Variety traits
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.
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.
Lolium perenne L. · Perennial ryegrass
Dr. Ulf Feuerstein / Michael J. McCarthy
Brassica oleracea L. (White Cabbage Group) · White cabbage
VAN DER PLOEG SJAAK
Fragaria L. · Strawberry
LEIS, Michelangelo, IT / MARTINELLI, Alessio, IT / CASTAGNOLI, Gianfranco, IT
Brassica napus var. napus · Rapeseed
KWS, D
Triticum aestivum L. · Bread wheat
Nikolay Tsenov, Ivanka Stoeva, Ivan Panayotov, Ivan Todorov, Kostadin Kostov, Tatyana Petrova, Iliya Iliev, Vanya Kiryakova
Hordeum vulgare L. · Barley
Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy
Robinia L. · Locust
P.J. Cunningham
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
Bejo Zaden BV, NL
Lolium multiflorum Lam. · Italian ryegrass
RAGT 2N S.A.S
Festuca rubra L. · Red fescue
DEUTSCHE SAATVEREDELUNG AG
Dactylis glomerata L. · Cocksfoot
INSTITUTO NACIONAL DE INVESTIGACION AGROPECUARIA (INIA)
Festuca arundinacea Schreb. · Tall fescue
PGG Wrightson Seeds
Festuca arundinacea Schreb. · Tall fescue
RAGT 2N S.A.S
Trifolium incarnatum L. · Crimson clover
ROBERTO GUARNIERI
Festuca arundinacea Schreb. · Tall fescue
PGG Wrightson Seeds South America
Bromus sitchensis Trin. · Alaska brome
AgResearch (NZ)
Lolium perenne L. · Perennial ryegrass
PURE SEED TESTING
Lolium perenne L. · Perennial ryegrass
Den Haan Zaden
Dactylis glomerata L. · Cocksfoot
RAGT SA (FR)
Festuca arundinacea Schreb. · Tall fescue
TURF SEED EUROPE LTD
Triticum aestivum L. · Bread wheat
Monsanto Agricultura España S.L.U.
Cynodon dactylon (L.) Pers. · Bermuda grass
SEMILLAS FITO' S.A.
x Triticosecale Wittm. ex A. Camus · Triticale
GABONAKUTATO NONPROFIT KOEZHASZNU KFT
Festuca arundinacea Schreb. · Tall fescue
SEMILLAS FITO' S.A.