Grafting onto Different Rootstocks Modulates Fruit Quality in Eggplant Under Salt Stress

Year 2025, Volume: 14 Issue: 1, 93 - 106

Emine Polat , Naif Geboloğlu

Abstract

Grafting has emerged as an effective agronomic strategy in eggplant cultivation to mitigate the adverse effects of salt stress—a major abiotic factor limiting yield and quality. In this study, the effects of grafting onto different rootstocks on fruit quality traits under salt stress were investigated. The experiment was conducted in 2024 in a soilless greenhouse equipped with automated irrigation and fertilization systems. Eight rootstocks (AG38R F₁, AGR 703 F₁, Boğaç F₁, Kingkong F₁, Hercules, Hikyaku F₁, Yula F₁, and Hawk) were used, with the commercial cultivar Anamur RZ F₁ as the scion. Non-grafted and self-grafted Anamur RZ F₁ plants served as controls. Plants were grown in a peat-perlite substrate and subjected to 0, 25, and 50 mM NaCl treatments. A modified Hoagland nutrient solution was used, and fruit quality traits were analyzed.The parameters evaluated included soluble solids content (SSC), pH, electrical conductivity (EC), titratable acidity (TA), fruit firmness, and fruit skin color (L*, Chroma, Hue°). Salt stress generally increased SSC, EC, TA, and fruit firmness, while pH and color parameters varied depending on rootstock. AG38R F₁ and Hawk showed high SSC and pH values; Hercules and Hawk were effective in reducing EC and limiting ionic accumulation. Hikyaku F₁ had the highest fruit firmness. Hawk and Hercules enhanced skin brightness under salt stress. TA levels increased in response to salinity. Overall, the negative effects of salt stress were significantly mitigated through proper rootstock selection, and fruit quality was preserved. Certain rootstocks proved effective in improving physiological and quality performance under high salinity conditions.–

Keywords

Solanum melongena , salt stress , fruit color , fruit quality , rootstock

Tuz Stresi Altında Patlıcanda Farklı Anaçlara Aşılamanın Meyve Kalitesi Üzerine Etkisi

Abstract

Patlıcan yetiştiriciliğinde önemli stres faktörlerinden biri olan tuz stresine karşı aşılama özellikle uygun anaç-kalem kombinasyonları kullanılarak, bitki gelişimi ve meyve kalitesi üzerinde olumlu etkiler sağlayan etkili bir tarımsal strateji olarak öne çıkmaktadır. Bu maksatla yürütülen çalışmada farklı anaçlar üzerine aşılamanın patlıcan meyvelerinde kalite üzerine etkileri araştırılmıştır. Çalışma, 2024 yılında sulama ve gübreleme otomasyonuna sahip topraksız tarım serasında yürütülmüştür. Çalışmada, sekiz farklı patlıcan anacı (AG38R F₁, AGR 703 F₁, Boğaç F₁, Kingkong F₁, Hercules, Hikyaku F₁, Yula F₁ ve Hawk) kullanılmış, ticari çeşit olarak Anamur RZ F₁ tercih edilmiştir. Aşısız ve kendi üzerine aşılı Anamur RZ F₁ bitkileri kontrol olarak kullanılmıştır. Bitkiler, torf-perlit karışımında yetiştirilmiş, 0, 25 ve 50 mM NaCl seviyelerinde tuz stresi uygulanmıştır. Bitkiler modifiye Hoagland solüsyonu ile sulanmış ve meyvelerde kalite analizleri gerçekleştirilmiştir. Araştırmada; suda çözünür kuru madde (SÇKM), pH, elektriksel iletkenlik (EC), titre edilebilir asitlik (TA), meyve eti sertliği ve meyve kabuk rengi (L*, Chroma, Hue°) parametreleri incelenmiştir. Tuz stresi genel olarak SÇKM, EC, TA ve meyve sertliği üzerinde artırıcı etki yaparken, pH ve renk parametrelerinde anaçlara bağlı değişimler gözlenmiştir. AG38R F₁ ve Hawk, yüksek SÇKM ve pH değerleriyle öne çıkarken, Hercules ve Hawk düşük EC değerleriyle iyon birikimini azaltmada etkili olmuştur. En yüksek meyve eti sertliği Hikyaku F₁ anacında ölçülmüştür. Hawk ve Hercules anaçları meyve kabuk renginde açıklığı artırmıştır. TA değerleri tuzla birlikte artış göstermiştir. Sonuç olarak, tuz stresinin olumsuz etkileri anaç seçimiyle önemli ölçüde azaltılmış ve meyve kalitesi korunmuştur. Uygun anaçlar, özellikle yüksek tuz koşullarında bitkilerin fizyolojik ve kalite performansını iyileştirmede etkili olmuştur.

Keywords

Solanum melongena , tuz stresi , meyve rengi , meyve kalitesi , anaç

Ethical Statement

Bu çalışma kapsamında etik kurul onayı gerektiren bir durum bulunmamaktadır. Araştırma, bilimsel ve etik kurallara uygun şekilde yürütülmüştür. Herhangi bir çıkar çatışması söz konusu değildir.

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