Fig. 7.

The effects of high temperature on flowering in grafted C. morifolium plants. (A) The number of leaves at capitulum initiation. (B) Days to visible capitulum. (C) Days to anthesis. Plants were grown at 20 °C or 27 °C with a 10h photoperiod. ‘Mona Lisa’ and ‘Kurarisu’ are abbreviated to M and K, respectively, in the graph label. Values are means ±SE (n=5–12). *, **Significantly different from plants grown at 20 °C (Student’s t-test, P < 0.05, P < 0.01, respectively). (D) Representatives of each plant were photographed when plants grown at 20 °C reached the flowering stage. Bars indicate graft junctions. (This figure is available in colour at JXB online.)