Phenotypic variations of three upland rice (Oryza sativa L.) genotypes

This study was conducted to assess the phenotypic variations of three rain-fed upland rice genotypes (Faro 59, 64, and 'Art'). The study was conducted at the Teaching and Research Farm of Akwa Ibom State University, Oruk Anam L.G.A., in Akwa Ibom State, Nigeria, from August- November 2021. The three upland rice genotypes were planted in a plot using a randomized complete block design in four replications. Data were analyzed using a one way analysis of variance, and means separation was done using the Fisher's Least Significance Difference. Results showed significant differences in plant height at 10 weeks after planting. Faro 64 and Art had the highest mean heights of 100.15 cm and 'Art' had 97.82 cm, while Faro 59 had the least mean height of 92.95 cm respectively. There were significant differences in primary number of tillers/plant among the three rice cultivars. Faro 59 had the highest mean primary tillers-4 tillers/plant. Similarly, Faro 59 had the highest mean values for other traits in order of: panicle weight-3.34 g; 100 grain weight- 2.90 g; and grain yield-4.2 tons/hectare. The results of this study proved that Faro 59 had a greater advantage over 'Art' and Faro 64 with respect to most phenotypic traits (grain weight, panicle weight and primary tiller numbers/plant), and therefore is recommended for further research in this study area.