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Are minature roses grafted to understock in Europe?
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Posted by Henry_Kuska z5 OH (My Page) on Fri, Nov 1, 02 at 17:01
It is my understanding that in the U.S. minature roses are most often own root plants. I would like to know what the common practice is in Europe, especially southern Europe such as in Spain.
The reason for my question is that there was a report of a lot of virus found in minature roses by a Spanish group (see the "Virused Roses in Europe" thread on this foreum).
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Follow-Up Postings:
RE: Are minature roses grafted to understock in Europe?
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| Hello, No, the miniature roses are not grafted even in Europe.
They are multiplied by cuttings, be it in Spain other in Denmark -the main source for these roses in Europe-.
It is even the reason why they are very winter-hardy.
It is a pity no nursery do so in Europe for the garden roses as well!
See you,
Pete. |
RE: Are minature roses grafted to understock in Europe?
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| Henry If florist's potted flowering miniatures are mostly cutting grown by horticulturists, commercial nurseries are selling these roses as grafted plants. Much larger than the US own rooted ones.
Another difference is that there is no specialized miniature roses nursery here. Even if we have with Poulsen the leading florist minis breeder. Amicalement votre
Pierre Rutten |
RE: Are minature roses grafted to understock in Europe?
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Hello Pete,
There is at least one nursery in Europe that I know of that cultivates and sells roses on their own roots. Here's a link. |
Here is a link that might be useful: Hortensis
RE: Are minature roses grafted to understock in Europe?
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| In England nearly all nursery supplied miniatures are budded. Some, but not many are grown by micropropagation. The place where you will most often see cuttings or microprops sold is the supermarket; the usual source of these is Holland. Therefore if you are looking for budded, named, specialist (US) miniatures, the only place you can buy them in England is a rose nursery such as C and K Jones. |
RE: Are minature roses grafted to understock in Europe?
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The reason that I asked this question is that in a Spanish paper minatures had a high rate of virus infection which the authors attributed to pollen infection. They did not state whether the minatures were own root or grafted plants. Has there been any discussion of this finding in Europe?
Title: "Incidence of Rose Viruses in Spain"
Authors: M. Cambra, J.L. Martinez-Torres, M.J. Benaches, E. Camarasa, and M.T. Gorris.
Published in: Acta Horticulturae, volumn 246,pages 309-312, (1989).
They found 4.2% of the roses had Prunus necrotic ring spot virus. The breakdown was: 44.0 % of the minatures, 1.1 % of the hybrid teas, and 1.5 % of those budded on Manetti rootstocks. They state: "The high rate of PNRSV contamination in minature varieties seems to be associated to their long existence as opposed to little contamination in the hybrid varieties which were more recently established. The rate of contamination in Manetti rootstock is quite low; this is probably due to the usual nursery practice of preventing mother plants from flowering. Manetti plants giving PNRSV positive, might have been graft-contaminated in the most part."
Later in another paragraph they say:"....since this virus is pollen transmitted (in addition to grafting)."
They studied 4,730 rose samples, which they state "included all varieties and rootstocks most commonly grown in Spain for cut flower rose cultivation. They were collected from a number of nurseries and commercial plantings." |
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