[article]
| Titre : |
The taxonomic separation of the cytological races of Kohlrauschia prolifera (L.) Kunth sensu lato |
| Auteurs : |
P. W. Ball, Auteur ; Vernon Hilton Heywood (1927-….), Auteur |
| Année de publication : |
1962 |
| Article en page(s) : |
pp. 113-116 |
| Langues : |
Anglais (eng) |
| Catégories : |
[Espèces (in biblio)] Kohlrauschia nanteuilii
[Espèces (in biblio)] Kohlrauschia prolifera
[Espèces (in biblio)] Kohlrauschia velutina
|
| Mots-clés : |
comparaison d'espèces |
| Résumé : |
"It has been realised for some considerable time that Kohlrauschia prolifera (L.) Kunth contains both diploid and tetraploid plants (Blackburn, 1933, Bocher et al., 1953, 1955). The cytotypes appear to have different distributions, the more widespread diploid being replaced in W.S.W. Europe by the tetraploid. Because of the close morphological similarity between the cytotypes, and the difficulty of separating them, K. prolifera has come to be widely referred to in the literature as an example of the phenomenon of semi-cryptic polyploidy (cf. Heywood, 1958, Larsen, 1960). In the course of a revision of the whole genus, we have had occasion to make a detailed study of the K. prolifera group, as a result of which it has become apparent that not only can the diploid and tetraploid races be separated fairly satisfactorily on the basis of their seed-coat morphology, but the differences had been recognised precisely many years previously. Although it has usually been assumed that the tetraploids have arisen from the diploids by autoploidy, the morphological evidence suggests that another diploid species, K. velutina (Guss.) Reichb., is involved and that the tetraploid has been formed as a result of allopolyploidy between it and diploid K. prolifera." (source : auteurs) |
| Type de publication : |
périodique |
| Référence biblio : |
Ball P.-W., Heywood V., 1962 - The taxonomic separation of the cytological races of Kohlrauschia prolifera (L.) Kunth sensu lato. Watsonia, 5 (3) : 113-116. |
| ID PMB : |
72176 |
| En ligne : |
https://archive.bsbi.org.uk/Wats5p113.pdf |
| Format de la ressource électronique : |
document |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=72176 |
in Watsonia > vol. 5, n°3 (Année 1962) . - pp. 113-116
[article]
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