Identifying physiological and genetic determinants of faba bean transpiration response to evaporative demand.

ABSTRACT:

Background and aims

Limiting maximum transpiration rate (TR) under high vapour pressure deficit (VPD) works as a water conservation strategy. While some breeding programmes have incorporated this trait into some crops to boost yields in water-limited environments, its underlying physiological mechanisms and genetic regulation remain unknown for faba bean (Vicia faba). Thus, we aimed to identify genetic variation in the TR response to VPD in a population of faba bean recombinant inbred lines (RILs) derived from two parental lines with contrasting water use (Mélodie/2 and ILB 938/2).

Methods

Plants were grown in well-watered soil in a climate-controlled glasshouse with diurnally fluctuating VPD and light conditions. Whole plant transpiration was measured in a gas exchange cham

SUBMITTER: Mandour H 

PROVIDER: S-EPMC10072112 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature