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.

Tirole

Active

Lactuca sativa L. · Lettuce

Syngenta Seeds B.V.

9 records

Titan RX

Active

Festuca arundinacea Schreb. · Tall fescue

SEED RESEARCH OF OREGON

4 records

Tifany

Active

Prunus persica (L.) Batsch · Peach

PSB produccion vegetal S.L. (ES)

7 records

Tiger

Active

Agrostis capillaris L. · Common bent

CEBECO INTERNATIONAL SEEDS

5 records

Thunder Dome

Active

Brassica oleracea L. (Broccoli Group) · Broccoli

TAKII JAPAN and CO. 180 UMEKOJI

6 records

Teetop

Active

Agrostis capillaris L. · Common bent

DLF SEEDS A/S

6 records

Tito Flavio

Active

Triticum durum Desf. · Durum wheat

Syngenta Participations AG, S.I.S. Società Italiana Sementi S.p.A.

5 records

Tigershark

Active

Agrostis stolonifera L. · Creeping bentgrass

Novel AG

4 records

Telemaco

Active

Triticum durum Desf. · Durum wheat

ISEA S.R.L

5 records

Tasty King

Active

Cucumis sativus L. · Cucumber

TOKITA SEED CO LTD

4 records

Tasida

Active

Festuca rubra L. · Red fescue

DEUTSCHE SAATVEREDELUNG AG

6 records

Tetragame

Active

Lolium perenne L. · Perennial ryegrass

DLF Trifolium A-S, DK

6 records

Tappiana

Active

Lolium perenne L. · Perennial ryegrass

DLF Trifolium A-S, DK

5 records

Tennis

Active

Lupinus albus L. · White lupin

ISEA S.r.l.^^^Catia Stamigna^^^Domenico Chiaretti

5 records

SV3212GP

Active

Phaseolus vulgaris L. · Common bean

Monsanto Vegetable IP Management B.V.

5 records

SU Mousqueton

Active

Triticum aestivum L. · Bread wheat

Asur Plant Breeding, F

5 records

SV6881LG

Active

Lactuca sativa L. · Lettuce

Seminis Vegetable Seeds

5 records

Sugar Star

Terminated

Pisum sativum L. · Pea

ROGERS SEED CO

6 records

SU Vergil

Active

Secale cereale L. · Rye

P.H PETERSEN

6 records

Sr 4750

Active

Lolium perenne L. · Perennial ryegrass

DLF Seeds A/S

4 records

Sr 8700

Active

Festuca arundinacea Schreb. · Tall fescue

DLF Seeds A/S

4 records

Sugar Pearl

Terminated

Pisum sativum L. · Pea

ROGERS SEED CO

6 records

Summer 3373

Active

Actinidia Lindl. · Actinidia

Vincenzo Ossani

4 records

Spartacus

Active

Asparagus officinalis L. · Asparagus

Theuws Johannes Henricus Adrianus / Arends Lambert Willem Johannes

8 records

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.