The Effect of Aminoethoxyvinylglycine (AVG) and Napthalene Acetic Acid (NAA) on the Preharvest Drop and Fruit Quality in Monreo Peach Variety

Abstract

This study was carried out to increase the fruit quality and reduce preharvest drop of Monreo peach

variety. For this purpose, 150 and 225 mg L–1 aminoethoxyvinylglycine [(AVG) (4 weeks before the anticipated

harvest date)] with 10 and 20 mg L–1 napthalene acetic acid [(NAA), 2 weeks before the anticipated harvest

date] were sprayed to the trial trees. In the study, pre-harvest drop and some fruit quality parameters [soluble

solids content (SSC, %), pH, fruit flesh firmness (kg), titratable acidity (TA, g malic acid 100 mL-1) and fruit

color characteristics (L*, C*, h°)] were determined. AVG treatments was found to be different in significant level

(P<0.05) than NAA treatments and control with respect to reducing pre-harvest drop at the anticipated harvest date.

AVG and NAA positively affected the SSC of fruit. In general, the pH was reduced towards the anticipated harvest

date. The flesh firmness was linearly reduced towards the anticipated harvest date, but it was positively affected by

increasing AVG doses

Keywords

• Color characteristics,fruit flesh firmness,plant growth regulator,Prunus persica L.,ReTain

‘Monreo’ Şeftali Çeşidinde Aminoetoksivinilglisin (AVG) ve Naftalen Asetik Asit’in (NAA) Hasat Önü Dökümü ve Meyve Kalitesi Üzerine Etkileri

Abstract

Bu çalışma Monreo şeftali çeşidinin hasat önü dökümünü azaltmak ve meyve kalitesini artırmak amacıyla

yürütülmüştür. Bu amaçla tahmini hasat tarihinden 4 hafta önce 150 ve 225 mg L–1 aminoetoksivinilglisin, 2 hafta

önce ise 10 ve 20 mg L–1 naftalen asetik asit, deneme ağaçlarına püskürtülmüştür. Çalışmada, hasat önü dökümü

(%) ve bazı meyve kalite özellikleri [suda çözünebilir kuru madde (SÇKM, %), pH, meyve eti sertliği (kg), titre

edilebilir asitlik (TA, g malik asit 100 mL-1), meyve rengi özellikleri (L*, Kroma, hue°)] belirlenmiştir. Tahmini

hasat tarihinde AVG uygulamaları dökümü azaltmada kontrol ve NAA uygulamalarına göre önemli düzeyde

(P<0.05) farklı bulunmuştur. AVG ve NAA uygulamaları meyvenin SÇKM içeriğini pozitif yönde etkilemiştir.

Genel olarak pH değeri tahmini hasada doğru azalış göstermiştir. Tahmini hasada doğru et sertliğinde doğrusal bir

azalış tespit edilmiş, ancak AVG’nin artan dozları et sertliğini pozitif yönde etkilemiştir.

Keywords

• Gelişim düzenleyici,meyve eti sertliği,Prunus persica L.,renk özellikleri,ReTain

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