Evaluation of Genetic Variations and Agronomic Performance of Some Cultivars of White Yam (Dioscorea rotundata) in Obio Akpa, Nigeria

Field experiments were conducted in 2020 and 2021 at Teaching Research Farm of Akwa Ibom State University, Ikot Ekaideh, Obio Akpa Campus, Oruk Anam Local Government Area to assess Genetic Variability the Agronomic Performance ten different cultivars White Yam (Dioscorea rotundata). The laid out a Randomized Complete Block design (RCBD) replicated three times. Data analysis was done using statistical software (SPSS 20 version). Results indicated differences for some traits studied. However, there significant difference (P<0.05) number tubers, weight stem plant, sprout length. genetic variability assessment that phenotype Variation (PCV) higher than Genotypic Coefficient (GCV) all traits, which suggests influence environment on study genotypes. Moderate heritability advance values recorded length, plant vigor 8 weeks, 16 32 tubers suggesting these as good selection improvement. high Advance value length improvement this trait will be successful. Hence, cultivar TDR110180, TRD 1401593, TDR 1401785, 1100128 tend preferred white yam they exhibited longest maximum mean number, tuber earliest attend 8, weeks after planting respectively.