EFFECT OF GIBBERELLIN APPLICATION FOR SEEDLESS GRAPE VARIETIES OF AZES BREEDING
The article presents the results of the influence of gibberellin seedless varieties of table grapes of AZOS breeding - Lotus (early ripening); Zhemchug Anapa and Kishmish Rozovy AZOS (medium ripeining). Brief information is given how gibberellins are intensively used in viticulture, which affect the growth, development and productivity of plants, as well as the quality of seedless grape varieties. Data of phenological observations, the dynamics of generative organs growth on the phases of growth and development, the daily growth of a grape plant at different periods of development, taking into account the dose of gibberellin and the multiplicity of treatments. The effect of gibberellin on the appearance of bunches was established, the pattern according to the experimental variants was noted to increase in the color intensity with increasing the dose of gibberellin for the varieties of Lotus and Kishmish Rozovy AZOS. The same can be said about the berries shape of these varieties, with an increase in the dose of the drug, the berries were oblong. A direct effect of treatments on the sparseness of future bunches was revealed, this was especially manifested in the Lotus variety. The study tested 8 options of gibberellin using and 3 multiplicity treatments. The optimal concentration of the preparation and the multiplicity of treatments, using the method of dipping, for seedless table grape varieties breeding of AZOS are: for Lotus GK 1 ml / l of water three times (first treatment with GK 0.25 ml), Kishmish Rozovy AZOS - GK 1 ml per liter of water twice, Zhemchug Anapa - GK 0.25 ml / l of water three times, which increases in the potential yield of bushes to 16.2-46 %.