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.
Callistephus chinensis (L.) Nees · China aster
Krakowska Hodowla i Nasiennictwo Ogrodnicze POLAN sp. z o.o.
Tulipa L. · Tulip
Testcentrum voor Siergewassen B.V.
Rhododendron L. · Azalea
MANTEN HEINZ
Tulipa L. · Tulip
Marax Tulips V.O.F.
Rosa L. · Rose
Dzidra Rieksta
Rosa L. · Rose
James COCKER & SONS (GB)
Rhododendron L. · Azalea
MANTEN HEINZ
Tulipa L. · Tulip
W. van Lierop & Zonen B.V.
Lilium L. · Lily
De Looff World Breeding B.V.
Gypsophila paniculata L. · Baby's-breath
Maria F.T. Zonderland
Chrysanthemum L. · Chrysanthemum
Zavidova Liudmyla Hnativna, Horobets Vasyl Fedorovych,
Tulipa L. · Tulip
Maatschap J.T.H. en A.C.M. Litjens
Rhododendron simsii Planch. · Indica azalea
SINDERMANN| Bernhard Sindermann
Tulipa L. · Tulip
Maveridge Licensing B.V.
Tulipa L. · Tulip
Vriend Flower Bulbs B.V.
Rosa L. · Rose
Jannik Dräger / Gerhard Dräger
Zinnia elegans Jacq. · Common zinnia
PlantiCo Hodowla i Nasiennictwo Ogrodnicze Golebiew sp. z o.o.
Hippeastrum Herb. · Amaryllis
Gebr. van Velden B.V.
Chrysanthemum x morifolium Ramat. · Florist's daisy
SAS Sauvé-Guittet
Chrysanthemum indicum L. · Indian chrysanthemum
Ets Horticoles Sauve (FR)
Chrysanthemum x morifolium Ramat. · Florist's daisy
SAS Sauvé-Guittet
Tulipa L. · Tulip
Vriend Flower Bulbs B.V.
Pelargonium L'Hér. ex Ait. · Geranium
Ingeborg SCHUMANN (DE)
Rhododendron L. · Azalea
MANTEN HEINZ