Exogenous of 28-Homobrassinolide and Salicylic acid Treatments to Improve Fruit Quality and Photosynthesis of Table Grapes (Vitis vinifera L.) cv. Crimson Seedless.

Abstract

Our study was performed on 6 years old own rooted "Crimson" seedless grapevines during 2023 and 2024 respectively. Sixteen vines uniformly were selected and sprayed two times during the pre-harvest at ten days before veraison stage and at 15 – 20 % coloration. By following treatments: water as (the control), Salicylic acid (SA) at (75 ppm), 28-Homobrassinolide (28-BR) at (0.4 ppm) and Salicylic acid (SA) at (75 ppm) combined with 28-Homobrassinolide (28-BR) at (0.4 ppm). The results indicated that treatment of Salicylic acid (SA) at (75 ppm) combined with 28-Homobrassinolide (28-BR) at (0.4 ppm) Resulted in a significant increase in concentrations of anthocyanin and carotene contents. Moreover, total soluble solid and total soluble solid / acidity (Brix) where shown with high concentration and lowest concentration of Chlorophyll a, b and acidity in "Crimson" grape fruits with the same treatment as compared with the control in both seasons. The same treatments resulted in a significant increase in concentrations of Chlorophyll a, b, (a+b) and Total carbohydrates in "Crimson" grape leaves as compared with the control in both seasons. In general, the use of Salicylic acid (SA) at (75 ppm) combined with 28-Homobrassinolide (28-BR) at (0.4 ppm) two times improved quality of "Crimson" seedless fruits and photosynthesis.

Keywords

• Salicylic acid
• 28-Homobrassinolide
• Photosynthesis
• Fruit Quality

Meyve Kalitesini ve Fotosentezi Artırmak İçin Ekzojen 28-Homobrassinolid ve Salisilik Asit Uygulamaları Sofralık Üzüm (Vitis vinifera L.) cv. Kızıl Çekirdeksiz

Öz

Çalışmamız 6 yaşında kendi köklü "Kızıl" çekirdeksiz asmalarda sırasıyla 2023 ve 2024 yıllarında yürütülmüştür. On altı asma üniform olarak seçilmiş ve ben düşme aşamasından on gün önce hasat öncesi ve % 15 – 20 renklenmede iki kez ilaçlanmıştır. Aşağıdaki işlemlerle: su (kontrol), Salisilik asit (SA), (75 ppm), 28-Homobrassinolit (28-BR), (0,4 ppm) ve Salisilik asit (SA), (75 ppm), 28-Homobrassinolit (28-BR) ile (0,4 ppm) birleştirildi. Sonuçlar, Salisilik asitin (SA) (75 ppm) 28-Homobrassinolit (28-BR) ile (0.4 ppm) birleştirilmesinin, antosiyanin ve karoten içeriklerinin konsantrasyonlarında önemli bir artışla sonuçlandığını gösterdi. Ayrıca, her iki mevsimde de kontrol ile karşılaştırıldığında aynı uygulama uygulanan "Kızıl" üzüm meyvelerinde toplam çözünür katı ve toplam çözünür katı/asitlik (Brix), yüksek konsantrasyonda ve en düşük Klorofil a, b konsantrasyonu ve asitlik ile gösterilmiştir. Aynı uygulamalar, her iki mevsimde de kontrole kıyasla "Kızıl" üzüm yapraklarında Klorofil a, b, (a+b) ve Toplam karbonhidrat konsantrasyonlarında önemli bir artışla sonuçlandı. Genel olarak, (75 ppm) Salisilik asit (SA) ile (0.4 ppm) 28-Homobrassinolit (28-BR) kombinasyonunun kullanımı, "Kızıl" çekirdeksiz meyvelerin ve fotosentezin kalitesini iki kat artırdı.

Anahtar Kelimeler

• Salisilik asit
• 28-Homobrassinolit
• Fotosentez
• Meyve Kalitesi

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