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  • Küçük Resim Yok
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    Determination of resistance against to cereal cyst nematode, heterodera avenae (wollenweber, 1924) in some wheat germplasm [Bazi bugday genotiplerinin tahil kist nematodu heterodera avenae (wollenweber, 1924) karsi dayanikliliklarinin arastirilmasi]
    (2013) Imren M.; Toktay H.; Bozbuga R.; Dababat A.; Özkan H.; Elekçioglu I.H.
    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 Ha1 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, Cre1 was not showed completely resistant against H. avenae. Additionally resistance sources in of Turkish national wheat and wild genotypes needs to be determined.
  • Küçük Resim Yok
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    Investigation the efficiency of resistance gene, Cre1, against mediterranean cereal cyst nematode: Heterodera latipons franklin (Tylenchida: Heteroderidae) [dayani{dotless}kli{dotless}li{dotless}k geni Cre1'in akdeniz tahi{dotless}l kist nematodu, heterodera latipons franklin (Tylenchida: Heteroderidae)'e karşi{dotless} etkinliginin araşti{dotless}ri{dotless}lmasi{dotless}]
    (Ankara University, 2014) Imren M.; Kasapoglu E.B.; Dababat A.; Toktay H.; Elekcioglu I.H.
    Cereal cyst nematodes (Heterodera avenae group) are important pests of wheat; they include the three most important species of cereal cyst nematodes: Heterodera avenae Wollenweber, H. latipons Franklin and H. filipjevi (Madzhidov) in Turkey that were determined in different wheat growing areas. It was reported that Mediterranean cereal cyst nematode, Heterodera latipons which is widely found in the centre of the durum wheat growing area -South-eastern Anatolia region- in our country was reaching the economical threshold in many locations. It is known that the use of resistant/tolerant wheat varieties is the most effective controlling method against cyst nematodes in the wheat cultivation. Nowadays, nine different resistance genes (Cre genes), which are transferred from wild wheat species to wheat cultivated forms are available. In this study, the efficiency of the resistance gene, Cre1, against the population of H. latipons from Gaziantep (Karkami{dotless}s) was investigated. In the study, 38 genotypes carrying Cre1 gene and 26 genomes lacking resistance genes; this gives a total 64 wheat genotypes which are produced by parental crossing of SILVERSTAR containing the resistance gene, Cre1, in its genome, SOKOLL, CALINGIRI, GOLDMARKER, CROC_1/AE.SQUARROSA(224)//OPATA, FRAME, STYLET and PASTOR were used against H. latipons in the experiment. Among the 64 genotypes; 20 were resistant, 32 were moderately resistant and 12 were moderately susceptible to the nematode. Ten resistant, 20 moderately resistant and 8 moderately susceptible lines were determined against H. latipons that these 38 lines carried the Cre1 gene in their genome. With in this study, the resistant gene, Cre1, was not found to be completely resistant against H. latipons, but its 78% efficiency rate was found to be successful: therefore, it was concluded that it can be used against H. latipons in national wheat breeding programs. Furthermore, PASTOR, SOKOLL and CROC_1/AE.SQUARROSA(224)//OPATA wheat genotypes were determined as good resistance source against H. latipons. © Ankara Üniversitesi Ziraat Fakültesi.