Dendrogram of NJ cluster analysis of 132 sweet potato accessions.

<p>A represents Tropical-Sahelian accessions group 1; B Tropical accessions, C Tropical arid accessions, D Sahelian accessions, and E Tropical-Sahelian accessions group 2. The number indicates the number of accessions. The bootstrap value is given on the branch of the tree.</p

Mean number of alleles in the different regions.

<p>America has the highest number of alleles, approximately 11, followed by Oceania with 9 and Africa with 7.</p

Polymorphic Index Content (PIC) of SSR markers.

<p>The values indicate the PIC of the loci used to analyze our 132 African accessions. Each locus value corresponds to the mean PIC of all the alleles of the corresponding markers. The last bar represents the mean PIC of the 12 markers.</p

Distribution of the genetic group per village.

<p>Distribution of the genetic group per village.</p

Kruskall-Wallis test between genetic group and agro-morphological traits.

<p>Kruskall-Wallis test between genetic group and agro-morphological traits.</p

Geographical distribution of the genetic groups.

<p>In the villages sampled, each color represents one genetic group. The number of colors in each circle corresponds to the number of genetic groups found in the village concerned. The size of the circle is proportional to the number of samples. The total surface area of each color is also proportional to number of samples in that genetic group.</p