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.
Rosa L. · Rose
W. KORDES'SOHNE ROSENSCHULEN GMBH & CO KG
Rosa L. · Rose
Wilhelm Kordes / Tim-Hermann Kordes / Margarita Kordes in Fa. W. Kordes' Söhne Rosenschulen GmbH & Co KG
Dianthus caryophyllus L. · Carnation
Siegfried Klemm
Rosa L. · Rose
Wilhelm Kordes (DE)
Pelargonium L'Hér. ex Ait. · Geranium
GUILLOU FRERES (FR)
Dianthus caryophyllus L. · Carnation
SRES JAAP Y COR GROOT
Hordeum vulgare L. · Barley
VASILESCU LILIANAMIHAILESCU ALEXANDRINABUDE ALEXANDRU
Gerbera L. · Gerbera
Meynet, J.
Festuca ovina L. · Sheep's fescue
Peak Plant Genetics
Lupinus angustifolius L. · Narrow-leaf lupin
I.G. SAATZUCHT VERWALTUNG| I.G. Saatzucht Verwaltungs GmbH
Cucumis sativus L. · Cucumber
DE RUITER SEEDS
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
UTECHT| Angelika Utecht in Fa. Syngenta Seeds GmbH -Niederlassung-
Pelargonium L'Hér. ex Ait. · Geranium
MRS.I SCHUMANN
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
SCHUMANN| Ingeborg Schumann Lehr- und Versuchsanstalt fuer Gartenbau
Zea mays L. · Maize
Ragt, F
Triticum aestivum L. · Bread wheat
Selgen, a.s. Vyzkumne centrum SELTON, s.r.o.
Dianthus L. · Carnation
Nobbio, Giacomo|Strada Villetta 5, San Remo, Imperia, Italy
Lilium L. · Lily
Vletter & Den Haan Beheer B.V
Begonia L. · Begonia
Man, Jan|Lisse, Netherlands
Dianthus L. · Carnation
Nobbio, Giacomo|Strada Villetta 5, San Remo, Imperia, Italy
Prunus avium (L.) L. · Sweet cherry
Paul Argot (FR)
Solanum melongena L. · Eggplant
Seminis Vegetable Seeds
Dianthus L. · Carnation
SAPIA FLAVIO
Begonia x hiemalis Fotsch · Elatior Begonia
M. KOPPE BV (NL)