Paclobutrazol’un Fuji Elma Çeşidinde Verim ve Meyve Kalitesi Üzerine Etkisi

Öz

Bu çalışmanın amacını, Paclobutrazol (PBZ)’un Fuji elma çeşidinde verim ve meyve kalitesi üzerine etkisinin belirlenmesi oluşturmaktadır. Çalışmada 10, 20 ve 40 ppm PBZ ile kontrol olmak üzere 4 uygulama yer almıştır. PBZ uygulamaları, taç yapraklar döküldükten hemen sonra ve 1. uygulamadan 25 gün sonra olmak üzere iki kez yapılmıştır. PBZ uygulamaları verimi etkilememekle birlikte en düşük verim 20 ppm PBZ uygulamasında elde edilmiştir. Meyve ağırlığı ve meyve eni 40 ppm PBZ dozunda, meyve boyu ise 20 ppm ve 40 ppm uygulamalarında önemli derecede azalış göstermiştir. PBZ dozları, meyve eti sertliği (N), titre edilebilir asitlik (%) ve suda çözünebilir kuru madde (%) oranını kontrole göre arttırmıştır. Meyve eti sertliği ve titre edilebilir asitlik oranı için en yüksek değerler 20 ppm uygulamasında, SÇKM miktarı ise 40 ppm uygulamasında elde edilmiştir. PBZ uygulamalarının L* değeri üzerine etkisi önemsiz bulunurken, uygulamalar a* değerini arttırmış, b* değerini ise kontrol uygulamasına göre azaltmıştır. Sonuç olarak Fuji elma çeşidinde PBZ uygulamaları ile meyve kalite kriterlerinin arttığı söylenebilir. Kesin kanıya varmak adına uygulamaların yıl tekrarlamalı ve en uygun uygulama zamanını belirlemeye yönelik olarak yapılması gerekmektedir.

Anahtar Kelimeler

• Meyve kalitesi
• kabuk rengi
• Malus x domestica
• paclobutrazol

Effect of Paclobutrazol on Yield and Fruit Quality in Fuji Apple cv.

Öz

The aim of this study was to determine the effect of Paclobutrazol (PBZ) on the yield and fruit quality on the Fuji/MM106 apple. Four different treatments were performed in the study: 10, 20, 40 ppm and control. PBZ treatments were carried out twice, after petal fall and 25 days after the first treatment. The yield was lowest in the 20 ppm PBZ treatment, but the differences between treatments were insignificant. Fruit weight, fruit diameter, and fruit length were significantly decreased at 40 ppm PBZ. PBZ doses were increased fruit flesh firmness (N), titratable acidity (%) and soluble solids content (%) compared to control. The highest value for flesh firmness and titratable acidity were obtained at 20 ppm treatment, and the amount of total soluable solids at 40 ppm treatment. While the effect of PBZ treatments on the L* value was found to be insignificant, the treatments increased the a* value and decreased the b* value compared to the control. As a result, it can be said that fruit quality criteria increased with PBZ treatments in Fuji apple cultivar. In order to reach a definite conclusion, the treatments should be repeated for years and should be done to determine the most appropriate spray time.

Anahtar Kelimeler

• Fruit quality
• skin color
• Malus x domestica

Kaynakça

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