Context

Context

The growth of leaves or reproductive organs is affected by water deficit before any reduction in photosynthetic activity or root growth. The objective of the PHENODYN platform is to enable the genetic analysis of growth and gas exchange, which vary rapidly with environmental conditions.

We are trying to understand the genetic basis for differences in growth rates, responses to temperature, evaporative demand or soil water deficit. Elongation, transpiration and environmental kinetics are dissected into more heritable traits (maximum rate and sensitivity) that are stable characteristics of genotypes, which we subject to genetic analysis.
Phenodyn has been used to detect QTLs for sensitivity of leaf elongation rate to soil water deficit and evaporative demand, for physiological analyses using transgenic or introgressed lines, and to analyse genetic variability of growth and its sensitivities to environmental conditions in panels of lines from different geographical areas and genetic origins. Phenodyn has been tested in maize leaves, rice leaves and maize silks.

Modification date : 17 July 2023 | Publication date : 17 June 2021 | Redactor : Aurélien Ausset