دانلود رایگان مقاله انگلیسی تاثیر ملاتونین و کاربرد برگ جیبرلیک اسید در بازده و کیفیت گونه های توت سیاه جامبو - الزویر 2018

abstract

Not many chemical hormone studies does exist in our country especially in berry fruits. Foliar application of melatonin and gibberellic acid hormones was performed in 2016 and 2017 in order to analyze the effects of different doses of hormone applications on fruit quality and yield. Pheonologic, pomological and some bioactive content analyses of these hormones were studied. According to the research results, while M + GA10 ppm (240.50; 3.9) and M + GA 5 ppm (226.50; 3.6) applications have the highest fruit number and weight (g), the highest fruit size was obtained from GA 5 ppm (21.21 mm fruit length, 16.56 mm fruit width) and M 10 ppm (21.10 mm fruit length, 16.20 mm fruit width) chemical applications in Jumbo blackberry species. The highest values in Ph, soluble solid content (SSC) and titratable acidity averages were obtained from GA 5 ppm (3.69; 10.80; 2.42) and GA 10 ppm (3.68; 10.70; 2.40) applications; the highest total antioxidant activity in bioactive characteristics averages was found in G 10 ppm 143.21 mg/g, the highest total phenolics was identified in G 5 ppm 72.68 ppm/GAE and the highest total flavonoids was determined in G 10 ppm 4925.75 ppm/QE.

4. Conclusion

Blackberries are berry fruit species which gain importance gradually in our country and in the world. The studies to introduce the blackberry plant in cultivated plants, whose only wild species have been utilized for years, is an issue which has begun to be handled recently. Numerous adaptation experiments and studies on reclamation of species have been launched throughout the country and the increasing the production of blackberry plants has been the main goal of these studies. However, these efforts are not sufficient for quality products and high yield alone. The effects of various cultural activities such as pruning, irrigation, fertilization, fighting against diseases, cultivation systems applied in growing plant on quality and yield are known and the attempts on those segments have been going on for many years in many plant species. The recent introduction of blackberries into cultivated plants and the necessity of adaptation and breeding studies primarily have not yet allowed adequate research of other cultural practices. In this study on the jumbo blackberry species, the effects of the gibberellic acid and melatonin chemicals applied at different doses on fruit yield and quality were researched. This study is of great importance due to its being the first to investigate the effect of melatonin application through foils on the yield and quality of Jumbo blackberry species. These on-going studies will be very contributive to improve the conditions needed for the production and popularity of blackberry in the future.