Flowering Phenology of Six Seasonal-Flowering Strawberry Cultivars in a Coordinated European Study
2022
Krüger, Erika | Woznicki, Tomasz, L | Heide, Ola, M | Kusnierek, Krzysztof | Rivero, Rodmar | Masny, Agnieszka | Sowik, Iwona | Brauksiepe, Bastienne | Eimert, Klaus | Mott, Daniela | Savini, Gianluca | Demene, Marino | Guy, Karine | Petit, Aurélie | Denoyes, Beatrice | Sønsteby, Anita | Hochschule Geisenheim University | Norsk institutt for bioøkonomi=Norwegian Institute of Bioeconomy Research (NIBIO) | Norwegian University of Life Sciences (NMBU) | The National Institute of Horticultural Research | Sant’Orsola Società Cooperativa Agricola | Invenio | Biologie du fruit et pathologie (BFP) ; Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | This work was founded by the European Union's H2020 Programme (GoodBerry; grant number 679303). We acknowledge support from the Open Access Publishing Fund of Geisenheim University. | European Project: 679303,H2020,H2020-SFS-2015-2,GoodBerry(2016)
International audience
Afficher plus [+] Moins [-]anglais. The flowering phenology of six genetically distant strawberry cultivars (‘Candonga®’ (ES), ‘Clery’ (IT), ‘Florence’ (UK), ‘Frida’ (NO), ‘Gariguette’ (FR), and ‘Sonata’ (NL)) was studied for 3 years in relation to climatic parameters in open-field cultivation at three locations (Norway, Poland, Germany) and in soil-less cultivation at two locations (Italy, and France), covering a distance of 16 degrees of latitude. This proved to be a useful approach for unravelling the climatic adaptation and plasticity of strawberry genotypes and their suitability both for profitable cultivation and as a breeding pedigree. Despite the intercorrelated character of the climatic variables, the observed results highlight the importance of global radiation as a powerful modifying phenological factor in strawberry. Generally, early flower initiation was associated with elevated temperature and global radiation. ‘Frida’ revealed the highest dependency on global radiation for flower initiation, while ‘Sonata’ was least affected by temperature and radiation. In general, temperature and global radiation in periods both preceding and following flower initiation had a stronger positive effect on the number of flowers than on crowns, especially under open-field conditions. The influence of these factors was highly variable across the cultivars: ‘Clery’, ‘Florence’, and ‘Gariguette’ were most affected, while ‘Frida’ was least influenced.
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