishes the parentage of H.x moorei for the first time, and confirms the suspicions of generations of botanists." (source : auteur) Type de publication : périodique Référence biblio : Desjardins S., 2016 - Molecular confirmation of Helosciadium×moorei (H. inundatum x H. nodiflorum; Apiaceae) from County Cork, Ireland. New Journal of botany, 6 : 90-97. ID PMB : 65368 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65368
in New Journal of botany > vol. 6, n°2-3 (Année 2016) . - pp. 90-97[article]Exemplaires(1)
Cote Localisation Disponibilité P0130-5 Brest Exclu du prêt
Titre : Speciation in Callitriche (Plantaginaceae) : the allopolyploid origin of C. platycarpa Type de document : texte imprimé Auteurs : Trude Schwarzacher, Auteur ; V. Scrocca, Auteur ; K. Johnson, Auteur ; R. J. Gornall, Auteur Année de publication : 2016 Article en page(s) : pp. 98-101 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Callitriche cophocarpa
[Espèces (in biblio)] Callitriche stagnalis
[Espèces (in biblio)] PlantaginaceaeMots-clés : hybridation polyploïdie génétique Résumé : "Genomic in situ hybridisation (GISH) experiments involving hybridising labelled genomic DNA from the diploid species C. stagnalis, C. obtusangula and C. cophocarpa to chromosome spreads of the tetraploid C. platycarpa (2n =4x =20) show that C. stagnalis and C. cophocarpa DNA each hybridise with a different ten chromosomes of the C. platycarpa complement, whereas C. obtusangula DNA does not differentiate between the two genomes. We conclude on the basis of this and other evidence that C. platycarpa is likely to be an allotetraploid derivative of C. cophocarpa and C. stagnalis. This work demonstrates the successful application of GISH to the study of polyploid evolution in the genus Callitriche." (source : auteurs) Type de publication : périodique Référence biblio : Schwarzacher T., Scrocca V., Johnson K., Gornall R.-J., 2016 - Speciation in Callitriche (Plantaginaceae) : the allopolyploid origin of C. platycarpa. New Journal of botany, 6 : 98-101. ID PMB : 65369 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65369
in New Journal of botany > vol. 6, n°2-3 (Année 2016) . - pp. 98-101[article]Exemplaires(1)
Cote Localisation Disponibilité P0130-5 Brest Exclu du prêt
