The Effects of Synthetic Biostimulants Applied During Seedling Development of Istanbul Oregano (Origanum vulgare L. ssp. hirtum) on Growth and Biochemical Parameters

Abstract

This research was conducted to determine the effects of foliar applications of IAA, IBA, and BAP hormones at 50 ppm and 100 ppm doses on growth parameters and some biochemical parameters during the seedling development period of Istanbul oregano (Origanum vulgare L. ssp. hirtum). The experiment was carried out under greenhouse conditions using a "Single Factor Completely Randomized Parcels" experimental design with three replications. In the study, seedling and root lengths, seedling and root fresh and dry weights, total phenolic content, and antioxidant activity (CUPRAC and FRAP) parameters were investigated. As a result of the study, it was determined that all hormones increased growth values compared to the control, and the 100 ppm dose of BAP hormone gave the highest values in all growth parameters except root length, while the highest value in root length was achieved with the 50 ppm dose of IAA hormone. The highest total phenolic content was reached with the 50 ppm application of IBA hormone, the highest value according to the CUPRAC antioxidant activity method was obtained from the 50 ppm application of BAP hormone, and according to the FRAP antioxidant activity method, the highest value was determined from the control applications.

Keywords

• Antioxidant
• Biostimulant
• Origanum
• Seedling Development
• Total Phenolic Content

İstanbul Kekiği (Origanum vulgare L. ssp. hirtum) Bitkisinin Fide Gelişim Döneminde Uygulanan Sentetik Biyostimülantların’ın Büyüme ve Biyokimyasal Parametreler Üzerine Etkileri

Abstract

Bu araştırma İstanbul kekiği (Origanum vulgare L. ssp. hirtum) bitkisinin fide gelişim döneminde IAA, IBA ve BAP hormonlarının 50 ppm ve 100 ppm dozlarının yapraktan uygulamalarının büyüme parametreleri ile bazı biyokimyasal parametreler üzerine etkilerini belirlemek amacıyla yürütülmüştür. Deneme ‘‘Tek Faktörlü Tam Şansa Bağlı Parseller’’ deneme desenine göre 3 tekerrürlü olarak sera koşullarında yürütülmüştür. Çalışmada; fide ve kök uzunlukları, fide ve kök yaş ağırlıkları, fide ve kök kuru ağırlıkları, toplam fenolik madde miktarı ve antioksidan aktivite (CUPRAC ve FRAP) parametreleri incelenmiştir. Çalışma sonucunda; tüm hormonların kontrole göre büyüme değerlerini arttırdığı, BAP hormonunun 100 ppm dozunun kök uzunluğu dışındaki tüm büyüme parametrelerinde en yüksek değerleri verdiğini, kök uzunluğunda ise en yüksek değere IAA hormonunun 50 ppm’lik dozunda ulaşıldığı tespit edilmiştir. En yüksek toplam fenolik madde miktarına IBA hormonunun 50 ppm uygulamasından ulaşıldığı, CUPRAC antioksidan aktivite yöntemine göre en yüksek değer BAP hormonunun 50 ppm uygulamasından, FRAP antioksidan aktivite yöntemine göre ise en yüksek değer kontrol uygulamalarından tespit edilmiştir.

Keywords

• Antioksidan
• Biyostimülan
• Fide Gelişim
• İstanbul kekiği
• Origanum
• Toplam Fenolik Madde

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