Figure 4.

Expression of chicory 1-FEH genes. A, Northern blot containing RNA from a 7-week-old chicory root, a 7-week-old chicory leaf, a mature chicory root after 1 week of cold storage, and a forced chicory root after 3 weeks of forcing. B, Northern blot containing RNA from mature field-grown chicory roots between September 10 and November 5 and subsequent storage for 3 weeks in cold room (arrow indicates start of storage). Sampling dates are presented on the figure. C, Northern blot containing 10 μg RNA from the roots of control and defoliated young plantlets. Chicory root 1-FEH I, IIa, and 18S rRNA were used as probes.