Drought Tolerance and Application of Marker-Assisted Selection in Sorghum

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dc.contributor.authorMwamahonje, Andekelile
dc.contributor.authorEleblu, John Saviour Yaw
dc.contributor.authorOfori, Kwadwo
dc.date.accessioned2023-04-30T12:14:25Z
dc.date.available2023-04-30T12:14:25Z
dc.date.issued2021-11-30
dc.descriptionBiology, Volume 10, Issue 12en_US
dc.description.abstractSorghum is an important staple food crop in drought prone areas of Sub-Saharan Africa, which is characterized by erratic rainfall with poor distribution. Sorghum is a drought-tolerant crop by nature with reasonable yield compared to other cereal crops, but such abiotic stress adversely affects the productivity. Some sorghum varieties maintain green functional leaves under post-anthesis drought stress referred to as stay-green, which makes it an important crop for food and nutritional security. Notwithstanding, it is difficult to maintain consistency of tolerance over time due to climate change, which is caused by human activities. Drought in sorghum is addressed by several approaches, for instance, breeding drought-tolerant sorghum using conventional and molecular technologies. The challenge with conventional methods is that they depend on phenotyping stay-green, which is complex in sorghum, as it is constituted by multiple genes and environmental effects. Marker assisted selection, which involves the use of DNA molecular markers to map QTL associated with stay-green, has been useful to supplement stay-green improvement in sorghum. It involves QTL mapping associated with the stay-green trait for introgression into the senescent sorghum varieties through marker-assisted backcrossing by comparing with phenotypic field data. Therefore, this review discusses mechanisms of drought tolerance in sorghum focusing on physiological, morphological, and biochemical traits. In addition, the review discusses the application of marker-assisted selection techniques, including marker-assisted backcrossing, QTL mapping, and QTL pyramiding for addressing post-flowering drought in sorghum.en_US
dc.description.sponsorshipACE: Crop Improvementen_US
dc.identifier.citationMwamahonje, A., Eleblu, J. S. Y., Ofori, K., Deshpande, S., Feyissa, T., & Tongoona, P. (2021). Drought tolerance and application of marker-assisted selection in sorghum. Biology, 10(12), 1249.en_US
dc.identifier.issn2079-7737
dc.identifier.urihttps://doi.org/10.3390/biology10121249
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.subjectdrought toleranceen_US
dc.subjectmarker-assisted selectionen_US
dc.subjectpost-floweringen_US
dc.subjectQTL mappingen_US
dc.subjectsorghumen_US
dc.subjectstay-greenen_US
dc.subjectSantosh Deshpandeen_US
dc.subjectTileye Feyissaen_US
dc.subjectPangirayi Tongoonaen_US
dc.subjectAgricultureen_US
dc.subjectUniversity of Ghanaen_US
dc.titleDrought Tolerance and Application of Marker-Assisted Selection in Sorghumen_US
dc.typeArticleen_US
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