Figure 4.

Levels of different BEAT and SAMT activities in different parts of the flower during the lifespan of the flowers. A, BEAT activity; and B, SAMT activity. For each data point, flowers from three different plants were combined for each assay, and two to three enzyme assays were conducted and the mean was obtained. se values for data points on d 1 of anthesis are given in Table I; se values for other time points are similar. ▪, Petals; ○, stigma; •, style; ▴, stamens; and □, sepals. pkat, Picomole of product per second.