Zalsalake
TerminatedAlstroemeria L. · Alstroemeria
van Zanten Plants b.v
Variety traits
Heat tolerance
Heat tolerance is a plant's genetic ability to maintain metabolic activity and productivity under high temperature conditions. It manifests as resistance to protein denaturation, turgor loss, and generative organ mortality.
Mentioned in descriptions 1 598 varieties reference book.
Heat tolerance is a genetically determined ability of plants to withstand high air and soil temperatures without significant damage to development and yield. When critical values, typically ranging from 35–40 °C, are exceeded, processes of protein denaturation and cell membrane degradation begin in plant tissues. Externally, this manifests as wilting, the appearance of heat scorch, flower/fruit abscission, and pollen mortality, leading to significant yield losses and sterility.
This trait is not static and changes during plant ontogeny: the seedling and flowering stages are considered the most vulnerable to overheating. Variety resistance is ensured by two key strategies: an overheating avoidance mechanism based on intensive transpiration via a well-developed root system, and physiological endurance. The latter includes the ability of cells to retain bound water, increased cytoplasm viscosity, and the active synthesis of specialized heat-shock proteins/enzymes.
Evaluation of variety heat tolerance is carried out using laboratory climate chambers or field express-methods, measuring the degree of tissue browning, chlorophyll fluorescence, or proline concentration in cells as a stress marker. Varieties with high heat tolerance are capable of consistent fruiting at temperatures of 35–40 °C and above, whereas low tolerance leads to functional inhibition as early as 30–35 °C. A temperature of 50 °C is considered the critical threshold for most agricultural crops, leading to cell death.
Breakdown by crop
Heat tolerance of tomato
14
Heat tolerance — Cauliflower
13
Heat tolerance of maize
10
Heat tolerance in pepper
8
Heat Tolerance — Soft Wheat
7
Heat tolerance of lettuce
7
Heat Tolerance — Tall Fescue
5
Heat Tolerance — Broccoli
5
Heat tolerance of Calibrachoa
4
Heat tolerance of common bean
4
Heat tolerance of garden strawberry
4
Heat Tolerance in White Cabbage
4
Heat tolerance of cucumber
4
Heat tolerance of sunflower
3
Found in these crops
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.
WOW312
ActiveDelosperma nubigenum (Schltr.) L. Bolus · Hardy yellow ice plant
Koichiro Nishikawa
Weslowhite
ActiveLobelia erinus L. · Edging lobelia
Westhoff Heinrich|Sudlohn, DE
WALHIFLAR
ActiveHybrids between Hibiscus paramutabilis and Hibiscus syriacus
Walberton Plants LTD
Zalsatensa
ActiveAlstroemeria L. · Alstroemeria
Van Zanten Breeding B.V.
WALHIECLI
ActiveHybrids between Hibiscus paramutabilis and Hibiscus syriacus
Walberton Plants LTD
VOLTHU 1007
ActiveThunbergia alata Bojer ex Sims · Black-eyed Susan vine
Volmary Ltd
Weseusopi
ActiveEuphorbia hypericifolia L. · Graceful sandmat
Unger Christian
SVAZ0011
Application submittedScaevola aemula R. Br. · Fairy fan-flower
Syngenta Crop Protection AG
TOSTB0047
ActivePelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Floha V.O.F
Toffee Chip
ActiveAjuga reptans L. · Bugle
O'Byrne Marietta|Eugene, OR 97402, US
Summer Snowdrift
Activehybrids between Iberis gibraltarica L. and Iberis sempervirens L.
SCOTT C TREES
SVAZ0009
Application submittedScaevola aemula R. Br. · Fairy fan-flower
Syngenta Crop Protection AG
TOSTD0188
ActivePelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Monte-Michielsen Fabienne
Teshiho
ActiveAlstroemeria L. · Alstroemeria
Horti Partners V.O.F.
Sun Devil
ActiveGaillardia x grandiflora hort. ex Van Houtte · Blanket flower
Korlipara Harini
Sunbelrichipi
ActiveCalibrachoa Cerv. · Calibrachoa
Yasuyuki Murakami
STE10
ActiveLimonium gmelinii (Willd.) Kuntze
van Steijn Petrus Theodorus
Tesromance
ActiveAlstroemeria L. · Alstroemeria
Horti Partners V.O.F.
Summer Sky
ActiveAgastache Clayt. ex Gronov. · Giant hyssop
Janet N. Egger
SAKIMP006S
ActiveImpatiens L. · Balsam
Sakata Seed Corporation (SCC)
Strawberry Sundae
TerminatedDiascia Link & Otto · Twinspur
Graham N. Brown
Southern Border
ActiveCuphea hyssopifolia Kunth · False heather
Southern Advanced Plants Pty Ltd
SAKGOM006
ActiveGomphrena globosa L. · Globe amaranth
Shogo Otomo