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.

PH-BC -1-74

Active

Helianthus annuus L. · Sunflower

4 records

Panteon

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

4 records

Pedja

Active

Phalaris arundinacea L. · Reed canary grass

Herbert Korjus 70%, Aleksander Adojaan 30%

3 records

Pearlgem

Active

Cucumis melo L. · Melon

Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

3 records

Palma

Active

Allium cepa L. var. cepa · Onion

MERIDIEM SEEDS S.L.

2 records

P1690

Terminated

Zea mays L. · Maize

PIONEER HI-BRED INT

2 records

Panisse

Active

Lactuca sativa L. · Lettuce

Graines Gautier SA (FR)

3 records

Pane 247

Active

Triticum aestivum L. · Bread wheat

J.PANE

3 records

Pagane

Active

Prunus domestica L. · European plum

Valentina Bozhkova, Pencho Iliev

2 records

Perlinio

Terminated

Solanum lycopersicum L. · Tomato

Gautier Semences SAS (FR)

3 records

P9578

Active

Zea mays L. subsp. mays (Maize Group) · Maize

Pioneer Hi-Bred Int., INC. (USA)

2 records

P0710

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER OVERSEAS CORPORATION

2 records

P9074

Active

Zea mays L. subsp. mays (Maize Group) · Maize

Pioneer Overseas Corporation US (USA)

2 records

P2105Y

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER HI-BRED INTERNATIONAL

2 records

P 16

Active

Malus Mill. · Apple

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

3 records

P1309W

Active

Zea mays L. · Maize

PIONEER HI-BRED INT

2 records

P18012

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

2 records

P0105

Active

Zea mays L. subsp. mays (Maize Group) · Maize

Pioneer Overseas Corporation US (USA)

2 records

Ozyrys

Active

Cucumis sativus L. · Cucumber

Instytut Ogrodnictwa - Państwowy Instytut Badawczy \Przedsiębiorstwo Nasiennictwa Ogrodniczego i Szkółkarstwa w Ożarowie Mazowieckim Spółka z o.o.

3 records

P1574

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER HI-BRED INTERNATIONAL

2 records

P1028

Active

Zea mays L. subsp. mays (Maize Group) · Maize

Pioneer Overseas Corporation US (USA)

2 records

P0710y

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER OVERSEAS CORPORATION

2 records

P0217

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER HI-BRED INT.INC/PIONEER OVERSEAS CORP.

2 records

P8834WX

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

2 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.