Distinct Morpho-Physiological Responses of Maize to Salinity Stress - American Journal of Plant Sciences

AJPS > Vol.12 No.6, June 2021

American Journal of Plant Sciences

Volume 12, Issue 6 (June 2021)

ISSN Print: 2158-2742 ISSN Online: 2158-2750

Google-based Impact Factor: 1.20 Citations h5-index & Ranking

Distinct Morpho-Physiological Responses of Maize to Salinity Stress ()

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DOI: 10.4236/ajps.2021.126064 499 Downloads 2,444 Views Citations

Author(s)

Tshegofatso Bridget Dikobe^*, Boitumelo Mashile, Rotondwa Rabelani Sinthumule, Oziniel Ruzvidzo

Affiliation(s)

Department of Botany, School of Biological Sciences, North-West University, Mmabatho, South Africa.

ABSTRACT

Most plants demonstrate wide interactive and complex adaptive morphological, biochemical, and physiological responses when subjected to salinity stress. Salt stress negatively impacts agricultural yields more especially cultivated crops throughout the world. Of interest to this study is maize a salt- sensitive crop that is widely grown worldwide, and receiving most attention due to its significant attributes and ability to serve as a great model for stress response studies. We exposed QN701 maize cultivar, to simulated salinity stress and investigated its morphological and physiological responses. Salinity negatively induced various morphological responses such as the reduction in plant height, number of leaves, shoot and root (length and biomass), and leaf width; however, it significantly increased the leaf area. On the physiological aspect, salt stress decreased the number of stomata, stomatal density, and photosynthesis, while it increased the respiration rate. This study expanded our knowledge of the morphological and physiological responses of maize to salinity stress. Additionally, these findings may serve as a recommendation for salinity breeding programs in maize and related cereal crops.

KEYWORDS

Zea mays, Salt Stress, Plant Morpho-Physiological Response, Photosynthesis, Respiration

Share and Cite:

Dikobe, T. , Mashile, B. , Sinthumule, R. and Ruzvidzo, O. (2021) Distinct Morpho-Physiological Responses of Maize to Salinity Stress. American Journal of Plant Sciences, 12, 946-959. doi: 10.4236/ajps.2021.126064.

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