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Variety traits

Drought tolerance

Drought tolerance of a variety is the ability of a plant to maintain productivity and crop quality under conditions of moisture deficit and dry air. This property is based on mechanisms of drought escape, water conservation, and physiological tissue endurance.

Mentioned in descriptions 12 470 varieties reference book.

Drought tolerance is expressed as the ability of a variety to maintain stable productivity during soil moisture shortages. The trait is manifested through biological drought escape in early-maturing forms, anatomical and morphological adaptations such as waxy bloom and leaf pubescence, as well as the physiological resistance of cellular systems to dehydration and high temperatures.

Tolerance assessment in the variety testing system is conducted by field comparison with a standard during adverse years, where the variety is rated in scores based on yield levels. Additionally, visual symptoms are taken into account, including leaf rolling, plant height, and the retention of green color (stay-green), as well as laboratory indicators of tissue water-holding capacity and proline accumulation.

The effectiveness of a variety depends on its plasticity and ability to pass through critical development phases, such as jointing or heading, without critical loss of productivity. Drought tolerance often correlates with overall adaptability to other stress factors; therefore, when selecting, it is important to consider the homeostatic nature of the variety and the results of trials in specific agro-climatic zones.

Sources10

Breakdown by crop

Drought tolerance of maize 133 Drought Tolerance of Grapevine 122 Drought tolerance of sunflower 75 Drought tolerance of potato 53 Drought resistance — common wheat 46 Drought Tolerance of Grapevine 43 Drought tolerance — tall fescue 43 Drought tolerance of maize 41 Drought tolerance of olive 33 Drought tolerance of roses 32 Drought tolerance — perennial ryegrass 27 Drought tolerance of barley 25 Drought resistance — durum wheat 21 Drought Tolerance — Red Fescue 21 Drought tolerance — Echinacea (hybrids) 21 Drought tolerance of alfalfa 20 Drought tolerance of common bean 16 Drought tolerance — Lavandula stoechas 16 Drought tolerance of Echinacea 16 Drought tolerance of Coreopsis 16 Drought tolerance — Echinacea purpurea 14 Drought tolerance of Sedum 13 Drought tolerance of pear 13 Drought Tolerance — Strawberry 13

Found in these crops

Maize 642 Sunflower 393 Bread wheat 302 Maize 227 Grapevine 212 Potato 148 Tall fescue 144 Barley 113 Rose 89 Common grape vine 87 Red fescue 82 Rapeseed 77

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.

Rosynka

Active

Triticum aestivum L. · Bread wheat

Vantsovs`kyi Anatolii Antonovych, Vozhehova Raisa Anatoliivna,

UA
3 records

Ronin

Active

Zea mays L. · Maize

Parii Myroslav Fedorovych, Parii IAroslav Fedorovych

UA
3 records

Rosanna

Active

Allium cepa L. var. cepa · Onion

ALLIUM SEEDS UK LTD

NL
3 records

Roc

Terminated

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

Domaine Public (FR)

FR
2 records

Rigalex

Active

Phaseolus vulgaris L. · Common bean

Vilmorin SA (FR)

FR
3 records

Rikiai

Protection expired

Beta vulgaris Garden Beet Group · Garden beet

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

LT
2 records

RGT Ggolf

Terminated

Sorghum bicolor (L.) Moench subsp. bicolor · Sorghum

RAGT 2n, FR

FR
2 records

Remolave

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

D.J.VAN DER HAVE

ES
2 records

Reliant ii

Terminated

Festuca trachyphylla (Hack.) Hack. · Hard fescue

Loft's Seed Inc. (US)

FR
2 records

Riki

Protection expired

Dracaena Vand. ex L. · Dracaena

Gebr. Janssen

NL
2 records

Redita

Terminated

Fragaria vesca L. · Wild strawberry

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

LT
2 records

Rambler

Active

Medicago sativa L. · Alfalfa

Agriculture Canada (CA)

FR
2 records

RAM 1023

Active

Zea mays L. · Maize

Rysin Leonid Mykhailovych

UA
3 records

PURPLEPAC

Active

Prunus amygdalus x Prunus persica

Agromillora Catalana S.A.U.

ES
2 records

Purple Calabash

Active

Solanum lycopersicum L. · Tomato

Domaine Public (FR)

FR
2 records

Quincy

Terminated

Phaseolus vulgaris L. · Common bean

Pop Vriend Research B.V.

NL
3 records

Rebel V

Active

Festuca arundinacea Schreb. · Tall fescue

NEXGEN TURF RESEARCH LLC

PL
2 records

Radmila

Active

Cucumis melo L. · Melon

Yuksel Tohumculuk LTD

UA
3 records

PR38A22

Protection expired

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

Pioneer Hi-Bred International Inc (US)

FR
2 records

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