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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.

Zalsamyko

Active

Alstroemeria L. · Alstroemeria

Van Zanten Breeding B.V.

1 record

TNPHYCDR

Active

Phygelius x rectus Coombs

Janet N. Egger

1 record

WEI 5276

Application submitted

Prunus domestica L. · European plum

Michael Neumüller

1 record

Sweet Paco

Terminated

Spathiphyllum Schott · Spathiphyllum

P.C.M. Olsthoorn Holding B.V.

1 record

Suntapiro

Terminated

Verbena L. · Vervain

Yasunori Yomo

1 record

Sunsation

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Flevo Plant Holding B.V.

1 record

SUNRWB135

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

1 record

T 07 L6

Active

Rubus idaeus L. · Red raspberry

Aldo Telch

2 records

Solstys

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

STARBURST

Terminated

Berberis L. · Barberry

Susan M. Yandall^^^Stephen J. Yandall

1 record

Sirio

Terminated

Populus L. · Poplar

Franco Alasia

1 record

Stenopro

Application submitted

Stenotaphrum secundatum (Walter) Kuntze · St. Augustine grass

North Carolina State University (NCSU)

1 record

Sunsurfviopiko

Terminated

Petunia Juss. · Petunia

Kazunari Iwaki^^^Shunsuke Takeuchi^^^Takeshi Kanaya^^^Yukihiro Ikeda

1 record

Soft Caress

Active

Mahonia nitens C. K. Schneid.

IT Saul Plants LLC

1 record

Star of Summer

Withdrawn

Astrantia major L. · Masterwort

Jacobus R. de Jong

1 record

Selenor

Active

Vitis vinifera L. · Common grape vine

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

1 record

Sele

Active

Diplotaxis tenuifolia (L.) DC. · Perennial wall-rocket

MARALDI SEMENTI S.r.l.

1 record

SPICWIRL

Withdrawn

Chamaecyparis lawsoniana (A. Murray bis) Parl. · Lawson's cypress

Carole Spicer^^^Derek Spicer

1 record

SMNHRL

Active

Hydrangea arborescens L. · Smooth hydrangea

TIMOTHY D WOOD

1 record

Seascape

Application submitted

Paspalum vaginatum Sw. · Seashore paspalum

University of Georgia Research Foundation

1 record

Sikitita Dos

Active

Olea europaea L. · Olive

Universidad de Córdoba^^^Instituto Andaluz de Investigación y Formación Agraria Pesquera y Alimentaria (IFAPA)^^^Luis Rallo Romero^^^Diego Barranco Navero^^^Raúl de la Rosa Navarro^^^Lorenzo León Moreno^^^Concepción Muñoz Díez^^^Diego Cabello Pozo

1 record

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