125934 - Drought induced changes in growth, osmolyte accumulation and antioxidant metabolism of three maize hybrids.pdf (1.18 MB)
Drought induced changes in growth, osmolyte accumulation and antioxidant metabolism of three maize hybrids
journal contribution
posted on 2023-05-19, 18:04 authored by Anjum, SA, Ashraf, U, Mohsin TanveerMohsin Tanveer, Khan, I, Hussain, S, Shahzad, B, Zohaib, A, Abbas, F, Saleem, MF, Ali, I, Wang, LCConsequences of drought stress in crop production systems are perhaps more deleterious than other abiotic stresses under changing climatic scenarios. Regulations of physio-biochemical responses of plants under drought stress can be used as markers for drought stress tolerance in selection and breeding. The present study was conducted to appraise the performance of three different maize hybrids (Dong Dan 80, Wan Dan 13, and Run Nong 35) under well-watered, low, moderate and SD conditions maintained at 100, 80, 60, and 40% of field capacity, respectively. Compared with well-watered conditions, drought stress caused oxidative stress by excessive production of reactive oxygen species (ROS) which led to reduced growth and yield formation in all maize hybrids; nevertheless, negative effects of drought stress were more prominent in Run Nong 35. Drought-induced osmolyte accumulation and strong enzymatic and non-enzymatic defense systems prevented the severe damage in Dong Dan 80. Overall performance of all maize hybrids under drought stress was recorded as: Dong Dan 80 > Wan Dan 13 > Run Nong 35 with 6.39, 7.35, and 16.55% yield reductions. Consequently, these biochemical traits and differential physiological responses might be helpful to develop drought tolerance genotypes that can withstand water-deficit conditions with minimum yield losses.
History
Publication title
Frontiers in Plant ScienceVolume
8Article number
69Number
69Pagination
1-12ISSN
1664-462XDepartment/School
Tasmanian Institute of Agriculture (TIA)Publisher
Frontiers Research FoundationPlace of publication
SwitzerlandRights statement
Copyright 2017 Anjum, Ashraf, Tanveer, Khan, Hussain, Shahzad, Zohaib, Abbas, Saleem, Ali and Wang. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/Repository Status
- Open