Figure 4
From: The Response of COL and FT Homologues to Photoperiodic Regulation in Carrot (Daucus carota L.)
Relative expression levels of DcGI, DcCOLs, DcFT1, and DcSOC1s in spring and autumn. (A) The bolting ratio of Ws and Af. The seeds were sown in the field under natural photoperiods and temperature conditions on 19 March (spring) and 4 August (autumn), respectively. The day lengths were about 16 h in spring and about 14 h in autumn, when Ws began to bolt. The white and gray frame represented the sun rising and setting time in spring and autumn. There were about 15 days with a low temperature below 10 °C after the seeds had germinated in spring. (B) The relative expression levels of DcGI, DcCOLs, DcFT1, and DcSOC1s in Ws and Af in spring and autumn by real-time qPCR. The leaves from five plants were sampled from 08:00 to 09:00 about 55, 63, 71, and 79 days after germinating in spring, and about 32, 39, 46, and 62 days after germinating in autumn, when the plants had about five leaves.
