Variety traits
Tolerance is the ability of a variety to maintain productivity and crop quality when exposed to pathogens or abiotic stresses. Unlike resistant varieties, tolerant plants are affected by infection but compensate for the damage without significant yield loss.
Mentioned in descriptions 20 866 varieties reference book.
Variety tolerance is the ability of a plant to withstand pathogen infection or the influence of abiotic factors, such as drought or salinity, without a significant decrease in productivity. In contrast to resistance, where the plant blocks the development of the pathogen, a tolerant variety becomes infected and bears signs of the disease, yet its physiological processes allow it to maintain a satisfactory yield level.
Tolerance assessment is conducted under disease pressure conditions by comparing the yield of varieties with the same degree of infection. When analyzing diseases, rating scales are used, where varieties with a high degree of infection but an insignificant drop in yield are classified as tolerant. Physiological indicators of resistance to abiotic stresses include data on germination, root system development, and the condition of the photosynthetic apparatus.
The complex trait of tolerance is expressed through the yield reduction coefficient: the lower the drop in productivity under strong factor impact, the higher the indicator. It is agronomically important that tolerant varieties act as latent carriers of pathogens, contributing to their accumulation in the field, which requires increased attention to phytosanitary monitoring even when plants appear healthy.
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
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Triticum aestivum L. · Bread wheat
APSOVSEMENTI S.P.A.
Avena sativa L. · Oat
SZB POLSKA SP.Z O O. SP.K.
Triticum aestivum L. · Bread wheat
APSOVSEMENTI SRL
Glycine max (L.) Merr. · Soybean
Rustica Prograin Genetique
Triticum aestivum L. · Bread wheat
VENTUROLI SEMENTI S.R.L.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Masami Yamamoto
Brassica oleracea L. (Broccoli Group) · Broccoli
TAKII JAPAN and CO. 180 UMEKOJI
Zea mays L. · Maize
LIMAGRAIN EUROPE
Zea mays L. subsp. mays (Maize Group) · Maize
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Beta vulgaris Sugar Beet Group · Sugar beet
Betaseed
Beta vulgaris Leaf Beet Group · Swiss chard
KWS VEGETABLES B.V.
Zea mays L. · Maize
MONSANTO TECHNOLOGY
Beta vulgaris Sugar Beet Group · Sugar beet
SAS Florimond Desprez Veuve et Fils (FR)
Zea mays L. · Maize
Syngenta participation AG
Cichorium intybus L. · Chicory
C. E. Zimmermann (US)
Zea mays L. · Maize
Zea mays L. · Maize
SPAETH HANS| Dr. Hans Rolf Spaeth
Brassica napus L. · Rapeseed
Lidea France SAS, Lescar FR
Lactuca sativa L. · Lettuce
Service Officiel de Controle (FR)
Zea mays L. · Maize
KWS| KWS SAAT AG
Allium cepa L. var. cepa · Onion
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Impatiens New Guinea Group · New Guinea Impatiens
KIENTZLER| Ludwig Kientzler