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Sorghum as a Model Crop for Drought Stress Tolerance

Sorghum is one of the most significant C4 cereal crops grown in dry and semi-arid regions of the world. It is a major staple crop for millions of people in Sub-Saharan Africa and South Asia. Drought is an important constraint on agricultural production and productivity around the world. It has a significant impact on plant growth, development, and yields. Drought stress risks food security by having a substantial impact on sorghum growth and development, grain yields, and nutritional quality. Sorghum has become known as a drought-tolerant model crop when compared with many other crops. Its ability to withstand extreme environmental conditions makes it a feasible model crop for studying abiotic stress responses and developing stress-tolerant crops. Sorghum response and/or tolerance mechanisms include morphological, physiological, and molecular changes. Drought stress tolerance mechanisms in sorghum include drought escape, early flowering, stay-green, drought avoidance, leaf area, osmotic adjustment, stomata-mediated drought responses, cuticular wax production, root characteristics, and drought tolerance. Biotechnology and its advanced approaches, such as QTL, marker-assisted backcrossing, genetic engineering, and others, are used for screening drought-tolerant genotypes that can withstand drought stress. Therefore, focusing on the drought-tolerant genotypes will boost the speed of the sorghum breeding program, which will feed millions of people worldwide, particularly in Sub-Saharan Africa.

Drought, Drought Tolerance, Grain Yield, Sorghum, Stay-Green

APA Style

Mulatu Gidi. (2023). Sorghum as a Model Crop for Drought Stress Tolerance. Advances in Bioscience and Bioengineering, 11(3), 54-65. https://doi.org/10.11648/j.abb.20231103.14

ACS Style

Mulatu Gidi. Sorghum as a Model Crop for Drought Stress Tolerance. Adv. BioSci. Bioeng. 2023, 11(3), 54-65. doi: 10.11648/j.abb.20231103.14

AMA Style

Mulatu Gidi. Sorghum as a Model Crop for Drought Stress Tolerance. Adv BioSci Bioeng. 2023;11(3):54-65. doi: 10.11648/j.abb.20231103.14

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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