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Variety traits

Herbicide tolerance

Herbicide tolerance is the genetically determined ability of a crop variety to withstand the phytotoxic effects of chemical agents, allowing for the application of herbicides to growing crops without suppressing the crop.

Mentioned in descriptions 5 668 varieties reference book.

The herbicide tolerance of a variety is the genetically determined ability of a cultivated plant to withstand the phytotoxic effects of a specific chemical agent. In practice, this allows for the application of broad-spectrum herbicides directly to the growing crop without the risk of damage or loss of the stand, which significantly simplifies weed control.

This trait is evaluated within the framework of state variety testing using field and laboratory test methods. In field conditions, plots subjected to chemical treatment are compared with control samples, where plant density preservation, the absence of phytotoxicity signs (chlorosis, necrosis), and growth rates are recorded. Laboratory methods include dose-response analysis to determine survival rates at various application rates of the chemical.

Tolerance indicators are expressed in visual damage scores, percentage of stand density preservation, or productivity levels relative to an untreated standard. High tolerance is characterized by the preservation of full productivity when the recommended full dose of herbicide is applied. With low tolerance, even reduced doses cause growth retardation and yield loss; therefore, an important parameter for variety selection is its compatibility with the specific mode of action of the applied chemical.

Sources10

Breakdown by crop

Sunflower herbicide resistance 726 Herbicide resistance — sugar beet 192 Maize herbicide resistance 148 Herbicide resistance in rapeseed 113 Herbicide Resistance in Rapeseed 97 Herbicide Resistance in Rice 93 Herbicide tolerance in potato 89 Herbicide resistance in soft wheat 88 Maize herbicide resistance 50 Herbicide resistance in soybean 50 Herbicide Tolerance — Sweet Corn 17 Herbicide tolerance in barley 15 Cotton Herbicide Resistance 15 Herbicide tolerance in pea 12 Herbicide Resistance in Perennial Ryegrass 12 Herbicide Tolerance in Common Bean 11 Herbicide resistance of chicory 9 Herbicide resistance — durum wheat 8 Herbicide resistance in red fescue 8 Herbicide resistance — Sheep's fescue 7 Herbicide Resistance in Sorghum 7 Herbicide resistance in tomato 5 Herbicide resistance in hard fescue 5 Chickpea herbicide tolerance 5

Found in these crops

Sunflower 725 Sugar beet 195 Maize 147 Rapeseed 111 Rapeseed 96 Rice 91 Potato 89 Bread wheat 89 Maize 49 Soybean 47 Sweet corn 17 Upland cotton 15

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.

Alessio CL

Active

Oryza sativa L. · Rice

Eugenio Gentinetta (IT)

BG
2 records

Aheloj 2

Active

Hordeum vulgare L. · Barley

S. Zapryanov, T. Stefanov, Y. Burlezova, S. Navushtanov, V. Mincheva

BG
3 records

7Pdvn12r

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

UA
2 records

7Plfc16r

Active

Helianthus annuus L. · Sunflower

Benoit Revol

UA
3 records

Alexxandra

Active

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

R 2n (FR)

FR
2 records

7Pejy56b

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

UA
2 records

Ackra

Terminated

Solanum tuberosum L. · Potato

Niehoff, Dr. Karl-Heinrich Gut Bütow

AT
3 records

Voodoo

Terminated

Brassica napus var. napus · Rapeseed

Laima Kott

2 records

T1263lm

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

2 records

T1280suhm

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

2 records

Serenity

Terminated

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

University of Guelph, Dept. of Plant Agriculture

4 records

R265

Application submitted

Zea mays L. · Maize

CROOKHAM COMPANY

2 records

Ph5060r

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

2 records

Ph1004b

Active

Helianthus annuus L. · Sunflower

PIONEER HI-BRED INTERNATIONAL

2 records

Pinnacle

Active

Pastinaca sativa L. · Parsnip

Elsoms Seeds

2 records

On1701b

Active

Helianthus annuus L. · Sunflower

Agrigenetics Inc. D/B/A Mycogen Seeds

2 records

N0626lg

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

3 records

Ithaca Great Lakes

Terminated

Lactuca sativa L. · Lettuce

Asgrow Int. Corp. subsidiary of, Michigan 49001

2 records

B0632hg

Active

Helianthus annuus L. · Sunflower

PIONEER HI-BRED INTERNATIONAL

2 records

7Pwvz88b

Active

Helianthus annuus L. · Sunflower

PIONEER HI-BRED INTERNATIONAL

2 records

B0392lg

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

2 records

B0641hm

Active

Helianthus annuus L. · Sunflower

PIONEER HI-BRED INTERNATIONAL

2 records

B0529lg

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

2 records

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