Does the structure-function model GREENLAB deal with crop phenotypic plasticity induced by plant spacing? A case study on tomato

Annals of Botany
Qiao Xue DongPhilippe de Reffye

Abstract

Plant growth models able to simulate phenotypic plasticity are increasingly required because (1) they should enable better predictions of the observed variations in crop production, yield and quality, and (2) their parameters are expected to have a more robust genetic basis, with possible implications for selection of quantitative traits such as growth- and allocation-related processes. The structure-function plant model, GREENLAB, simulates resource-dependent plasticity of plant architecture. Evidence for its generality has been previously reported, but always for plants grown in a limited range of environments. This paper aims to test the model concept to its limits by using plant spacing as a means to generate a gradient of competition for light, and by using a new crop species, tomato, known to exhibit a strong photomorphogenetic response. A greenhouse experiment was carried out with three homogeneous planting densities (plant spacing = 0.3, 0.6 and 1 m). Detailed records of plant development, plant architecture and organ growth were made throughout the growing period. Model calibration was performed for each situation using a statistical optimization procedure (multi-fitting). Obvious limitations of the present version of ...Continue Reading

Citations

Dec 21, 2017·Frontiers in Plant Science·Ahan DalalMenachem Moshelion
May 25, 2012·The New Phytologist·MengZhen KangPhilippe de Reffye
Feb 1, 2009·Functional Plant Biology : FPB·Benoît PallasJérémie Lecoeur

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