Fig. 1

Phenotype of Abg fruits. a Tomatoes at the mature green stage from cv. Ailsa Craig (wild type, WT) (left), and Abg heterozygous genotype (Abg/+) (right). b Anthocyanin content measured in the fruit epicarp of WT and Abg/+ tomatoes at the mature green stage. Anthocyanins are expressed in mg petunidin-3-(p-coumaroyl-rutinoside)-5-glucoside g^− 1 fresh weight (FW). Data are means of six biological replicates. Unpaired t-test was carried out and **** asterisks indicate significant difference (P ≤ 0.0001). c Different patterns of anthocyanin accumulation in Abg fruits at the mature green and red stages. d Fruit morphology of Abg/Abg and Abg/+ plants. e Anthocyanin content measured in the fruit peel of Abg/Abg and Abg/+ tomatoes at the mature green stage. Anthocyanins are expressed in mg petunidin-3-(p-coumaroyl-rutinoside)-5-glucoside g^− 1 FW. Data are means of six biological replicates. Unpaired t-test (P ≤ 0.05) was carried out. Photographs are from the authors