Neziha Gamze AKBAY, Ramazan ÇETİNTAŞ, Mustafa KÜSEK

Bazı Toprak Bakterilerinin Domates Bitkisindeki Kök-Ur Nematodu Meloidogyne javanica (Treub) Chitwood Populasyonlarına Etkisi

Bu çalışmada, 10 farklı toprak bakteri izolatının, domates(Lycopersicon lycopersicum cv. Dynamo) bitkisinde üç nematodinokulasyon seviyesinde (0, 500 ve 1000 L2 veya yumurta/saksı)bulaştırılan Meloidogyne javanica’ya olan etkileri araştırılmıştır.Deneme, Kahramanmaraş Sütçü İmam Üniversitesi, Ziraat Fakültesiseralarında 10×3×6 (10 adet toprak bakteri izolatı, 3 nematodinokulum seviyesi, 6 tekerrür) tesadüfi bloklar deneme desenine görekurulmuştur. Araştırma sonuçlarına göre; ZHA287 (Bacillus subtilis),ZHA246 (Mycobacterium confluentis) ve ZHA579 (Tanımlanmamış)izolatlarının bitki kök-ur sayısını ve yumurta paket sayısını azalttığı,ancak bitki büyümesine etki etmediği gözlenmiştir. Tsukamurellapaurometabola’nın ZHA569 izolatının kök-ur nematodupopülasyonunu baskı altında tuttuğu ve bitki kök yaş ve kuru, gövdeyaş ve kuru ağırlıklarını arttırdığı gözlenmiştir. Paenibacilluscastaneae’nin ZHA178 izolatı ve Mycobacterium immunogeumZHA57 izolatı, kontrole (+) göre yumurta paketi ve kök-ur sayılarınaetkili olmadıkları fakat bitki büyümesini arttırdığı gözlenmiştir.Çalışılan 10 bakteri arasında, ZHA246 (M. confluentis), ZHA579(Tanımlanmamış), ZHA569 (T. paurometabola) ve ZHA287 (B.subtilis) izolatlarının gelecekte bitki paraziti nematodlarının biyolojikmücadelesinde kullanılabilecek potansiyele sahip olabilecekleridüşünülmektedir.

The Effect of Some Soil Bacteria on Root-Knot Nematode Meloidogyne javanica (Treub) Chitwood Populations on Tomatoes

In this study, the effect of 10 bacterial isolates against Meloidogyne javanica (inoculated at three levels of 0, 500 and 1000 J2 or eggs pot) were determined on tomato (Lycopersicon lycopersicum cv. Dynamo). The trial was designed as a randomized complete block design, consisting 10 plant soil bacteria strains and 2 control group (–, +) treatments with 6 replications, conducted in Kahramanmaraş Sütçü İmam University, Agricultural Faculty green houses. Results of the study indicated that (Bacillus subtilis) ZHA287, (Mycobacterium confluentis) ZHA246, (unidentified) ZHA579 isolates reduced root galling and the number of egg masses, however they did not have effect on the plant growth. Isolate ZHA569 of Tsukamurella paurometabola repressed the root knot nematode numbers and increased the dry and fresh root weight, and dry and fresh green plant part weights. Isolate ZHA178 of Paenibacillus castaneae and ZHA57 Mycobacterium immunogeum did not affect the root galling nevertheless, increased the plant growth as compared to control (+). Results indicated that among 10 bacterial isolated studied, ZHA246 (Mycobacterium confluentis), ZHA579 (unidentified), ZHA569 (Tsukamurella paurometabola) and ZHA287 (Bacillus subtilis) could be promising as bio control agents for the future nematode disease managements.

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