الفهرس 
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Abstract
The present investigation entitled “Effect of Spraying Abscisic acid (ABA) and Ethylene on Yield and Fruit Quality of Flame Seedless and Red Globe Grapevines (Vitis vinifera L.)” was conducted during two successive seasons 2020 and 2021 at Samalout Distract, Al-Minia Governorate.
The aim of this study was examining the effect of spraying ethylene and ABA (each one at 100, 200, 300 and 400 ppm) on yield and berry physic–chemical characteristics of “Flame seedless” and “Red globe” grapevines under Al-Minia Governorate conditions.
This experiment included the following nine treatments: Control or untreated vines (sprayed with tap water), Spraying Ethylene at 100 ppm, Spraying Ethylene at 200 ppm, Spraying Ethylene at 300 ppm, Spraying Ethylene at 400 ppm, Spraying ABA at 100 ppm, Spraying ABA at 200 ppm, Spraying ABA at 300 ppm and Spraying ABA at 400 ppm.The ethylene were done at starting of the veraison stage (coloring 5% of berries), at coloring 50% of berries and at complete berries coloring. While, the ABA treatments were carried out three times; just after fruit setting, starting of veraison stage (coloring 5% of berries) and at complete berries coloring.
from the obtained results, it could be recommended by treated Flame seedless and Red globe cultivars with ethylene or ABA at 300 ppm three times yearly as a foliar application, in order to improve the yield (kg/tree) and its component as cluster numbers/vine and cluster weight (g) as well as berry physical and chemical properties in order to produce good yield with high-quality.