biostudies-literatureUnknown12Valentini NAn increasing interest in the cultivation of (European) hazelnut (<i>Corylus avellana</i>) is driving a demand to breed cultivars adapted to non-conventional environments, particularly in the context of incipient climate change. Given that plant phenology is so strongly determined by genotype, a rational approach to support these breeding efforts will be to identify quantitative trait loci (QTLs) and the genes underlying the basis for adaptation. The present study was designed to map QTLs for phenology-related traits, such as the timing of both male and female flowering, dichogamy, and the period required for nuts to reach maturity. The analysis took advantage of an existing linkage map developed from a population of F₁ progeny bred from the cross "Tonda Gentile delle Langhe" × Frontiers in plant science749394https://www.ebi.ac.uk/biostudies/studies/S-EPMC8733624biostudies-literatureMapping the Genetic Regions Responsible for Key Phenology-Related Traits in the European Hazelnut.PMC8733624Valentini NAcquadro APavese VTorello Marinoni DBotta RCavalet Giorsa EPortis EfalseMapping the Genetic Regions Responsible for Key Phenology-Related Traits in the European Hazelnut.An increasing interest in the cultivation of (European) hazelnut (<i>Corylus avellana</i>) is driving a demand to breed cultivars adapted to non-conventional environments, particularly in the context of incipient climate change. Given that plant phenology is so strongly determined by genotype, a rational approach to support these breeding efforts will be to identify quantitative trait loci (QTLs) and the genes underlying the basis for adaptation. The present study was designed to map QTLs for phenology-related traits, such as the timing of both male and female flowering, dichogamy, and the period required for nuts to reach maturity. The analysis took advantage of an existing linkage map developed from a population of F₁ progeny bred from the cross "Tonda Gentile delle Langhe" × 2021-01-01T00:00:00Z20212025-06-01T12:05:55.471Z2025-06-01T12:05:55.471ZS-EPMC87336243500315310.3389/fpls.2021.749394