Different Leaf Water Potentials (Ψleaf) and Cluster Thinning Applications Effects on Phytochemical Properties in cv. Sangiovese

Abstract

This study was conducted in order to determine the effects of leaf water potential and cluster thinning

applications on phytochemical properties of cv. Sangiovese. Four different leaf water potential (Ψleaf) applications;

(Control (Non irrigated) (<0.7MPa), Ψpd nЄ (-0.3;-0.5] MPa, Ψpd nЄ (-0.3;-0.6] MPa, Ψpd nЄ (-0.3;-0.7] MPa)

and two different cluster thinning applications; (non cluster thinning and 50% cluster thinning) were made. In this

research, it was determined that the application of Ψpd nЄ (-0.3;-0.7 MPa) improves the phytochemical properties

more than control treatment. Cluster thinning applications had an insignificant effect on leaf water potentials,

whereas %50 Cluster Thinning application had an positive effect on the quality. As a result, Ψpd nЄ(-0.3;-0.7] MPa

interval leaf water potential application and when the excessive yield existing, %50 Cluster Thinning could be

recomended for the cv. Sangiovese.

Keywords

• Cluster thinning,Grape phytochemical characteristics,leaf water potential,sangiovese,water stress

Farklı Yaprak Su Potansiyeli (Ψyaprak) ve Salkım Seyreltme Uygulamalarının Sangiovese Üzüm Çeşidinin Fitokimyasal Özellikleri Üzerine Etkileri

Abstract

Bu çalışma yaprak su potansiyeli ve salkım seyreltme uygulamalarının Sangiovese üzüm çeşidinin

fitokimyasal özellikler üzerine etkilerini belirlemek amacıyla yürütülmüştür. Denemede 4 farklı yaprak

su potansiyeli (Ψyaprak) uygulaması; Kontrol (Sulamasız) (<0.7MPa), Ψşö nЄ(-0.3;-0.5MPa], Ψşö nЄ(-0.3;-0.6MPa] ve

Ψşö nЄ(-0.3;-0.7MPa] ve 2 farklı Salkım Seyreltme Uygulaması; (Salkım Seyreltmesiz ve %50 Salkım Seyreltme)

yapılmıştır. Araştırmada Ψşö nЄ(-0.3;-0.7MPa] uygulamasının Kontrol’e göre fitokimyasal özellikleri iyileştirdiği

saptanmıştır. Salkım seyreltme uygulamalarının yaprak su potansiyeli üzerinde farkedilir bir etkisi görülmemiş

ancak %50 Salkım Seyreltme uygulamasının kaliteyi artırıcı etkide bulunduğu belirlenmiştir. Sonuç olarak

Sangiovese üzüm çeşidi için yaprak su potansiyeli uygulamalarından Ψşö nЄ(-0.3;-0.7MPa] aralığı ile birlikte ürün

yükünün fazla olması durumunda %50 Salkım Seyreltme uygulaması önerilmiştir.

Keywords

• Fitokimyasal özellikler,salkım seyreltme,sangiovese,su stresi,yaprak su potansiyeli

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