Hasat Öncesi 24-Epibrassinolid (24-eBL) Uygulamalarının Alphonse Lavallée ve Horoz Karası Üzüm Çeşitlerinde Alfa, Beta, Gama, Delta Tokoferol Birikimleri Üzerine Etkileri

Year 2018, Volume: 47 Issue: (Özel Sayı 1) Türkiye 9. Bağcılık ve Teknolojileri Sempozyumu, 651 - 658, 28.06.2018

Zehra Babalık , Tunhan Demirci , Özlem Aras Aşcı , Nilgün Göktürk Baydar

Abstract

Sofralık, kurutmalık ve şaraplık-şıralık olmak üzere farklı şekillerde değerlendirilen üzümün, besin değerini ve antioksidan madde içeriğini zenginleştirmek amacıyla yetiştiricilikte çok farklı uygulamalar yapılabilmekte ve bu uygulamaların başında da büyümeyi düzenleyici madde kullanımları gelmektedir. Bu araştırma Alphonse Lavallée ve Horoz Karası üzüm çeşitlerine ait omcalara hasat öncesi yapılan brassinosteroid uygulamalarının gerek besin değeri gerekse antioksidan etkileri bakımından çok değerli bileşikler arasında yer alan α, β, γ ve δ-tokoferol birikimleri üzerine olan etkilerini belirlemek amacıyla gerçekleştirilmiştir. Bu amaçla yeni nesil hormonlar arasında yer alan brassinosteroidlerin bir analoğu olan 24-eBL, omcalara dört farklı konsantrasyon (0.2, 0.4, 0.6 ve 0.8 ppm) ve üç farklı uygulama dönemini (ben düşme dönemi; tane tutumundan 7 gün sonra +ben düşme dönemi; ile tane tutumundan 7 gün sonra + ben düşme dönemi + ben düşmeden 30 gün sonra) içeren kontrolle birlikte 13 uygulama şeklinde yapılmıştır. İki yıl süreyle yapılan uygulamalar sonucunda en yüksek α, γ ve δ-tokoferol miktarlarının Horoz Karası omcalarına ben düşme döneminde yapılan 0.8 ppm 24-eBL uygulamasından elde edildiği tespit edilmiştir. En yüksek β-tokoferol miktarının ise 1. yıl Alphonse Lavallée üzüm çeşidinde tane tutumundan 7 gün sonra + ben düşme döneminde yapılan 0.4 ppm 24-eBL uygulamasından, 2. yıl ise Horoz Karası üzüm çeşidinde ise ben düşme döneminde yapılan 0.6 ppm 24-eBL uygulamasından elde edildiği belirlenmiştir.

Keywords

Alphonse Lavallée , Horoz Karası , 24-eBL , tokoferoller

The Effects of Preharvest 24-Epibrassinolid (24-eBL) Applications on The Accumulation of Alpha, Beta, Gamma, Delta Tocopherols in Alphonse Lavallée and Horoz Karası Grape Cultivars

Abstract

Many different applications can be made in cultivation in order to enrich the nutrient and antioxidant contents of grapes evaluated in different forms such as table, raisin, wine and must. The most important treatments in grape growing for this purpose are the uses of plant growth regulators. This study was carried out to determine the effects of preharvest brassinosteroid applications on the accumulation of α, β, γ and δ-tocopherol, among the most valuable compounds in terms of nutrient value and antioxidant effects, in Alphonse Lavallée and Horoz Karası grape cultivars. For this purpose, 13 different treatments including control, four different concentrations (0.2, 0.4, 0.6 and 0.8 ppm) of 24-eBL as an analogue of brassinosteroids among the new generation of hormones, and three different application periods (veraison, 7 days after berry set + veraison, 7 days after berry set+veraison+30 days after veraison) were applied to vines. As a result of the applications performed for two years, the highest amounts of α, γ and δ-tocopherol were obtained from Horoz Karası applied with 0.8 ppm of 24-eBL at veraison. The highest amount of β-tocopherol was found in Alphonse Lavallée applied with 0.4 ppm 24-eBL at 7 days after berry set + veraison and in Horoz Karası applied with 0.6 ppm 24-eBL at veraison.

Keywords

Alphonse Lavallée , Horoz Karası , 24-eBL , tocopherols

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