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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.

Ramboblitz

Withdrawn

Anigozanthos flavidus DC. · Tall kangaroo paw

Ramm Botanicals Holdings Pty Ltd

1 record

SAKZIN007

Terminated

Zinnia x marylandica D. M. Spooner et al.

Sakata Seed Corporation (SCC)

1 record

Resilia

Application submitted

Vitis vinifera L. · Common grape vine

Vivai Cooperativi di Rauscedo (VCR)

1 record

SAGZ0001

Terminated

Salvia x superba Stapf · perennial sage

Syngenta Crop Protection AG

1 record

Red Delight

Active

Allium cepa L. var. cepa · Onion

The Sweet Onion company Ltd.

1 record

Shirley

Terminated

Kalanchoe Adans. · Kalanchoe

Knud Jepsen

1 record

Rap Horose

Terminated

Verbena L. · Vervain

GOLDSMITH SEEDS

1 record

RO.KI.1

Application submitted

Actinidia Lindl. · Actinidia

Ferdinando Cossio^^^Lorenzo Tacconi

2 records

PPPHL0617

Terminated

Phlox x procumbens Lehm.

Ushio Sakazaki

1 record

Puntacana

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

2 records

Rant 02

Application submitted

Symphoricarpos x chenaultii Rehder · Chenault coralberry

Ronny Antonissen

1 record

Red Hot Vanilla

Terminated

Coreopsis verticillata L. · Whorled tickseed

Hans A. Hansen

1 record

Raspberry Tart

Withdrawn

Echinacea Moench. · Coneflower

HARINI KORLIPARA

2 records

Raelynn

Withdrawn

Kalanchoe Adans. · Kalanchoe

Knud Jepsen A/S

1 record

Prosaba

Active

Rosa L. · Rose

Plant Research Overberg (PRO) B.V.

1 record

Pink Chablis

Terminated

Penstemon Schmidel. · Beard Tongue

TERRA NOVA NURSERIES INC

1 record

MVNC1904

Application submitted

Coreopsis L. · Tickseed

Marco van Noort Breeding B.V.

1 record

Phaedra

Application submitted

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Theofanis Papanikolopoulos^^^Evangelos Tsormpatsidis^^^Eleni Vysini

2 records

MINSYGRABL1

Active

Hibiscus syriacus L. · Rose of Sharon

Hortival Diffusion S.A.S.

1 record

Nobella

Application submitted

Humulus lupulus L. · Common hop

Simon H. Steiner Hopfen GmbH

1 record

Mirared

Withdrawn

Prunus cerasifera Ehrh. x P. persica (L.) Batsch · Myrobalan x Peach

Nova S.r.l.

2 records

MINSYGROU02

Application submitted

Hibiscus syriacus L. · Rose of Sharon

Hortival Diffusion S.A.S.

1 record

Minpast

Terminated

Hibiscus syriacus L. · Rose of Sharon

Hortival Diffusion S.A.S.

1 record

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