Abstract
Abstract Vines of Vitis vinifera ‘Black Corinth’ were sprayed with 100 ppm gibberellin A3 (GA3), 50 ppm 4-chloro-phenoxyacetic acid (4-CPA), or 1000 ppm benzyladenine (BA) about 5 days after anthesis. The concentrations of protein, RNA, and DNA in the berries were measured at 0, 1, 6, 12, 24, 48, and 96 hr after treatment. In the fruits treated with GA3 or 4-CPA, protein, RNA, and DNA were markedly increased compared to untreated fruits during the first 24 hr after treatment; thereafter, concentrations did not significantly differ from those of the control berries. Fruits treated with BA, on the other hand, had significantly higher levels of these substances only at 1 and 6 hr post treatment.
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