Time course of biochemical, physiological, and molecular responses to field-mimicked conditions of drought, salinity, and recovery in two maize lines.

ABSTRACT: Drought and salinity stresses will have a high impact on future crop productivity, due to climate change and the increased competition for land, water, and energy. The response to drought (WS), salinity (SS), and the combined stresses (WS+SS) was monitored in two maize lines: the inbred B73 and an F1 commercial stress-tolerant hybrid. A protocol mimicking field progressive stress conditions was developed and its effect on plant growth analyzed at different time points. The results indicated that the stresses limited growth in the hybrid and arrested it in the inbred line. In SS, the two genotypes had different ion accumulation and translocation capacity, particularly for Na(+) and Cl(-). Moreover, the hybrid perceived the stress, reduced all the analyzed physiological parameters, and kept

SUBMITTER: Morari F 

PROVIDER: S-EPMC4429227 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature