Effect of gibberellic acid, B-nine and kinetin on fruit set, parthenocarpy and quality of kyoho grapes

1971 Engei Gakkai zasshi  
Healthy vines of Kyoho grapes were selected at the experimental orchard of the Chiba University for the study of effect of gibberellic acid (GA3 and GA4+7) and kinetin on fruit set, parthenocarpy and quality, and B-nine on vegetative growth, fruit set, yield and quality. GA3 at 50 ppm, GA4+7 at 50, 75, and Kinetin at 5, 10, and 20 ppm concentration were applied by dipping the clusters before four days of anthesis and B-nine at 0.5 per cent was applied by spraying at seven node stage of new
more » ... s. Kinetin treatment was completely a failure as all the bunches died after cap fall. Among the GA treatments all the concentrations induced parthenocarpy and increased the yield significantly by increasing the fruit set. However, most effective treatments were GA3 at 50 ppm, GA4+7 at 75 ppm and 100 ppm. Their effects on quality were detrimental as they neither
doi:10.2503/jjshs.40.105 fatcat:gjiumqxxrrh2nhvq3y24t2t7oi