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'Bleu Magenta' rose Reviews & Comments
Discussion id : 129-682
most recent 15 NOV 21 HIDE POSTS
 
Initial post 14 NOV 21 by Daniel from Normandy
Bonjour,
La référence aux Grandes Roseraies du Val de Loire est erronée concernant la date d'obtention de 'Bleu magenta' et le nom de l'obtenteur. Il faut lire entre les lignes pour voir que ce qu'ils appellent "nouveautés" signifie nouveauté dans leur commercialisation, pas la date d'obtention. D'ailleurs, les gens qui ont fait une recherche sur cette rose arrivent aux dates de 1900-1910, pas les années 1930. Dans les nouveautés de 1933 du catalogue de 1935 figurent des roses de Lens, Pernet-Ducher, Barbier ...
Amicalement,
Daniel
REPLY
Reply #1 of 1 posted 15 NOV 21 by jedmar
Grandes Roseraies est mentionné comme obtenteur car c'est la plus ancienne mention connue à nous. Si vous connaissez des références antérieures à 1910, nous pouvons corriger cela. Peut-être avez-vous les catalogues Barbier?
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Discussion id : 119-698
most recent 7 JAN 20 HIDE POSTS
 
Initial post 7 JAN 20 by CybeRose
Journal of Agricultural and Food Chemistry 51: 4990-4994. (2003)
Origin of the Color of Cv. 'Rhapsody in Blue' Rose and Some Other So-called “Blue” Roses.
Jean-François Gonnet

Cyanin is probably "trapped" into AVIs at higher concentrations than would be possible in a vacuolar solution and in quinonoidal form, appearing purple-blue because of additional absorption in the 580-630 nm area. Quite similar pigmentation features were found in very ancient rose cultivars (cv. L’Evêque or Bleu Magenta), also displaying this type of so-called "blue" color.
REPLY
Discussion id : 107-508
most recent 19 JAN 18 HIDE POSTS
 
Initial post 19 JAN 18 by Andrew from Dolton
Graham Stuart Thomas. CLIMBING ROSES OLD & NEW, published 1965 Aldine Press, Letchworth, Herts.
p.64
Bleu Magenta. This rose reached me from the Roseraie de l'Haÿ near Paris, but I have been unable to trace the name anywhere. This is unfortunate, since it is that largest in flower and the richest in colour of the purplish ramblers. Fully double the flowers in dense clusters, darkest violet-crimson fading tom dark parma-violet and grey, with an occasional white fleck. Practically scentless. Shining dark green leaves on nearly thornless green wood. An effective garden plant. About 15 feet. The last to flower of the purple ramblers.
REPLY
Reply #1 of 1 posted 19 JAN 18 by Patricia Routley
Thanks again Andrew.
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