Farklı bitki türlerinin Türkiye’den iki Ditylenchus dipsaci Kühn, 1857 (Tylenchida: Anguinidae) popülasyonuna hassasiyetleri

Öz

Soğan sak nematodu Ditylenchus dipsaci Kühn, 1857 (Tylenchida: Anguinidae) dünyanın her yerine yayılmış önemli bitki paraziti nematodlardan biridir. Nematodun kontrolü için yerel popülasyonların konukçu spektrumunun bilinmesi gerekmektedir. Yirmi dokuz bitki türünün hassasiyet durumları Türkiye'de Orta Anadolu Bölgesi’nden elde edilen D. dipsaci'nin soğan ve sarımsak izolatları için Karaman’da 2019 yılında büyütme dolabı koşullarında test edilmiştir. Soğan, sarımsak ve domates, her iki D. dipsaci popülasyonu için de mükemmel konukçu olarak belirlenmiştir. Bezelye ve ıspanak, soğan popülasyonu için mükemmel bir konukçu iken, sarımsak popülasyonu için iyi konukçudur. Salatalık her iki popülasyon için de iyi konukçudur. Biber, kabak ve patlıcan her iki nematod popülasyonu için zayıf konukçu olarak tanımlanmıştır. Fasulye ve patates bitkileri soğan popülasyonu için zayıf konukçu iken, sarımsak popülasyonu için konukçu değildir. Arpa, buğday, çavdar, çilek, havuç, kara lahana, kavun, lale, marul, mısır, nergis, nohut, pırasa, sümbül, şeker pancarı tütün, yonca ve yulaf, her iki nematod popülasyonuna da konukçu değildir. Ditylenchus dipsaci ile enfeksiyon, soğan ve domatesin bitki ağırlığını ve biberin bitki boyunu önemli ölçüde azaltmıştır. Gerçekleştirilen çalışma ile Türkiye'de Orta Anadolu Bölgesi’nde D. dipsaci ile bulaşık alanlarda kullanılabilecek rotasyon bitkileri belirlenmiştir.

Anahtar Kelimeler

• Konukçu spektrumu
• bitki paraziti nematod
• ırk
• ekim nöbeti
• soğan sak nematodu

Susceptibility of different plant species to two populations of Ditylenchus dipsaci Kühn, 1857 (Tylenchida: Anguinidae) from Turkey

Abstract

Stem and bulb nematode, Ditylenchus dipsaci Kühn, 1857 (Tylenchida: Anguinidae), is one of the most important plant parasitic nematodes worldwide. The host range of local populations needs to be determined for control using crop rotation. Susceptibility of 29 plant species was tested for onion and garlic populations of D. dipsaci from Central Anatolian Plateau in Turkey under growth chamber conditions in Karaman in 2019. Based on the reproduction factor of the nematodes, garlic, onion and tomato were excellent hosts for both populations of D. dipsaci. Pea and spinach were excellent hosts for the onion population, while good host for the garlic population with cucumber a good host for both populations. Eggplant, pepper and zucchini were identified as poor hosts for both nematode populations. Bean and potato were poor hosts for the onion population, and were non-hosts for the garlic population. Alfalfa, barley, carrot, chickpea, daffodil, hyacinth, kale, leek, lettuce, maize, melon, oat, rye, strawberry, sugar beet, tobacco, tulip and wheat were non-hosts for both populations of D. dipsaci. Infection with D. dipsaci significantly reduced plant weight of onion and tomato, and plant height of pepper. Rotational crops for use in areas infected with D. dipsaci in Central Anatolian Plateau in Turkey were indicated by the current study.

Keywords

• Host range
• plant parasitic nematode
• race
• rotation,
• stem and bulb nematode

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