Wheat Cultivars With Contrasting Root System Size Responded Differently to Terminal Drought.

ABSTRACT: In the Mediterranean-type environment of Australia and other parts of the world, end-of- season or terminal drought is the most significant abiotic stress affecting wheat grain yields. This study examined the response of two wheat cultivars with contrasting root system size to terminal drought and the effect of terminal drought on grain yield and yield components. The cultivars were grown in 1.0 m deep PVC columns filled with soil in a glasshouse under well-watered conditions until the onset of ear emergence (Z51) when well-watered and terminal drought treatments were imposed. Terminal drought reduced stomatal conductance, leaf photosynthesis, and transpiration rates faster in Bahatans-87 (larger root system size) than Tincurrin (smaller root system size). Terminal drought reduced grain yi

SUBMITTER: Figueroa-Bustos V 

PROVIDER: S-EPMC7466772 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature