Figure 3.

Interaction of Pro_35S:FT/TFT Plants with fd-1.

(A) The fd-1 mutation suppresses leaf phenotypes of Pro_35S:FT/TFT plants. Phenotypes of 21-d-old plants grown under white (top row, A4 in Table 1) or blue (bottom row, A5 in Table 1) short days (SDs). Dashed lines within panels border between different genotypes, grown together under identical conditions, and photographed separately at the same age. Bar = 1 cm.

(B) to (D) Flowering time of Pro_35S:FT plants and Pro_35S:TFT#3 plants in a wild-type or fd-1 homozygous mutant background. The different growth conditions, blue long days (LDs; A3), white short days (A4), and blue short days (A5), are depicted in each panel. Total leaf number of wild-type plants (data not shown) is 7 in A3 (see Figure 6C) and >30 in A4 (Table 2; see Supplemental Table 1 online) and A5. Under all conditions, a mutation in FD suppresses early flowering by 0.5 to 1.5 leaves. The major effect of FD is on rosette leaf number. The difference between the Pro_35S:FT and Pro_35S:TFT#3 plants becomes more clear under white short days, perhaps due to lack of internal FT under these conditions. Flowering time is measured by counting rosette (gray) and cauline (black) leaves. Mean leaf number is shown ± se (n = 5 to 22).