Evaluation of Fire Blight Erwinia amylovora Disease Reaction of Pear Hybrid Combinations

Year 2017, Volume: 23 Issue: 2, 177 - 184, 01.03.2017

Yasemin Evrenosoğlu Adalet Mısırlı Yeşim Aysan Hikmet Saygılı Özlem Boztepe Sümer Horuz Nihal Acarsoy Bilgin Emre Bilen Ali Baykul

Abstract

Fire blight caused by pathogenic bacterium Erwinia amylovora, is the serious disease of pear. Since there is no effective chemical management to this disease except antibiotic-type compounds, it is very important to improve new fire blight resistant cultivars. In this research, it was aimed to select and develop fire blight resistant pear types and to determine fire blight susceptibility levels of pear hybrids, obtained from different projects. Hybrid plants were inoculated by shoot injections twice each year. Evaluations were made through necrotic shoot rate and susceptibility levels of hybrids were determined. During the experiments, 7036 hybrid pear seedlings inoculated, and 12.28% of them were found as “very low susceptibility” A , 3.62% as “low susceptibility” B classes

Keywords

Artificial inoculation, Erwinia amylovora, Hybrid, Pear

Farklı Armut Melezleme Kombinasyonlarında Ateş Yanıklığı Hastalığı Erwinia amylovora Reaksiyonunun Değerlendirilmesi

Abstract

Erwinia amylovora bakterisinin neden olduğu ateş yanıklığı hastalığı, armudun önemli hastalıklarından biridir. Hastalığa karşı, antibiyotikler dışında etkili bir kimyasal mücadele bulunmaması nedeni ile ateş yanıklığına dayanıklı yeni çeşitlerin geliştirilmesi çok önemlidir. Bu araştırmada, ateş yanıklığına dayanıklı armut tiplerinin seçilmesi ve geliştirilmesinin hedeflenmesinin yanısıra farklı projelerden farklı melezleme kombinasyonlarıyla elde edilen melezlerin ateş yanıklığına hassasiyet seviyelerinin belirlenmesi amaçlanmıştır. Melez bitkiler sürgün enjeksiyonu yoluyla her yıl iki kez inokule edilmişlerdir. Nekroz oluşturan sürgün oranına göre değerlendirmeler gerçekleştirilmiş ve hassasiyet sınıfları belirlenmiştir. Denemeler boyunca, inokule edilen toplam 7036 melez bitkiden, % 12.28’i “çok az duyarlı” A , % 3.62’si ise “az duyarlı” B sınıfta yer almışlardır.

Keywords

Suni inokulasyon, Erwinia amylovora, Melez, Armut

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