Variety traits
Reversion virus
In crop production, the term refers to two distinct concepts: a decorative trait characterized by an increased number of petals in flowers, or a dangerous viral disease of blackcurrants that causes sterility.
Mentioned in descriptions 16 231 varieties reference book.
In ornamental horticulture, double flowering is a varietal characteristic expressed by an increased number of petals in a flower to enhance aesthetic appeal. In the case of blackcurrants, double flowering, or reversion, manifests as a viral disease in which flowers are deformed into purple outgrowths, leaves lose their shape, and the plant becomes sterile.
This trait is assessed as a qualitative phenotypic indicator. In ornamental crops, double flowering is recorded during variety trials either visually or by using scoring systems for ornamental quality. Regarding currants, double flowering is considered a critical symptom, the presence of which requires phytosanitary culling of infected specimens.
Resistance of a variety to pathological reversion is determined by the genetic ability to withstand the virus and its vector, the currant bud mite. When choosing planting material for a garden, preference should be given to varieties with proven genetic resistance, as there are no numerical units of measurement for this trait.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Tulipa L. · Tulip
Q.J. Vink & Zn. B.V./C.W. van der Hulst Bloembollen B.V./Maveridge Licensing B.V.
Lilium L. · Lily
Rooijakkers Breezand B.V.
Rosa L. · Rose
Hans-Juergen Evers
Narcissus L. · Daffodil
Maveridge Licensing B.V.
Narcissus L. · Daffodil
Maveridge Licensing B.V.
Tulipa L. · Tulip
Remarkable C.V.
Rosa L. · Rose
TANTAU NACH| Rosen Tantau Mathias Tantau Nachfolger
Rosa L. · Rose
Tantau, Mathias
Gerbera jamesonii Bolus ex Hook. f. · Barberton daisy
Terra Nigra BV (NL)
Chrysanthemum indicum L. · Indian chrysanthemum
William E. DUFFETT (US)/JESSEL H. WALTER (FR)
Rhododendron L. · Azalea
OTTO STAHNKE & ELEONORE DETTMER
Tulipa L. · Tulip
Testcentrum voor Siergewassen B.V.
Lilium L. · Lily
Mak Breeding Rights B.V./Arroyo Rights B.V.
Clematis L. · Clematis
Uno Kivistik, Aili Kivistik
Tulipa L. · Tulip
Sneekes-Wijnker
Rosa L. · Rose
Mathias Tantau (DE)
Helianthus annuus L. · Sunflower
PANAM FRANCE SARL, FR
Rhododendron simsii Planch. · Indica azalea
Hermann Glaser
Paeonia L. · Peony
Horobets` Vasyl` Fndorovych
Chrysanthemum L. · Chrysanthemum
Sholokhova Tetiana Oleksandrivna
Lilium L. · Lily
Mak Breeding Rights B.V./Arroyo Rights B.V.
Lilium L. · Lily
Mak Breeding Rights B.V./Arroyo Rights B.V.
Zea mays L. · Maize
Dr. K.L. Nau, Dr. P.G.Goertz,
Tulipa L. · Tulip
Marax Tulips V.O.F.