Yazar "Elekcioglu, I. Halil" seçeneğine göre listele

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    Determination of resistance against to Cereal cyst nematode, Heterodera avenae (Wollenweber, 1924) in some wheat germplasm
    (ENTOMOLOGICAL SOC TURKEY, EGE UNIV, 2013) Imren, Mustafa; Toktay, Halil; Bozbuga, Refik; Dababat, Amer; Ozkan, Hakan; Elekcioglu, I. Halil
    The cereal cyst nematode, Heterodera avenae is one of the most important pests of wheat in many countries in the world with different climatic types. Heterodera. avenae is commonly distributed in the Eastern Mediterranean region of Turkey and all populations investigated belong to the Hal group, Ha21 pathotype. This study was aimed to found resistance sources from the national wheat varieties, wheat wild genotypes and international wheat genotypes against H. avenae Karlik Adana population (Ha21 pathotype). Results showed that four national wheat varieties, seventeen wheat wild genotypes and twenty three international wheat genotypes were found to be moderately resistant against to Eastern Mediterranean Region of Turkey H. avenae population. Among these genotypes, the national bread wheat variety, Adana 99 (PFAU/SERI82//BOG"S"), some wild genotypes and international genotypes can be used in national wheat breeding programmes. However, Crel was not showed completely resistant against H. avenae. Additionally resistance sources in of Turkish national wheat and wild genotypes needs to be determined.
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    Identification and prevalence of potato cyst nematodes and root-knot nematodes in the potato production areas of Izmir Province, Turkey
    (Entomological Soc Turkey, Ege Univ, 2020) Demirbas Pehlivan, Hulya; Kaskavalci, Galip; Kasapoglu Uludamar, Ece B.; Toktay, Halil; Elekcioglu, I. Halil
    Globodera spp.and Meloidogyne spp. were identified using morphological and molecular methods. Also, the distribution and population densities of these nematodes were determined in potato cultivation areas of Izmir (Turkey) in 2015. Two hundred and twenty-three soil samples were collected during the survey and 32 samples were found to be infested with Globodera spp. and 41 samples with Meloidogyne spp. The identification of nematodes was made morphologically using perennial patterns of cyst/female individuals and morphometrics of second stage juveniles. Also, species specific primers were used for molecular identification. Only Globodera rostochiensis (Wollenweber, 1923) Skarbilovich, 1959 (Tylenchida: Heteroderidae) were found in the samples that contained cyst nematodes. Also, the root-knot nematodes, Meloidogyne chitwoodi Golden, O'Bannon, Santo & Finley, 1980, Meloidogyne hapla (Chitwood, 1949), Meloidogyne incognita (Kofoid & White, 1919) Chitwood, 1949, and Meloidogyne javanica (Treub, 1885) Chitwood, 1949 (Tylenchida: Meloidogynidae) were found. The prevalence rates of Meloidogyne species were determined as 2.4, 12.2, 61.0 and 24.4%, respectively. In terms of the number of individuals in soil, all G. rostochiensis (10 eggs/g soil) and M. chitwoodi (1 juvenile/250 cm(3) soil) population levels were detected above the economic damage thresholds for potato production. Also, two populations of M. incognita (0.5-2 juvenile/250 cm(3) soil) were found above the specified threshold levels.