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.
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
GOLDSMITH SEEDS
Rosa L. · Rose
Pepinieres et Roseraies Georges Delbard| FR
Rosa L. · Rose
Poulsen Roser A/S
Chrysanthemum L. · Chrysanthemum
Wain Peter
Euphorbia fulgens Karw. ex Klotzsch · Scarlet plume
Marius Anthonius Koppert / Fransiscus Anthonius Maria Didden / L.P.M. van Santen (+)
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
SCHUMANN INGEBORG
Dianthus caryophyllus L. · Carnation
West Stek B.V.
Dianthus caryophyllus L. · Carnation
BARBERET & BLANC, S.A.
Chrysanthemum x morifolium Ramat. · Florist's daisy
CHALLET PAUL| Paul Challet
Begonia L. · Begonia
Gunnar Pedersen
Dianthus caryophyllus L. · Carnation
LAB.PHI.VE.BARBERET&BLANC
Zea mays L. · Maize
Bc Institut, HR
Gerbera L. · Gerbera
VAN HOLSTEIN WILHELMUS MARTINUS JOSEF
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
SCHUMANN INGEBORG
Begonia x hiemalis Fotsch · Elatior Begonia
Gunnar PEDERSEN (DK)
Dianthus caryophyllus L. · Carnation
LABOR.PHYSILOGIE VEGETAL
Dianthus L. · Carnation
Dr. Giacomo Nobbio (IT)
Begonia L. · Begonia
M. KOPPE B.V
Dianthus L. · Carnation
Nicoletta Baratta (IT)
Rosa L. · Rose
ODENDAHL| Franz Josef Odendahl (Rosenhof Odendahl)
Dianthus L. · Carnation
SAPIA FLAVIO
Dianthus caryophyllus L. · Carnation
RICARDO BREA E HIJOS
Dianthus caryophyllus L. · Carnation
Blanc, Henri/Barberet, Alexandre
Gerbera jamesonii Bolus ex Hook. f. · Barberton daisy
FLORIST DE KWAKEL BV (NL)