Türkiye’de Pervane Çiçeğinde (Catharanthus roseus L.) Kök ve Kök Boğazı Çürüklüğüne Neden Olan Rhizoctonia solani AG-4’ün İlk Tespiti

Year 2020, Volume: 49 Issue: 2, 41 - 44, 12.11.2020

Güliz Tepedelen Ağaner , Gürkan Başbağcı

Abstract

Anavatanı Madagaskar olan pervane çiçeği (Catharanthus roseus L.) tek yıllık, çiçekli ve otsu özellikteki bir süs bitkisidir. Bu bitki park ve bahçeler için peyzaj amaçlı kullanılmaktadır. Pervane çiçeğinde sorun olan en önemli hastalıkların başında Rhizoctonia solani’nin neden olduğu gövde, kök ve kök boğazı çürüklüğü hastalığı gelmektedir. İzmir ilinde pervane bitkisinin yetiştirildiği alanlarda hastalıkla ilgili sorunlar gözlenmiştir. Bu nedenle 2017 yılında İzmir ili Bornova ve Bayındır ilçesinden hastalıklı bitki örnekleri toplanmış ve yapılan izolasyonlar sonucunda R. solani izolatları elde edilmiştir. Patojenisite testi sonucunda izolatların pervane çiçeğinde kök ve kök boğazı çürüklüğüne neden olduğu belirlenmiştir. Elde edilen izolatların morfolojik ve moleküler olarak tanılanması sonucu 5 adet R. solani AG-4 izolatı saptanmıştır. Bu çalışma sonucunda tespit edilen R. solani AG-4 pervane çiçeği bitkisinde Türkiye için ilk kayıttır.

Keywords

Catharanthus roseus, patojenisite, pervane çiçeği, Rhizoctonia solani AG-4

First report of Rhizoctonia solani AG-4 causing root and crown rot on Madagascar periwinkle (Catharanthus roseus L.) in Turkey

Abstract

Madagascar periwinkle (Catharanthus roseus L.) is an is annual, flowering and herbaceous ornamental plant originated in Madagascar. It is used for landscaping for parks and gardens. One of the most important disease in this plant is stem, root and crown rot caused by Rhizoctonia solani Kuhn. Disease-related problems on the plants have been observed in growing areas in İzmir. For this reason, infected plant samples were collected from Bornova and Bayındır district in İzmir and R. solani isolates were obtained. As a result of the pathogenicity tests, all the isolates caused root and crown rot on Madagascar periwinkle. According to morphological and molecular identification methods, 5 R. solani AG-4 isolates were determined. This is the first report of R. solani AG-4 of Madagascar periwinkle in Turkey.

Keywords

Catharanthus roseus, pathogenicity, Madagascar periwinkle, Rhizoctonia solani AG-4

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