Means, standard deviations (SD), coefficients of variation (CV) and t-test results (P, in bold) for the agronomic morphological traits for the four different sub-groups within the Upper Guinea Coast.

UpperSL = material from Sierra Leone; UpperGB = material from Guinea Bissau; UpperGc = material from Guinea; Cluster 4-1 = material belonging to the sub-cluster of Cluster 4 with erect and semi-droopy panicles; Cluster 4-2 = material belonging to the sub-cluster of Cluster 4 with droopy panicles; 4-1 Erect = material of Cluster 4-1 with erect panicle; 4-1 semi droopy = material belonging to Cluster 4-1 with semi-droopy panicle.