Effect of kinins on fruit set and development in Vitis vinifera

Robert J. Weaver, J. van Overbeek and Robert M. Pool

Hilgardia, 1966, vol. 37, issue 7

Abstract: Experiments were performed in 1963 and in 1964 on four varieties of Vitis vinifera to determine the responses to the kinins, BTP (6-(benzylamino)-9-(2-tetrahydropyranyl)-9H-purine) and BA (benzyladenine). Both kinins were effective in increasing fruit numbers, and in some instances fruit growth. BTP was more effective than BA. BTP applied to Black Corinth clusters at bloom produced berries three to four times larger than the controls, and the pedicels were much thickened. Black Corinth was treated at bloom with BTP, gibberellin, and/or an auxin, 4-CPA. Gibberellin alone and a mixture of all three compounds produced the largest berries. Berries were elongated as a result of the gibberellin. 4-CPA and BTP produced about equally sized, almost round berries. Treatment of the apical half of Black Corinth clusters at bloom with BTP at 1,000 ppm enlarged only the treated berries. Treatment of the basal portion resulted in some movement towards the apical portion.

Keywords: Crop; Production/Industries (search for similar items in EconPapers)
Date: 1966
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