Difference in the flowering response of cabbage scions grafted onto various early-flowering B. oleracea and R. sativus rootstocks. (A) Representative pictures of grafted plants at 63 DAG. White arrowheads indicate graft junction. Scale bars = 10 cm. (B) Floral status of the apical meristem of scions at 63 DAG. Figures in the bars indicate the number of plants. (C) Relationship between the leaf area of rootstocks at 0 DAG and the maximum stem diameter of the grafted scions at 35 DAG. The linear correlation coefficient is shown in the graph.