Türkiye’den toplanan yerel soğan çeşitlerinin soğan sak nematodu Ditylenchus dipsaci’ye dayanıklılık reaksiyonları

Abstract

A total of 27 accessions of different onion landraces from Turkey were screened for their resistance to stem and bulb nematode. The study was carried out in a growth chamber at 20°C, with a 16/8 h (light/dark) photoperiod and at 70% relative humidity. The plants were grown in 7 X 8 cm diameter plastic pots filled with a mixture of 45% sand, 45% clay loam soil, 10% organic matter. Two hundred nematodes in 10 µl nematode suspension were inoculated to each plant at the 3-4 leaves stage. Plants were harvested six weeks after inoculation and number of nematodes was counted. Onion landraces that had low nematode reproduction were subjected to a second screening test. The landraces were classified from moderately resistant to highly susceptible according to their nematode reproduction in comparison to susceptible standard cultivar Betapanko. Accession 30 had the lowest number of nematodes in the both experiments and was classified moderately resistant and moderately susceptible in the first and second experiments, respectively. The accessions 23 and 25 had lower number of nematodes relative to standard cultivar and were classified as moderately susceptible in conclusion.

Bazı yerel sarımsak genotip ve köy çeşitlerinin soğan sak nematoduna, Ditylenchus dipsaci (Kühn, 1857) Filipjev, 1936 (Rhabditida: Anguinidae) karşı dayanıklılıklarının belirlenmesi

“…Similar results were revealed in a study by Yavuzaslanoğlu (2019), where significant differences were detected in some genotypes for plant length and plant diameter, but no significant differences were found in plant weight. Some varieties of oat, rye, bean, clover and onion have been reported to be resistant to races of stem and bulb nematode (Plowright et al, 2002;Yavuzaslanoğlu, 2019;Yavuzaslanoğlu & Ozsoy, 2020). However, to our knowledge, there are no studies conducted to determine the resistance of garlic plant varieties to stem and bulb nematode.…”

“…So far, some varieties of clover, rye, bean, oat and onion that show resistance to different races of the stem and bulb nematode have been identified (Plowright et al, 2002;Yavuzaslanoğlu, 2019;Yavuzaslanoğlu & Ozsoy, 2020). However, no study has been reported about resistance in garlic to stem and bulb nematode.…”