Physiological and yield responses of contrasting upland rice genotypes towards induced drought.

ABSTRACT: Drought alters rice morphophysiology and reduces grain yield. This study hypothesized that the combined analysis of morphophysiological and agronomic traits enables a systemic approach to responses to water deficit, allowing the selection of resistance markers to upland rice. The objectives were to evaluate the effects of water deficit applied at the reproductive stage in plant water status, leaf gas exchanges, leaf non-structural carbohydrate contents, and agronomic traits in upland rice genotypes; and to verify if the analyzed variables may be applied to group the genotypes according to their tolerance level. Water deficit was induced by irrigation suppression in eight genotypes at R2-R3. Physiological and biochemical traits were evaluated at the end of the water deficit period, thencefo

SUBMITTER: da Mata CR 

PROVIDER: S-EPMC9981851 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature