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Variety traits

Tolerance

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.

Sources10

Breakdown by crop

Maize tolerance 721 Sunflower tolerance 633 Maize tolerance 361 Tolerance — Sugar Beet 354 Tolerance — soft wheat 336 Tolerance in Lettuce 236 Tomato Tolerance 234 Cucumber tolerance 204 Rapeseed tolerance 168 Tolerance in White Cabbage 140 Pepper Tolerance 122 Barley tolerance 119 Tolerance — Soybean 117 Bean tolerance 81 Rapeseed tolerance 74 Potato tolerance 71 Rose tolerance 64 Zucchini Tolerance 61 Melon tolerance 61 Plum tolerance 58 Grapevine Tolerance 56 Peach tolerance 55 Pea tolerance 55 Triticale Tolerance 54

Found in these crops

Maize 718 Sunflower 670 Sugar beet 368 Bread wheat 342 Tomato 336 Maize 322 Cucumber 309 Lettuce 301 Rapeseed 190 Bell pepper 189 White cabbage 180 Perennial ryegrass 139

Varieties that feature this in their description

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.

Ilva

Active

Prunus cerasus L. · Sour cherry

RO
1 record

Florina 44

Active

Solanum lycopersicum L. · Tomato

RO
1 record

Fruzsi

Active

Rosa L. · Rose

HU
1 record

Joudi

Terminated

Brassica oleracea L. (White Cabbage Group) · White cabbage

NL
1 record

Kibria F1

Active

Cucumis sativus L. · Cucumber

UA
2 records

Hermion

Active

Triticum aestivum L. · Bread wheat

DE
1 record

Kele

Active

Rosa L. · Rose

HU
1 record

Grandiflora

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Information regarding the breeder received in the contribution to CPVO :Siebold

FR
1 record

EW4251

Active

Zea mays L. · Maize

UA
2 records

Gold Ellen

Application submitted

Escallonia Mutis ex L. f. · Escallonia

NL
1 record

Julian F1

Active

Cucumis sativus L. · Cucumber

UA
1 record

Grot F1

Terminated

Cucumis sativus L. · Cucumber

UA
1 record

JAUSMA

Terminated

Prunus armeniaca L. · Apricot

LV
1 record

Jambo

Active

Cucurbita pepo L. · Field pumpkin

NL
1 record

Edinburginė

Protection expired

Prunus domestica L. · European plum

LT
1 record

Glowing Embers

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Brugger

FR
1 record

Eliska

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

CZ
1 record

Hanabi

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Yamamoto Takeomi

FR
1 record

Hamanova

Terminated

Prunus domestica L. · European plum

SK
1 record

Horus

Active

Solanum lycopersicum L. · Tomato

IT
1 record

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