Braeburn Elmasının (Malus domestica Borkh.) Hasat Önü Dökümü ve Meyve Kalitesi Üzerine Hasat Öncesi Bitki Gelişim Düzenleyici Uygulamalarının Etkisi

Year 2015, Volume: 32 Issue: 1, 68 - 76, 20.03.2015

Burhan Öztürk Yakup Özkan Kemal Kılıç Mutlu Uçar Orhan Karakaya Medeni Karakaya

https://doi.org/10.13002/jafag808

Cited By: 6

Abstract

Bu çalışmada, hasat öncesi uygulanan naftalen asetik asit (NAA) ve aminoetoksivinilglisin (AVG) uygulamalarının, Braeburn elmasının meyve kalitesi ve hasat önü dökümü üzerine etkileri incelenmiştir. Deneme ağaçları, tahmini hasattan 4 hafta önce 20 mg L-1 NAA ve 150, 225 ve 300 mg L-1 olmak üzere 3 (üç) farklı miktarda AVG konsantrasyonu ile muamele edilmiştir. Elde edilen sonuçlar kontrol ile karşılaştırıldığında, NAA ve AVG uygulamalarının hasat önü dökümünü önemli miktarda azalttığı ortaya konmuştur. Meyve renk gelişimi, AVG uygulamaları ile önemli derecede geciktirilmiştir. 225 ve 300 mg L-1 AVG uygulama konsantrasyonlarının 1, 8 ve 15 Ekim tarihlerinde yapılan hasatta meyve ağırlığını önemli derecede azalttığı tespit edilmiştir. AVG uygulamaları meyve eti sertliğinin korunmasında daha etkili olmuştur. Fakat NAA uygulaması tahmini hasat tarihinde hem meyve eti sertliğini, hem de kopma direncini önemli derecede azaltmıştır. AVG uygulamaları nişasta parçalanmasını önemli derecede geciktirmiş ve suda çözünür kuru madde miktarını azaltmıştır. AVG’nin 225 ve 300 mg L-1 konsantrasyonu ile muamele olmuş meyveler 1, 8 ve 15 Ekim tarihinde kontrol ve NAA uygulamalarından daha yüksek titre edilebilir asitlik içeriğine sahip olduğu tespit edilmiştir.

Keywords

Aminoetoksivinilglisin, meyve eti sertliği, kopma direnci, nişasta indeksi, renk.

The effects of pre-harvest plant growth regulators treatments on pre-harvest drop and fruit quality of Braeburn apple (Malus domestica Borkh.)

Abstract

In this study, effects of pre-harvest applied aminoethoxyvinylglycine (AVG) and napthaleneacetic acid (NAA) treatments on the pre-harvest drop and fruit quality of ‘Braeburn’ apple were investigated. Experimental trees were treated with three different concentrations (150, 225 and 300 mg L-1) of AVG and 20 mg L-1 NAA 4 weeks before anticipated harvest date. Results which were obtained revealed that NAA and AVG treatments significantly decreased pre-harvest drops compared to control treatment. AVG treatments significantly delayed peel color development. The fruit weight was significantly reduced by 225 and 300 mg L-1 AVG concentration at 1, 8 and 15 October harvest date. AVG treatments were more effective in retaining of flesh firmness. But NAA treatment significantly reduced both flesh firmness and fruit removal force at anticipated harvest. AVG treatments significantly delayed starch degradation, and reduced soluble solids content. 225 and 300 mg L-1 AVG-treated fruits exhibited higher titratable acidity than control and NAA on 1, 8 and 15 October.

Keywords

Aminoethoxyvinylglycine, color, fruit flesh firmness, removal force, starch index

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