Effects of different hormone applications on phenological and pomological properties in some Raspberry (Rubus idaeus L.) species

Abstract

The purpose of this study conducted in a raspberry garden in Karaagac central village of Usak province in 2017and 2018 was to analyze the effects of phenological and pomological properties of different hormone applicationson Heritage and Tulameen raspberry species in the ecology of Usak province. Our experiment was established as3 replications with 10 plants in each replication. Hormones were applied as Giberallic acid (GA), Melatonin (Mel)and GA+Mel with 2 different doses (5 ppm and 10 ppm) and 2.5 ppm melatonin and 2.5 ppm GA mixture forGA+Mel 5 ppm and 5 ppm melatonin and 5 ppm GA mixture for GA+Mel 10 ppm twice before blooming and fruitset. When we analyze both species, we can see that blooming happens between 17th May and 18th June and theharvest is between 21st June and 12th September. In pomological measures, it was found that in both species fruitlength was between 8.89 and 13.13 mm, fruit width was 9.76 and 13.68 mm and fruit weight was between 0.64 and1.29 g. While pH is between 3.62 and 4.80 and SSC is between 9.27% and 13.82%, TEA is between 21.62% and30.56%. While Total Phenolic content (ppm/GAE) is between 3.91 and 5.33, Total Flavonoid content (ppm/QE) isbetween 0.75 and 1.42 and Antioxidant activity (IC50) is between 43.66 and 175.66, vitamin C (ppm) is between1009 and 2308.50 values. According to the results we obtained in our study, Mel 10 ppm application in Tulameencultivar in terms of pomological measurements and Heritage varieties in terms of chemical results and hormoneapplications in 5 ppm dose can be suggested in general terms.