Kabakgillerde külleme hastalığı etmeni Podosphaera xanthii izolatlarının azoxystrobin’e karşı duyarlılıkları

Öz

Bu çalışma, Kabakgillerde külleme hastalığı etmeni Podosphaera xanthii’nin azoxystrobin’e karşı duyarlılık azalışının olup olmadığının belirlenmesi amacıyla yürütülmüştür. Bu amaçla kabak tarlalarından 37 adet örnek alınmıştır. Örnekler morfolojik olarak değerlendirilerek tüm izolatların Podosphaera xanthii olduğu belirlenmiştir. İzolatların duyarlılıklarını belirlemek için azoxystrobin’in 5 farklı dozu yaprak disk metoduna göre denenmiştir. Yaprak disk sonuçlarına göre azoxystrobin aktif maddesinin pratikteki öneri dozuna karşı 11 izolatın dayanıklılık kazandığı, 20 izolatın tolerant olduğu ve 6 izolatın ise duyarlı olduğu belirlenmiştir. Bu çalışma neticesinde, Kabakgillerde külleme hastalığına neden olan Podosphaera xanthii’de azoxystrobin’e karşı duyarlılık azalışının oluşmaya başladığı belirlenmiştir.

Anahtar Kelimeler

• azoxystrobin,duyarlılık,Podosphaera xanthii,kabak

Sensitivity of the isolates of Podosphaera xanthii, powdery mildew agent in cucurbits to azoxystrobin

Abstract

This study was carried out to determine if there is a decrease in sensitivity of powdery mildew pathogen Podosphaera xanthii in cucurbitaceace against azoxystrobin active ingredient. With this purpose, 37 samples were collected from zucchini fields. Based on the morphological characters, all powdery mildew isolates were identified as Podosphaera xanthii. In order to determine the sensitivity of the isolates, five different doses of azoxystrobin active ingredient were tested using leaf disc method. According to leaf disc results, 11 isolates were resistant to the recommended level of the active substance azoxystrobin while six isolates were susceptible. As a result of this study, it was determined that Podosphaera xanthii, which causes powdery mildew in cucurbitaceace, has observed a decrease in its sensitivity to azoxystrobin active substance.

Keywords

• azoxystrobin,sensitivity,Podosphaera xanthii,zucchini

References

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