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. 2018 Oct 18;19(10):3225. doi: 10.3390/ijms19103225

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Phenotypic (A–C) and physiological (D–G) responses of two maize inbred lines to drought stress. Phenotypic displays presented here are for three-leaf-stage seedlings after 7 days of moisture deficit treatment. (A) MO17 and YE8112 inbred lines under non-stressed (water-sufficient) conditions; (B) sensitive line MO17 drought stressed; (C) tolerant line YE8112 drought stressed; (D–G) physiological changes were measured in leaf tissues at different stress exposure periods/time points (1, 3, 5, and 7 days); (D) leaf relative water content, (E) peroxidase (POD) enzyme activity, (F) proline content and (G) level of lipid peroxidation (MDA (malondialdehyde) content). Data are presented as the mean ± standard error (n = 3). Different letters above line graphs show significant difference among treatments at a given day of treatment (p ≤ 0.05).