Abstract

Ten Sorghum (Sorghum bicolor L. Moench) lines were evaluated during the 2010 rainy season at Usmanu Danfodiyo University, teaching and research farm, Sokoto, Sokoto State, and during 2011 rainy season at Bubuche, Augie Local Government Area, Kebbi State, in North-Western Nigeria. The objective of the study was to determine the influence of Genotype by Environment interaction on yield of Sorghum. The materials used in the study consisted of ten indigenous grain sorghum genotypes representing the types grown in North-Western Nigeria, which were collected by the National Center for Genetic Resources and Biotechnology (NACGRAB), Moor plantation, Ibadan, Nigeria. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications, each pot size was 6m x 3m, with 75cm as inter row spacing, 30 cm intra-row spacing and a total of 240 plants per plot after thinning were used. Study revealed that genotype by environment interaction (G X E) had significant (p ≥ 0.01) influence for flag leaf area (821.07**), indicating that selection for the trait is not possible at one location. In contrast there was no significant genotype by environment interaction influence on leaf number (3.28), leaf length (36.58), plant height (271.01), leaf area index (0.22) straw weight (5.52), 100-seed weight (38.95), and total grain yield (1.32). Suggesting that selection for these traits can be done at one location simultaneously.