This chapter delves into advancements in somatic chromosome preparation in molecular cytogenetics, specifically the enzymatic maceration and air drying (EMA) method. Traditional plant cytogenetics has faced challenges due to the thick cell walls and cytoplasm of plant cells, hindering high-quality chromosome preparation and molecular analysis. The EMA technique, developed since the 1970s, overcomes these limitations by removing cytoplasmic debris to free the chromosomes, thereby allowing detailed examination and molecular insights. Grounded in the foundational work of Emil Heitz, the chapter highlights the significance of heterochromatin and euchromatin in understanding chromosome morphology, further enhanced by advancements in DNA analysis. The repetitive DNA sequences identified within plant genomes serve as essential molecular markers for studying genetic diversity and genome evolution. This chapter also underscores the dynamic nature of centromeres and their varied DNA organization across species. By utilizing EMA-based preparations with Giemsa staining and fluorescent dyes, researchers can visualize distinct morphological and molecular characteristics of chromosomes, including the identification of heterochromatic regions and nucleolar organizing regions (NOR). The chapter concludes with a detailed EMA-based protocol tailored for specific species, offering valuable resources for educational purposes and advancing the field of plant molecular cytogenetics. Through this comprehensive overview, the chapter aims not only to enhance understanding but also to facilitate further research and exploration in chromosome analysis and cytogenetic techniques.