Ms. Sadiq et al., WHEAT BREEDING IN A WATER-STRESSED ENVIRONMENT .5. CARBON-ISOTOPE DISCRIMINATION AS A SELECTION CRITERION, Cereal Research Communications, 25(1), 1997, pp. 43-49
To assess the potential of carbon isotope discrimination as a selectio
n criterion for enhancing stress yield, simulated water deficit field
studies were undertaken to measure its genetic variation and associati
on with yield and yield related traits. Discrimination was significant
ly reduced in terminal stress compared to well watered conditions. Car
bon isotope discrimination was significantly correlated with grain yie
ld, biological yield, harvest index, and productive tillers under term
inal and preanthesis stress.