Genetics, polyploidy, and inheritance
This topic explores the genetic makeup of coffee species, how polyploidy shaped Arabica’s evolution, and why inheritance patterns are key to breeding programs and future resilience.
Lasting importance
Arabica vs Canephora (Robusta) vs Liberica/Excelsa
This topic compares the three main commercial coffee species—Arabica, Robusta (Canephora), and Liberica/Excelsa—covering their genetics, cultivation environments, bean traits, flavor profiles, and market roles.
Genus Coffea and major species overview
This topic introduces the genus Coffea, explains its major species, and outlines their biological traits, cultivation differences, and global significance.