Figure 4. Phenotypic analysis of various tic22 single- and double-mutant plants.

A, B. Homozygous plants of the indicated genotypes were grown side-by-side, in vitro, for five days (A), or for 14 days prior to transferral to soil and growth for an additional 10 days (B). Representative plants are shown. C. Chlorophyll concentrations in 5, 7, 10 and 24-day-old plants of the indicated genotypes are shown. The plants were grown in vitro or on soil as described in A, under identical conditions. Values shown are means (±SE) derived from measurements of 12–24 different samples in each case. Units are nmol chlorophyll a+b per mg fresh weight, but the data have been normalized to the wild-type value at each developmental time-point.