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.
Poa pratensis L. · Kentucky bluegrass
Jonathan Green and Sons, Inc. and Cascade International Seed Company
Helianthus annuus L. · Sunflower
NUSEED SERBIA
Beta vulgaris Sugar Beet Group · Sugar beet
Syngenta Crop Protection AG, CH
Brassica oleracea L. (White Cabbage Group) · White cabbage
Hazera Seeds B.V.
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Poa pratensis L. · Kentucky bluegrass
PICKSEED WEST INC
Hordeum vulgare L. · Barley
Claus Einfeldt
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Helianthus annuus L. · Sunflower
SYNGENTA FRANCE S.A.S.
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
Sakata Korean Co. Ltd (KR)
Triticum aestivum L. · Bread wheat
NITA ZYGMUNT O. STANISLAW / PLUCIENNICZAK ELZBIETA, TERESA O JAN / PAKULSKA HANNA O. TADEUSZ / RYDZEWSKI JAN O. FRANCISZEK / BLASZCZAK WOJCIECH O. WLADYSLAW / BLASZCZAK MARIA O, MARIAN / JOACHIM KRZYSZTOF O. KRZYSZTOF
Petroselinum crispum (Mill.) Nyman ex A. W. Hill · Parsley
Jan Draaistra
Daucus carota L. · Carrot
Paul Degreef
Hordeum vulgare L. · Barley
Syngenta Crop Protection AG, CH
Hordeum vulgare L. · Barley
Syngenta Crop Protection AG, CH
Hordeum vulgare L. · Barley
Syngenta Crop Protection AG, CH
Helianthus annuus L. · Sunflower
SYNGENTA FRANCE S.A.S.
Zea mays L. · Maize
SYNGENTA FRANCE S.A.S.
Hordeum vulgare L. · Barley
Syngenta Participations AG| CH
Cucumis sativus L. · Cucumber
LUIS MULLOR
Capsicum annuum L. · Bell pepper
Pieterpik B.V.
Poa pratensis L. · Kentucky bluegrass
Agroscope Reckenholz
Lupinus angustifolius L. · Narrow-leaf lupin
Poznanska Hodowla Roslin Spolka z o.o.
Phaseolus vulgaris L. · Common bean
Pop Vriend, NL