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.
Festuca ovina L. · Sheep's fescue
Mommersteeg International BV (NL)
Koeleria macrantha (Ledeb.) Schult. · June grass
Barenbrug Holland BV (NL)
Festuca rubra L. · Red fescue
Barenbrug Holland BV (NL)
Festuca arundinacea Schreb. · Tall fescue
NIELS ROULUND
Beta vulgaris Sugar Beet Group · Sugar beet
SAS FLORIMOND-DESPREZ Veuve et Fils
Beta vulgaris Garden Beet Group · Garden beet
Sortsemovošč
Brassica napus var. napus · Rapeseed
Thierry Ronsin
Festuca rubra L. · Red fescue
STELLING DIETER
Trifolium repens L. · White clover
DLF TRIFOLIUM A/S, Dansk Planteforedling (DK)
Solanum tuberosum L. · Potato
Heinrich Böhm
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Nils Klemm
Helianthus annuus L. · Sunflower
Euralis Semences
Festuca arundinacea Schreb. · Tall fescue
TASMANIAN DEP.AGRICULTURE
Festuca arundinacea Schreb. · Tall fescue
Lebanon Seaboard Corporation (US)
Trifolium pratense L. · Red clover
Forschungsanstalt Agroscope Reckenholz-Tänikon ART
Hordeum vulgare L. · Barley
Carlsberg, DK
Solanum tuberosum L. · Potato
Wolfgang Walter
Trifolium repens L. · White clover
GRASSLANDS RESEARCH CENTRE
Festuca arundinacea Schreb. · Tall fescue
STELLING DIETER
Festuca rubra L. · Red fescue
Euro Grass Breeding GmbH Co. KG
Poa pratensis L. · Kentucky bluegrass
Rutgers, the State University of New Jersey and Novel AG, Inc.
Hordeum vulgare L. · Barley
Nickerson International Research S.N.C.
Zea mays L. · Maize
PETER KONCZOL
Brassica napus var. napus · Rapeseed
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG