Understanding the Role of Gibberellic Acid and Paclobutrazol in Terminal Heat Stress Tolerance in Wheat.

ABSTRACT: Understanding the physiological mechanism of tolerance under stress conditions is an imperative aspect of the crop improvement programme. The role of plant hormones is well-established in abiotic stress tolerance. However, the information on the role of gibberellic acid (GA) in abiotic stress tolerance in late sown wheat is still not thoroughly explored. Thus, we aimed to investigate the role of endogenous GA₃ level in stress tolerance in contrasting wheat cultivars, viz., temperature-tolerant (HD 2643 and DBW 14) and susceptible (HD 2189 and HD 2833) cultivars under timely and late sown conditions. We created the variation in endogenous GA₃ level by exogenous spray of GA₃ and its biosynthesis inhibitor paclobutrazol (PBZ). Tolerant genotypes had hig

SUBMITTER: Nagar S 

PROVIDER: S-EPMC8417122 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature