Figure 1.

Effect of reproduction on maternal growth in Arabidopsis. A, Sterile (Ler ap3-1/ap3-1) and fertile (Ler wild type) plants grown under identical conditions eventually exhibit different branching patterns and ovary numbers (as described by Hensel et al. [1994]). B, The numbers of mature ovaries produced on the main inflorescence of sterile (ms1-1/ms1-1) and fertile (wild-type segregants from the same family) plants produced over time. Flower production rates were taken from the day of anthesis of the first flower of an individual. The proliferative activity of sterile plants had not stopped by the end of the time course shown here. C, An arrested inflorescence of a fertile plant showing a cluster of flower buds that have ceased development. D, A growth-arrested inflorescence of a sterile plant. The last few flowers exhibit homeotic transformations of organs, and the inflorescence apex has terminally differentiated into a flower-like structure.