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.
Brassica napus var. napus · Rapeseed
Hodowla Roslin Smolice Sp.z o.o Grupa IHAR
Begonia L. · Begonia
L.H.KOPPE
Begonia L. · Begonia
L.H.KOPPE
Begonia x hiemalis Fotsch · Elatior Begonia
LUBBERTUS H.KOPPE
Rosa L. · Rose
David C H Austin (GB)/Patricia J Austin (GB)
Rosa L. · Rose
David C H Austin (GB)/Patricia J Austin (GB)
Impatiens walleriana Hook. f. · Busy Lizzie
MICHAEL S.UCHNEAT
Gerbera L. · Gerbera
FLORIST HOLLAND B.V.
Rhododendron simsii Planch. · Indica azalea
Marilies u Hanno Baetche von Gartnerei
Rosa L. · Rose
HANS JURGEN EVERS (T)
Chrysanthemum x morifolium Ramat. · Florist's daisy
JAN HOEK
Gerbera L. · Gerbera
SCHNACK| Klaus und Volker Schnack
Dianthus L. · Carnation
Sapia, C.
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds B.V.
Triticum durum Desf. · Durum wheat
Eurodur S.A.
Tulipa L. · Tulip
Testcentrum voor Siergewassen B.V.
Rosa L. · Rose
Michel Adam (FR)
Rosa L. · Rose
Michel Adam (FR)
Prunus dulcis (Mill.) D. A. Webb · Almond
Federico Dicenta López-Higuera/José Egea Caballero/Teresa Cremades Rosado/Jesús López Alcolea/Pedro Martínez Gómez/ Manuel Rubio Angulo/ Raquel Sánchez Pérez/Pedro José Martínez García
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
van Kleinwee Theodorus Cornelis Maria|Hoorn, NL
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Syngenta Seeds B.V.
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Syngenta Seeds B.V.
Rosa L. · Rose
Zlesak, David
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
van Kleinwee Theodorus Cornelis Maria|Hoorn, NL