Considering the total number of investigations concerned with gibberellic acid those dealing with fruits are relatively few (1-13). Gibberellic acid (GA) is capable of inducing parthenocarpy (1, 3, 5, 6, 7, 13), but whether or not fruit setting is increased at the same time is not known (4,6, 12). Several investigators found no increase in fruit size with GA treatment (4, 6, 10), but investigat...

A protocol to produce transgenic shoots of Malus X domestica cv Greensleaves was optimized using two gene constructs previously used create parthenocarpic tomato, Ino-IaaM and DefH9-IaaM. The aim obtain sufficient nº for in vitro multiplication, transfer soil, grafting testing parthenocarpy the next years. We investigated effects modifications a previous published protocol: 1) co-transformation...

VERY small tomato plant occurred in F1 from diploid dwarf dldl A parents, grown in the field at Riverside, California, for a study of male sterility. The mutant was very slow-growing, compared with normal sibs, but was perfectly developed and apparently healthy. It had extremely short internodes and very small leaves (fig. I). It flowered freely and produced very small yellow (ry) fruit in abun...