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.