International Journal of Molecular Evolution and Biodiversity, 2025, Vol.15, No.2, 73-83 http://ecoevopublisher.com/index.php/ijmeb 79 In East and Central Africa, researchers have studied genetic differences in sorghum by analyzing its DNA. They used tools such as microsatellite markers to analyze sorghum samples from Sudan, Kenya, and Ethiopia. These studies found that sorghum in the region has a high degree of genetic diversity. Different regions and different sorghum races show unique genetic patterns (Salih et al., 2016). In Ethiopia, scientists used SNP markers to study 359 samples. The results showed a clear genetic population structure and high heterozygosity was observed in some samples. This rich diversity is of great value for breeding work (Enyew et al., 2022). These results show that African sorghum contains rich genetic resources and has great potential for crop improvement. 5.3 Lessons from other regions Many important insights from the study of African sorghum are worth referencing for other regions. For example, the value of local germplasm and traditional varieties is often underestimated. In fact, it is these "old varieties" that often hide key genes that can resist adverse environments such as drought and high temperatures. Instead of chasing after repairs afterwards, it's better to protect these local resources first. The diversity of African sorghum illustrates one thing: local resources that will be available in the future. Another point worth noting is the efficient application of modern genetic tools. Whether it's GBS or SNP markers, these technologies can help researchers find genetic signals related to important traits faster and more accurately. In the study of African sorghum, such tools have proven their practical value; And their applicability can also be fully extended to other crops and regions. 6 Utilizing the Genetic Diversity of Sorghum for Breeding Work 6.1 Screening for suitable and excellent traits If you want to cultivate sorghum varieties with better performance and stronger adaptability, the first step is to identify valuable traits from their genes. Existing research has shown that there are significant differences in agricultural traits among different types of sorghum - this is actually a resource, not a problem. Taking Ethiopia as an example, researchers have found that sorghum there exhibits significant differentiation in plant height, flowering time, and grain yield (Birhanu et al., 2020; Enyew et al., 2022). These differences are not just data, but also suggest that we can selectively select breeding materials suitable for different ecological environments, thereby improving the adaptability and stability of new varieties. 6.2 Combination of hybrid breeding and molecular-assisted tools Hybridization is a common method in breeding. Hybridization of different types of sorghum can introduce new genes. In one study, researchers used wild-type sorghum to construct a BC1F1 backcross population, screened out individuals with outstanding performance of important traits such as drought resistance, and introduced new genes into the breeding line (Jordan et al., 2011). This method not only increases genetic diversity, but also improves the performance of key traits such as yield. In recent years, new technologies such as molecular-assisted selection (MAS) and genomic selection (GS) have further accelerated the breeding process. Through DNA markers such as SNPs and SSRs, breeders can directly identify genes associated with target traits. For example, using GBS technology, researchers have discovered multiple SNP loci associated with plant height and flowering time (Faye et al., 2021). These tools enable breeders to select suitable parents at an early stage, significantly improving the efficiency and success rate of sorghum breeding, especially in responding to climate stress. 6.3 Real success stories in sorghum breeding Some breeding projects have already used genetic diversity and modern tools with great success. In Ethiopia, scientists found sorghum types that produced more grain and had traits that farmers like, such as medium plant height. These types were used to make new varieties that grow better and yield more in different conditions.
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