Abstract
This survey is concerned with the hereditary differences of 29 wild plants collected from fifteen different regions in Al Jubail, Saudi Arabia using two molecular marker systems, viz. inter simple sequence repeat (ISSR) and start codon targeted (SCoT) molecular markers. Ten ISSR and ten SCoT primers amplified a total of 142 and 163 bands with a 87% and 84% polymorphism, respectively. The average number of polymorphic bands for each pair of ISSR and SCoT primers combinations was 12.4 and 13.7, respectively. The highest genetic similarity for ISSR (0.97) and SCoT (0.90) were recognized between Zygophyllum qatarense-22 and Juncus rigidus-23, and between Zygophyllum qatarense-28 and Zygophyllum qatarense-29, whereas the lowest was (0.59) differentiated between Zygophyllum qatarense-6 and Salsola imbricate-18 for ISSR and between Cyperus conglomeratus-7 and Halopeplis perfoliata-14 for SCoT. This considers confirmed the value of molecular techniques such as ISSR and SCoT to assess the hereditary differences among the selected 29 weeds for hereditary preservation and plant enhancement.
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