Phenotypes of Flowering and Flower Development of Double Mutants.
(A) Plants of the wild type (plant 1), cdkc;2 (plant 2), cyct1;5 (plant 3), cdkc;2 cyct1;5 (plant 4), cdkc;2/CDKC;1 RNAi (plant 5), and cyct1;5/CYCT1;4 RNAi (plant 6) mutants grown under a 12-h-light/12-h-dark photoperiod. The photograph was taken 8 weeks after germination.
(B) FLC transcripts in 5-week-old plants of the wild type (lane 1), cdkc;2 (lane 2), cyct1;5 (lane 3), cdkc;2 cyct1;5 (lane 4), cdkc;2/CDKC;1 RNAi (lane 5), and cyct1;5/CYCT1;4 RNAi (lane 6) mutants grown under a 12-h-light/12-h-dark photoperiod.
(C) Siliques (top panel) and flower buds (bottom panel) of wild-type, rdr6-11, cdkc;2-1, and rdr6 cdkc;2 mutant plants.
(D) GUS activities in flower buds of stably transgenic Arabidopsis plants expressing CDKC;1:GUS (left) or CDKC;2:GUS (right). These images are representative results of multiple flowers buds examined from five independent transgenic lines for each construct.