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 rubra L. · Red fescue
BARENBRUG HOLLAND
Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Pres · False oat-grass
SAATZUCHT STEINACH GMBH and CO KG
Helianthus annuus L. · Sunflower
RUSTICA (FR)
Hordeum vulgare L. · Barley
NORDSAAT Saatzucht GmbH Frau Dr. Lissy Kuntze
Solanum tuberosum L. · Potato
Teagasc
Helianthus annuus L. · Sunflower
Saaten Union Romania, RO
Helianthus annuus L. · Sunflower
Rene Baratin
Festuca ovina L. · Sheep's fescue
DLF Seeds A/S
Helianthus annuus L. · Sunflower
Patrick Duhigg
Lolium perenne L. · Perennial ryegrass
DLF-TRIFOLIUM DANSK PLANTEFORAEDLING
Solanum tuberosum L. · Potato
Teagasc Crops Research Centre
Lupinus angustifolius L. · Narrow-leaf lupin
Poznanska Hodowla Roslin Sp. z o.o
Helianthus annuus L. · Sunflower
Nikolae Parvu
Triticum durum Desf. · Durum wheat
Saatzucht Donau GmbH & Co.KG
Malus domestica (Suckow) Borkh. · Apple
Helianthus annuus L. · Sunflower
SOLTIS S.A.S
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Lolium perenne L. · Perennial ryegrass
Rutgers, the State University of New Jersey and Novel AG, Inc.
Festuca arundinacea Schreb. · Tall fescue
DLF Trifolium A-S, DK
Rosa L. · Rose
WERNER NOACK
Festuca arundinacea Schreb. · Tall fescue
UNIVERSITY OF GENT
Beta vulgaris Garden Beet Group · Garden beet
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Poa pratensis L. · Kentucky bluegrass
Schumann Cord, Busch Heinrich,
Festuca rubra L. · Red fescue
W W JOHNSON and SON LTD