Alternaria alternata is one of the most important fungi causing various diseases on citrus worldwide. In Morocco. Alternaria black rot (ABR) and Alternaria brown spot (ABS) are two major diseases causing serious losses in commercial cultivars of citrus. The aim of the present work was to study the genetic diversity and the population structure of isolates belonging to sect. https://unitedssports.shop/product-category/ball-training-aids/