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.
Chrysanthemum indicum L. · Indian chrysanthemum
Th. Plak V.O.F.
Callistephus chinensis (L.) Nees · China aster
PlantiCo Hodowla i Nasiennictwo Ogrodnicze Golebiew sp. z o.o.
Tulipa L. · Tulip
Mellema-Versteeg B.V.
Nigella damascena L. · Love-in-a-mist
Maatschap Voskamp-Hoogerbrugge
Lilium L. · Lily
De Looff World Breeding B.V.
Chrysanthemum indicum L. · Indian chrysanthemum
Bernard SAS (FR)
Tulipa L. · Tulip
Vertuco B.V.
Freesia Eckl. ex Klatt · Freesia
Van den Bos Freesia B.V.
Clematis L. · Clematis
Szczepan Marczyński
Tulipa L. · Tulip
Vertuco B.V.
Tulipa L. · Tulip
J.P. Boon
Paeonia lactiflora Pall. · Chinese peony
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Rosa L. · Rose
Iuroaea Gheorghe
Nerium oleander L. · Oleander
Pepinieres Jean REY SA (FR)
Gerbera jamesonii Bolus ex Hook. f. · Barberton daisy
Gospodarstwo Ogrodnicze Gerbera Jan Bogusz
Chrysanthemum indicum L. · Indian chrysanthemum
Bernard Innovation Vegetale (BIV) Sarl (FR)
Rosa L. · Rose
Pep. Jacques BRIANT SA (FR)
Calluna vulgaris (L.) Hull · Common heather
Robert Nielsen (Soltauer Baumschulen)
Lilium L. · Lily
Vletter & Den Haan Beheer B.V
Rosa L. · Rose
Stanisław Żyła
Hippeastrum Herb. · Amaryllis
MIYAKE NURSERY.LTD
Chrysanthemum L. · Chrysanthemum
C.B.A Research B.V.
Rosa L. · Rose
Beate Wilczynski