Abstract
The results of the present study support the idea that, the tested Egyptian barley cultivars could make a useful case study for genetic diversity research. When those cultivars were examined using three distinct markers (codon targeted (SCoT), sequence-related amplified polymorphism (SRAP) and inter-simple sequence repeats (ISSR)). According to SRAP, ISSR, and SCoT analyses, respectively 85, 76, and 66 polymorphism percentages among the seven tested barley cultivars were detected. The genotype specific markers for each genotype used were determined. The data revealed that Giza127 had the highest number of unique markers, showing six specific SCoT markers, three specific SRAP markers, and one specific ISSR marker. The genetic relationships between the seven Egyptian barley cultivars are explained by the phylogenetic tree built using information gathered from various molecular markers. These gene-based molecular markers demonstrated the reliability of SCoT, ISSR, and SRAP molecular markers for identifying DNA polymorphism levels and genetic relationships in barley.
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