A species for drought landscape applications; Production, ex-situ conservation and ornamental plant characteristics of Onosma armena DC.

Öz

Due to climate change and anthropogenic effects on the flora, the pressure on the endemic and rare species is increasing. Conservation of these species is necessary in accordance with national regulations and international agreements. Onosma armena DC. plant species is endemic and has a high tolerance to hard ecological conditions and drought. It has a high ornamental plant potential in terms of aesthetic properties. In this study, we aimed to determine the plant characteristics related to ornamental plant use, the development performance in natural and cultural conditions, the seed production methods, and the ex-situ conservation of Onosma armena DC. plant species. According to the findings, Onosma armena DC. plant species is suitable for use in xeriscape applications with an average of 52 days of flowering in the April-June period, with its yellow flower color, many flowers, spreading plant form, and performance in extremely dry conditions in its natural habitats. The best germination temperature was found to be at 20 °C. The best treatments for the germination of Onosma armena DC. seeds were determined as cold wet stratification at 40 °C for three months + soaking in 600 ppm GA3 (69.33%) solution for 24 hours and cold wet stratification (70.33%) in perlite at 4 °C for 4 months. With the seedlings obtained during the study, a garden was established for genetic resource, promotion, and ex-situ conservation in the culture medium, and the species was taken ex-situ conservation. The next cultivation studies will be carried out with the seeds and plants obtained from the resource garden without no more disturbing natural populations.

Anahtar Kelimeler

• Onosma armena
• seed germination
• ex situ conservation
• cultivation
• xeriscape

Kurakçıl peyzaj uygulamaları için bir tür; Onosma armena DC.’nın üretimi, ex-situ korunması ve süs bitkisi özellikleri

Öz

İklim değişikliği ve flora üzerindeki antropojen etkiler nedeniyle endemik ve nadir türler üzerindeki baskı giderek artmaktadır. Ulusal mevzuat ve uluslararası antlaşmalar gereği bu türlerin korunması zorunluluktur. Onosma armena DC. bitki türü endemik olmasının yanısıra kötü ekolojik koşullara ve kuraklığa toleransı yüksek olan bir türdür. Estetik özellikleri bakımındanda yüksek süs bitkisi potansiyeli taşımaktadır. Bu çalışmada, Onosma armena DC. bitki türünün, süs bitkisi olarak kullanımı ile ilgili bitkisel özelliklerinin, doğal ve kültürel koşullardaki gelişim performansının, tohumla üretim yöntemlerinin belirlenmesi ve türün ex-situ korumaya alınması amaçlanmıştır. Bulgulara göre, nisan-haziran döneminde ortalama 52 gün çiçekli kalan bitki, sarı çiçek rengi, çok sayıdaki çiçeği, yayılıcı bitki formu, doğal habitatındaki ekstrem stresli koşullardaki performansı ile kurakçıl peyzaj uygulamalarında kullanıma uygun bir türdür. Araştırmamızda 20 oC çimlenme ortamı ile üç ay 4 oC’de nemli soğuk katlama + 24 saat 600 ppm GA3 (%69,33) ve 4 ay 4 oC’de perlit içerisinde nemli soğuk katlama (%70,33) uygulamaları Onosma armena DC. tohumlarının çimlenmesi için en iyi uygulamalar olarak tespit edilmiştir. Çalışmada elde edilen fidelerle kültür ortamında, genetik kaynak, tanıtım ve ex-situ (doğal yaşam alanı dışında koruma) muhafaza amaçlı bahçe oluşturularak bu tür korumaya alınmıştır. Bundan sonraki kültüre alma çalışmaları doğal popülasyonlardan tohum almadan bu bahçeden temin edilen tohumlarla ve bahçedeki bitkilerle yürütülecektir.

Anahtar Kelimeler

• Onosma armena
• tohum çimlenme
• ex-situ muhafaza
• kültüre alma
• kurakçıl peyzaj

Kaynakça

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