Transpiration response of two bread wheat lines differing in drought resilience and their backcross parent under dry-down conditions.

ABSTRACT: Improving wheat productivity in drylands largely depends on how plants manage limited water resources. Using fraction of transpirable soil water threshold (FTSW_Th) and drought stress response function, we characterized the water conservation traits of two wheat multiple synthetic derivative lines (MSD53 and MSD345) which both contain introgressed segments from Aegilops tauschii but differ in drought resilience. The lines and their backcross parent, 'Norin 61', were subjected to dry-down conditions. MSD53 had a higher FTSW_Th for transpiration decrease than 'Norin 61' and MSD345. In terms of drought stress response function, MSD53 had the lowest threshold suction, suggesting a lower drought resilience capacity compared with MSD345. However, MSD53 exhibited an eff

SUBMITTER: Itam MO 

PROVIDER: S-EPMC8784354 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature