Regina CL
ActiveHelianthus annuus L. · Sunflower
Rotaru Igor Tudor, Rotaru Vitalie Tudor, Rotaru Tudor Grigore,
Variety traits
Herbicide tolerance is the genetically determined ability of a crop variety to withstand the phytotoxic effects of chemical agents, allowing for the application of herbicides to growing crops without suppressing the crop.
Mentioned in descriptions 5 668 varieties reference book.
The herbicide tolerance of a variety is the genetically determined ability of a cultivated plant to withstand the phytotoxic effects of a specific chemical agent. In practice, this allows for the application of broad-spectrum herbicides directly to the growing crop without the risk of damage or loss of the stand, which significantly simplifies weed control.
This trait is evaluated within the framework of state variety testing using field and laboratory test methods. In field conditions, plots subjected to chemical treatment are compared with control samples, where plant density preservation, the absence of phytotoxicity signs (chlorosis, necrosis), and growth rates are recorded. Laboratory methods include dose-response analysis to determine survival rates at various application rates of the chemical.
Tolerance indicators are expressed in visual damage scores, percentage of stand density preservation, or productivity levels relative to an untreated standard. High tolerance is characterized by the preservation of full productivity when the recommended full dose of herbicide is applied. With low tolerance, even reduced doses cause growth retardation and yield loss; therefore, an important parameter for variety selection is its compatibility with the specific mode of action of the applied chemical.
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.
Helianthus annuus L. · Sunflower
Rotaru Igor Tudor, Rotaru Vitalie Tudor, Rotaru Tudor Grigore,
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Glycine max (L.) Merr. · Soybean
Aksenia Aleksieva, Minka Filipova
Helianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
Triticum aestivum L. · Bread wheat
KWS MOMONT RECHERCHE SARL, FR
Triticum aestivum L. · Bread wheat
KWS Momont Recherche Sarl
Brassica napus var. napus · Rapeseed
KOIPESOL SEMILLAS, S.A.
Cicer arietinum L. · Chickpea
Mehmet Fatih Olgun
Triticum aestivum L. · Bread wheat
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Agri-Obtentions S.A.
Triticum aestivum L. · Bread wheat
LEMAIRE DEFFONTAINES S.A.S.
Triticum aestivum L. · Bread wheat
APSOVSEMENTI S.P.A.
Triticum aestivum L. · Bread wheat
APSOVSEMENTI SRL
Triticum aestivum L. · Bread wheat
APSOVSEMENTI S.P.A.
Triticum aestivum L. · Bread wheat
VENTUROLI SEMENTI S.R.L.
Beta vulgaris Sugar Beet Group · Sugar beet
Ann-Katrin Muennekhoff, Dietrich Hauer
Zea mays L. · Maize
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
MAS SEEDS
Zea mays L. subsp. mays (Maize Group) · Maize
KWS SAAT SE & CO.KGAA
Beta vulgaris Sugar Beet Group · Sugar beet
SAS Florimond Desprez Veuve et Fils (FR)
Cichorium intybus L. · Chicory
Institut National de la Recherche Agronomique (FR)/Centre Technique Interprofessionnel des Fruits & Legumes (FR)
Brassica napus L. · Rapeseed
MONSANTO TECHNOLOGY
Beta vulgaris L. · Beet
SESVanderhave NV
Solanum tuberosum L. · Potato
BV VERENIGDE KWWEK
Zea mays L. · Maize
RAGT 2N S.A.S