Figure 3.

Homozygous cob-4 Plants Have a Severe Growth Defect.

(A) Length measurements of the conditional cob-1 and null cob-4 alleles under different growth conditions. Data for cob-1, cob-4, and wild-type plants grown under restrictive conditions are shown. P and R, permissive and restrictive conditions, respectively. Each bar represents the average ± sd of 15 seedlings.

(B) Reduced hypocotyl elongation in cob and qui-1 mutants as well as in the cob-1 qui-1 double mutant. Hypocotyl lengths of 7-d-old dark-grown seedlings under permissive condition are shown. Each bar represents the average ± sd of 15 hypocotyls.

Photographs of the relevant wild-type and mutant seedlings are shown below the bar graphs.