Abstract
In contrast to a complete absence of endocarp tissue in achenes from parthenocarpic syconia induced with gamma-(indole-3)-n-butyric acid and the presence of unsclerified endocarp tissue in achenes from syconia induced with p_chlorophenoxyacetic acid, this tissue is completely sclerified in achenes from syconia induced with benzothiazol-2_oxyacetic acid. With the exception of differences in color of the pulp and lack of embryos in achenes from parthenocarpic syconia induced with benzothiazol-2-oxyacetic acid, the latter could not be distinguished from syconia that had been caprified (pollinated).