Person:
Toktay, H.

Loading...
Profile Picture
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
Toktay
First Name
H.
Name
Toktay, H.

Search Results

Now showing 1 - 2 of 2
  • Identification of genetic resistance to cereal cyst nematodes; Heterodera avenae (Wollenweber, 1924), Heterodera filipjevi (Madzhidov, 1981) Stelter and Heterodera latipons (Franklin, 1969) in some international bread wheat germplasms
    (Entomological Society Turkey, Ege University, 2013) Imren, M.; Toktay, H.; Bozbuga, R.; Erginbas Orakci, G.; Dababat, A.A.; Elekcioglu, I.H.
    The cereal cyst nematodes, Heterodera avenae group, are known as parasites of cereals worldwide. In Turkey, the cereal cyst nematodes, Heterodera filipjevi, H. avenae and H. latipons, are the three known species infested wheat fields and cause high yield losses. The using of resistance varieties is one of the most effective methods for controlling cereal cyst nematodes. Recently, resistance genes (Cre genes) which are obtained from wild wheat genotypes have been transferred into bread wheat varieties to control the cereal cyst nematodes species. In this study, the efficiency of some sources of resistance (CreR, Cre1, Cre2, Cre3, Cre7 and Cre8) in wheat against some Turkish H. avenae, H. filipjevi and H. latipons populations was investigated in-vitro conditions. According to results, the effect of resistance genes showed variation depending on different Cereal cyst nematode populations; H.avenae, H. filipjevi and H. latipons. Although Cre1 gene was only found as completely resistant to all (three) nematode species, Cre3 and Cre7 were found resistant to H. avenae and H. latipons. Cre R was also determined as resistant to H. filipjevi and H. latipons populations but Cre8 was only found resistant against to H. filipjevi population. No resistance was found in Cre 2 gene against to all nematode populations. Additionally, 2 resistance gene-free variety and lines were found resistant to H. avenae; 3 wheat lines to H. filipjevi and 11 wheat genotypes were found moderately resistant to H. latipons.
    Publication
  • Heterodera avenae yumurtalarinin inkubasyonu uzerine sicakligin etkisi ile en uygun deneme yontem ve materyallerinin arastirilmasi
    (Türkiye Entomoloji Derneği, 2012) Imren, M.; Toktay, H.; Ozarslandan, A.; Dababat, A.A.; Elekcioglu, I.H.
    In this study, the effect of temperatures on the incubation duration of the cereal cyst nematode cysts, Heterodera avenae (Wollenweber, 1924) and determining of the optimum methods and materials was investigated under in-vitro conditions. The effect of tempratures on incubation duration of Heterodera avenae cysts was studied on two different incubation stages. First incubation exposured to all cysts was set up 66 days at 4ºC after each samples transfered different temperatures (5, 10, 15, 20 and 25ºC). The cumulative hatching percent was significantly effected by different temperatures at the end of 252 days. Hatching was greater at lower temperatures (5, 10 15 ºC) compared to at higher temperatures of (20, 25ºC) ranging between 46.7, 82.3 and 45.9 % vs and 30.7 and 19.0%, respectively. Although the highest cumulative hatching of 82.3% was obtained at a constant 10ºC at 252 days, the lowest cumulative hatching of 19.0% was obtained to 25ºC at 252 days. The most suitable soil type for the in-vitro conditions was found the sandy soil (70 % sand: 29% field soil: 1% organic matter), best inoculation rate was 2,5 second stage juveniles per gram soil and inoculation time at planting day.
    Publication