Fig. 1From: Heterotic grouping of provitamin A-enriched maize inbred lines for increased provitamin A content in hybrids(A) Clustering of 60 PVA inbred lines and two testers using Ward’s method. (B) Estimated population structure of the inbred lines as revealed by the 1879 SNP markers for K = 3. Cluster 1, cluster 2, and cluster 3 are coloured with red, green, and blue, respectivelyBack to article page