Potato is an important world crop. More than a billion people eat potatoes globally and Potato has been highly recommended by the Food and Agriculture Organization (FAO) as a food security crop. Studies on Genotypic variation is an essential component of any conventional crop breeding programme. Conventionally, plant breeders recombine the desired genes from crop varieties and related species by sexual hybridization, and develop new cultivars with the desirable traits such as high yield and resistance to disease, insect and pests, and drought. This book was assessed the the genetic variability of this crop for developing cultivars.