Estimation of Genetic Variability among Potato (Solanum tuberosum) genotypes For Drought prone areas Of North Wollo Gazo District, Eastern Amhara Region

This study evaluates the genetic diversity of 49 drought-resistant potato genotypes at the Sirinka Agricultural Research Center during the 2023–2024 rainy seasons, with five varieties serving as standard checks. The research aimed to identify genotypes associated to phenotypic traits that enhance yield potential. The findings reveal high heritability for total starch content (80%) and significant genetic advancement, indicating strong improvement potential. Additionally, traits such as maturity and flowering timing also exhibited high heritability, suggesting opportunities for optimizing growth period. Conversely, while specific gravity displayed low genetic variability, it maintained 100% heritability, reflecting resilience to environmental variations. These results underscore the importance of integrating genetic and environmental considerations in breeding strategies, particularly for traits sensitive to environmental changes, thereby enhancing the development of superior potato genotypes.

KEYWORDS: Potato genotypes, Genetic variability, Heritability