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.
Triticum aestivum L. · Bread wheat
Pauk Janos / Papp Maria / Beke Bela / Lantos Csaba / Cseuz Laszlo / Ovari Judit / Pugris Tamas
Tulipa L. · Tulip
H.B.E. BLOEMBOLLEN VOF
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
UTECHT| Angelika Utecht in Fa. Syngenta Seeds GmbH -Niederlassung-
Solanum lycopersicum L. · Tomato
Bayer Holland B.V.
Pelargonium peltatum (L.) L'Hér. · Ivy-leaf geranium
Hanes Mitchell Eugene
Rosa L. · Rose
Fryers Nurseries Ltd
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Ebihara H.
Prunus dulcis (Mill.) D. A. Webb · Almond
JOHN A. FRITZ
Pelargonium peltatum (L.) L'Hér. · Ivy-leaf geranium
Hanes, Mitchell E.|Morgan Hill, CA
Glycine max (L.) Merr. · Soybean
INSTITUTE OF FIELD AND VEGETABLE CROPS
Tulipa L. · Tulip
Vertuco B.V.
Tulipa L. · Tulip
V.O.F. HYBRIS
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
UTECHT| Angelika Utecht in Fa. Syngenta Seeds GmbH -Niederlassung-
Pelargonium L'Hér. ex Ait. · Geranium
GOLDSMITH SEEDS
Avena sativa L. · Oat
Pflanzenzucht Oberlimpurg
Hippeastrum Herb. · Amaryllis
Hadeco (Pty) Ltd.
Lolium perenne L. · Perennial ryegrass
Lietuvos agrarinių ir miškų mokslų centras
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Mitchell Hanes
Rosa L. · Rose
Dickson Nurseries Ltd
Rosa L. · Rose
WISBECH PLANT CO LTD
x Triticosecale Wittm. ex A. Camus · Triticale
Kruppa Jozsef / Hoffmann Borbala / Kruppa Klaudia / Kruppa Krisztina / Kruppa Jozsef
Tulipa L. · Tulip
Savro B.V.
Bouvardia Salisb. · Bouvardia
Bouvardiakwekerij de Jong V.O.F.
Hippeastrum Herb. · Amaryllis
Willem M.W. van Velden