What question did this study set out to answer?

The aim is to define effective selection criteria for heat adaptation in rapeseed under terminal heat stress.

Genetic Variability, Heritability and Trait Associations of Morpho‐Physiological and Yield‐Related Traits in Rapeseed ( Brassica napus L.) Under Terminal Heat Stress: Implications for Heat‐Tolerant Breeding

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Field evaluations demonstrate heat adaptation traits in rapeseed, suggesting criteria for breeding heat-tolerant varieties.

The aim is to define effective selection criteria for heat adaptation in rapeseed under terminal heat stress.
Field evaluations conducted over two growing seasons
Characterization of physiological, morphological, and yield-related responses
Use of multivariate analyses to discriminate among genotypes
Assessment of heritability for key physiological indicators
Heat stress decreased yield performance due to disrupted photosynthesis and water relations
Canopy temperature and stomatal conductance showed high heritability as indicators of heat adaptation
Morphological traits like plant height and number of siliques correlated with seed yield
Genotypes Hyola 61 and Hyola 50 showed better adaptation, while Agamax and Hyola 401 were susceptible

Siahpoosh et al. (2026) studied this question.

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