The physiological capacity of a soft wheat variety to maintain vitality and productivity under stress temperature conditions during the growing season.
In the reference
7
varieties
crop Bread wheat,
where this is mentioned in the description.
Evaluation of heat tolerance in soft wheat is based on the field CTD (Canopy Temperature Depression) index and the laboratory turgor meter method. For highly heat-tolerant varieties, the difference between leaf blade thickness in the morning and after midday exposure is no more than 26–52 µm, whereas in non-adapted varieties, this range reaches 40–75 µm.
This trait has a direct impact on yield structure components, particularly on the 1000-grain weight and gluten accumulation during grain filling. Adaptive wheat varieties, possessing high homeostacity, are able to maintain a drought tolerance index at a level of 80% or more under severe drought conditions.
General information about the subject — on the page
Heat tolerance.
Varieties of Bread wheat mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.