Fig. 2From: Genome-wide association analysis of forage quality in maize mature stalkPhenotypic variation of forage quality traits in sub-groups of association panel. The phenotype distribution of ADF, NDF, and IVDMD in each sub-group are shown in a, b and c, respectively. Mixed: Mixed group; SS: Stiff stalk; NSS: Non-stiff stalk; TST: Tropical and sub-tropicalBack to article page