Book of abstracts of the 9th International Conference on Functional-Structural Plant Models: FSPM2020, 5-9 October 2020 CIRAD FSPM 2020-9th International Conference on Functional-Structural Plant Models FSPM 2020-9th International Conference on Functional-Structural Plant Models, Hochschule Geisenheim University; University of Hannover, Oct 2020, Hanovre / Virtual, Germany HAL