2D representation of the plant architecture in strawberry

Labadie Marc, Caraglio Yves, Pradal Christophe, Denoyes Béatrice. 2023. 2D representation of the plant architecture in strawberry. In : Proceedings of the International Symposium on Advances in Berry Crops. McCallum, S. (ed.) ; Denoyes, B. (ed.). ISHS. Louvain : ISHS, 163-168. (Acta Horticulturae, 1381) ISBN 978-94-6261-380-5 International Horticultural Congress (IHC 2022): International Symposium on Advances in Berry Crops. 31, Angers, France, 14 Août 2022/20 Août 2022.

Résumé : The development of soil-less cultivation for strawberry production is a current major socio-economic issue. This technique improves competitiveness by early planting (December) in heated greenhouses, allowing an extension of flowering and thus of fruit production. Our objective is to better understand the strategy of different varieties to extend flowering by studying the spatiotemporal development of plant architecture. In a previous phenological study, specific flowering patterns were identified in six cultivated varieties (Labadie et al. 2019). Here, we designed a 2D visualisation and an analysis approach to represent the plant architecture and its development. Our analysis approach was applied in six strawberry varieties. Subsets of plants were dissected at successive dates during the season in order to understand the architectural development. All structures (buds, order of the axes, number of leaves on each axis etc) were described. Results showed architectural patterns are highly conserved in genotypes and differ in the rate of architecture formation. All genotypes had a higher number of leaves and of flowers on the axis of order 0 (main crown or primary crown). These numbers decreased sharply in axes of order 1 (axes produced by axillary meristems present on the axis of order 0) and continued to decrease in axes of orders >=2 for flowers by inflorescences. Our 2D visualisation can be further used in breeding programs to evaluate varieties.

Mots-clés libres : OpenAlea, MTG, Fragaria × ananassa, Plant architecture, Visualization

Agences de financement européennes : European Commission

Agences de financement hors UE : Conseil Régional Aquitaine, EIT Climate-KIC

Projets sur financement : (EU) Improving the stability of high-quality traits of berry in different environments and cultivation systems for the benefit of European farmers and consumers, (EU) Pre-breeding strategies for obtaining new resilient and added value berries, (FRA) AgirClim, (EU) Friendly Fruit

Auteurs et affiliations

• Labadie Marc, CIRAD-BIOS-UMR AGAP (FRA)
• Caraglio Yves, CIRAD-BIOS-UMR AMAP (FRA)
• Pradal Christophe, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-2555-761X
• Denoyes Béatrice, INRAE (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/607747/)

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