Environmental Factors Determining Carbon Isotope Discrimination and Yield in Durum Wheat under Mediterranean Conditions

The effect of environment on the relationship between grain carbon isotope discrimination (Δ) and yield was studied for durum wheat ( Triticum turgidum L. var. durum ) under Mediterranean conditions. A group of 25 genotypes was grown under contrasting water regimes in two regions of Spain during three years. The first objective was to determine the environmental factors responsible for the strong positive relationship previously observed between...