Akdenı̇z İklı̇mı̇nde Renk Bakımından Çı̇m Çeşı̇tlerı̇nı̇n Gı̇berellı̇k Ası̇de Tepkı̇sı

Öz

Öz: Bitki büyüme düzenleyicileri çim alan yönetiminde yaygın olarak kullanılmaktadır. Giberellik asit de bitki büyümesi ve gelişimi üzerindeki olumlu etkileri nedeniyle birçok bitkide uygulanmaktadır. Ancak, bazı çalışmalar bu uygulamaların renk üzerinde olumsuz bir etkiye sahip olabileceğini göstermiştir. Bu çalışma, farklı çim türlerinde farklı dozlarda giberellik asit uygulamalarının görsel ve renk kalitesi üzerindeki etkisini bulmayı amaçlamıştır. Giberellik asit kontrol, 0.05 ve 0.1 kg ha-1 olarak uygulanmıştır. Çim türleri arasında 4 farklı türün 20 farklı çeşidi denemede materyal olarak kullanılmıştır. Görsel kalite, görsel derecelendirme sistemi kullanılarak değerlendirilmiştir. Renk kalitesi spektrofotometre kullanılarak incelenmiştir. Genel olarak, giberellik asit kullanımının görsel kalite üzerinde olumsuz etkileri olduğu gözlenmiştir. Bu bitki büyüme düzenleyicisinin stres koşullarına karşı direnci artırdığını gösteren çalışmalar olmasına rağmen renk değerleri (L, a*, b*) açısından düşüşlere neden olduğu gözlenmiştir. Görsel kalite çim alanlar için çok önemlidir. Çalışma neticesinde ayrıca çim çeşitlerinin görsel kalite ve renk özellikleri bakımından giberellik aside farklı tepkiler verdiği gözlemlenmiştir.

Anahtar Kelimeler

• Renk
• Çim
• Bitki büyüme düzenleyicisi
• Çim kalitesi

Color Response of Turfgrass Cultivars to Gibberellic Acid under Mediterranean Climate Conditions

Abstract

Plant growth regulators (PGRs) are broadly used in turfgrass management. Gibberellic acid is also applied in many plants due to its positive effects on plant growth and development. However, some studies have indicated that these applications may have a negative effect on color. The study aimed to find out the effect of different doses of gibberellic acid applications on visual quality in different turfgrass species. Gibberellic acid was applied as control, 0.05 and 0.1 kg ha-1. Among the turfgrass species, twenty different cultivars of 4 different species were used as material in the experiment. Visual quality was assessed using a visual rating system. Color quality was examined using a spectrophotometer. In general, the use of gibberellic acid had negative effects on visual quality. Although there are studies showing that it increases resistance to stress conditions, visual quality is very important for turfgrasses. It was observed that grass species have different responses to gibberellic acid.

Keywords

• color
• turfgrass
• plant growth regulator
• turfgrass quality

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