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.
Dactylis glomerata L. · Cocksfoot
Institute of Grassland & Environmental Research Welsh Plant Breeding Station
Protea cynaroides L. · King Protea
Peter Sijpkes, Ausflora Pacific Pty Ltd
Coreopsis verticillata L. · Whorled tickseed
van der Spek Bram
Magnolia grandiflora L. · Southern magnolia
Strickland Thomas Julian
Armeria pseudarmeria (Murray) Mansf.
Steve Eggleton, Howard Bentley, Plant Growers Australia
Betula nigra L. · Red birch
John Daniel Allen
Coreopsis L. · Tickseed
TERRA NOVA NURSERIES INC
Coreopsis rosea Nutt. · Pink coreopsis
Leonard Mark Alan
Diervilla rivularis Gatt.
Wood Timothy D
Vitex agnus-castus L. · Chaste tree
Wood Timothy D
Baptisia Vent. · Wild indigo
Hansen Hans A
Lavandula stoechas L. · French lavender
Plant Growers Australia Pty Ltd
Sambucus nigra L. · Elderberry
Peter Brand
Salvia L. · Sage
Petrus Hendricus Oudolf
Astelia chathamica x Astelia nervosa
Prebble Tim / Prebble Hamish
Lavandula stoechas L. · French lavender
Lammert Koning
Coprosma J.R. et G. Forst. · Mirror bush
WARE RICHARD
Geranium cinereum Cav. · Grey cranesbill
Lowe, Carl Marius
Coreopsis L. · Tickseed
Korlipara Harini|Canby, OR, US
Agapanthus praecox subsp orientalis (F.M. Leight) F.M. Leight. · Common agapanthus
Maxwell John|Brassall, AU / Craigie Gail Alexis|Brassell, AU
Coreopsis L. · Tickseed
Korlipara Harini
Loropetalum chinense (R. Br.) Oliv. · Chinese fringe flower
STEVEN EGGLETON
Geranium L. · Crane's Bill
NATURALLY NATIVE NEW ZEALAND PLANTS LTD
Pelargonium crispum (P. J. Bergius) L'Hér. · Crisped-leaf pelargonium
Martin Geibel c/o Elsner pac Jungpflanzen GbR