Rafet ASLANTAŞ, Berna TURAK, Ersin GÜLSOY

MM106 Anacı Üzerine Aşılı Bazı Elma Çeşitlerinde Benziladenin ve Naftalen Asetik Asit Uygulamalarının Meyve Seyreltmesi ve Kalitesi Üzerine Etkisi

Meyve seyreltmesi, meyve büyüklüğü ve kalitesini iyileştirmek periyodisiteyi kontrol etmek ve sonraki yılın çiçek tomurcuğu oluşumunu arttırmak için yapılan önemli bir uygulamadır. Meyve seyreltmesi, elle veya bazı kimyasal maddeler kullanılarak yapılır. 2015 yılında yürütülen çalışmada MM 106 klon anacı üzerine aşılı Granny Smith, Golden Delicious ve Red Chief elma çeşitlerinde NAA’nın 5 ve 10 ppm’lik dozları ile BA’nin 100 ve 150 ppm’lik dozlarının meyve seyreltmesi ve bazı meyve kalite özellikleri üzerine etkisi araştırılmış ve elle seyreltme uygulamasıyla karşılaştırılmıştır. Elle seyreltme uygulaması Haziran dökümünden sonra her hüzmede ortada bir meyve kalacak şekilde yapılırken, kimyasal seyreltme uygulaması tam çiçeklenmeden 3 hafta sonra yapılmıştır. Çalışmada en yüksek seyreltme oranı Granny Smith çeşidinde sırasıyla NAA’nın 5 ppm’lik (%93.80) ve 10 ppm’lik (% 91.65), dozları ile BA’nin 100 ppm’lik (%89.88) ve 150 ppm’lik (% 88.98) dozlarından elde edilmiştir. Elde edilen sonuçlara göre NAA’nın 10 ppm’lik ve BA ‘nin 100 ve 150 ppm’lik uygulamaları etkili meyve seyreltmesi ve meyve kalitesi için önemli bulunmuştur. Ayrıca elle seyreltme uygulaması kimyasal uygulamalara göre meyve ağırlığını daha fazla arttırmıştır.

Effects of Benzyladenine and Naphthalene Acetic Acid Applications on Fruit Thinning and Quality of Some Apple Cultivars Grafted onto MM 106 Rootstocks

Fruit thinning is an essential practice to improve fruit size andquality, control alternate bearing and increase return bloom in thenext season. Fruit thinning is performed by hand or by using somechemicals. In this study, the effect of chemical thinning, namely twodoses of 5 and 10 ppm of Naphthalene Acetic Acid (NAA) or of 100 and150 ppm of Benzyladenine (BA) on fruit thinning and some fruitquality traits Golden Delicious, Red Chief and Granny Smith applecultivars grafted on MM 106 clone rootstock in 2015 was tested andcompared with the effect of hand thinning. Chemical treatment wasapplied after three weeks of full bloom, while the hand thinning wasmade to be released a fruit per cluster on each branch in small fruitperiod after June-drops. The results showed that the highest fruitthinning ratio was found in the Granny Smith cultivars, with 5 ppm(93.80%) and 10 ppm (91.65%) of NAA, 100 ppm (89.88%) and 150 ppm88.98%) of BA. It can be concluded that the applications of 10 ppm ofNAA and 100 and 150 ppm of BA were found effective for fruitthinning and fruit quality. Furthermore, the hand thinningapplication increased the fruit weights more than all the chemicalapplications.

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