Root knot nematodes (<italic>Meloidogyne</italic> spp.) cause immense yield losses in crops throughout the world. Use of resistant germplasms of plants limits the root knot nematode damages. In this study, 87 common bean (<italic>Phaseoulus vulgaris</italic> L.) genotypes were screened against the root knot nematode, <italic>Meloidogyne incognita</italic> to determine the resistance response under growth chamber conditions in Turkey. <italic>P. vulgaris</italic> genotypes were evaluated based on resistance index (RI); root galling severity and nematode egg mass production on a 1-9 scale. The nematode negatively influenced the growth (fresh weight) of bean genotypes. At the completion of the study, 13 bean genotypes were found as immune (Sehirali), highly resistant (TR42164, Seleksiyon 5, Seker Fasulye, Fas-Agadir-Suk-1) and moderately resistant (Acik Badem, TR68587, TR43477, TR53827, TR28018, Gülnar-3, Siyah Fasulye, Kibris Amerikan) against <italic>M. incognita</italic> thus suggesting the use of such genotypes in breeding studies as a parental material to develop the root knot nematode resistant cultivars.
SummaryRoot-knot nematodes (Meloidogyne spp.) are among some of the most economically important plant parasitic nematodes in the world. It is known that the nematode belong to Meloidogyne genus causes significantly crop losses in vegetables and cereals. The root-knot nematodes, M. artiellia causes damages especially cereals, legumes and cruciferous crops. Isolates of M. artiellia recovered from root and soil samples collected from wheat fields in 2012 growing season were firstly identified by using morphological and molecular aspects in Hatay province of Turkey. M. artiellia was morphologically identified by using morphological features and allometric criteria of second stage juvenile and female. Also, it was molecularly identified by using the sequences of partial mitochondrial DNA cytochrome C oxidase subunit (COI) gene region and clearly separated from other species.Key words: Meloidogyne artiellia, morphology, nucleotide polymorphism, wheat.
ÖzetKök-ur nematodları (Meloidogyne spp.) dünyada ekonomik önem sahip bitki paraziti nematodları arasındadır. Meloidogyne cinsine ait nematod türleri sebzelerde ve tahıllarda önemli oranda ürün kayıplarına neden oldukları bilinmektedir. Kök ur nematodu, M. artiellia özellikle tahıllar, baklagiller ve cruciferae familyasına ait ürünlerde zarara neden olabilmektedir. Bu çalışmadaki M. artiellia izolatları Türkiye'de ilk defa Hatay ili buğday ekim alanlarından 2012 yılı üretim sezonunda toplanan toprak ve kök örneklerinden elde edilmiş olup morfolojik ve moleküler olarak tanımlamaları yapılmıştır. M. artiellia, ikinci dönem larva ve dişi bireylere ait morfolojik özellikler ve allometrik kriterler esas alınarak tanımlanmıştır. Ayrıca, mitokondriyal DNA'nın sitokrom C oksidaz alt ünitesine (COI) ait nükleotid dizilimleri kullanılarak moleküler olarak da tanımlanmış ve diğer kök ur nematodu türlerinden bariz olarak ayrıldığı saptanmıştır.Anahtar sözcükler: Meloidogyne artiellia, morfoloji, nükleotid polimorfizmi, buğday.
Bozyazı ilçesi (Mersin) muz seralarında önemli bitki paraziti nematodların (Helicotylenchus multicinctus, H. dihystera ve Meloidogyne spp.) (Nemata) popülasyon değişimlerinin araştırılması 1 Investigation on population dynamics of important plant parasitic nematodes (Helicotylenchus multicinctus, H. dihystera and Meloidogyne spp. (Nemata) in banana greenhouses grown in Bozyazı (Mersin)
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