Figure 7.

Reduced responsiveness to GA₃ of unfertilized pistils of ovule-deficient mutants. Pistils of cer6-2 (in Ler) and severe ovule-defective mutants bel1-1, sin2-1, and ant-4 were treated at anthesis with GA₃. Pistil or fruit length was measured 10 d after GA₃ treatment. Data represent the percentage of parthenocarpic growth (final size of GA-treated divided by final size of nontreated pistils), being 100% data from cer6-2. Data are mean ± sd of at least 25 pistils per age. The experiment was repeated three times.