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  • Küçük Resim
    Öğe
    Comparison of some morphological and physiological characters of apple scab pathogen (Venturia inaequalis) in two different agricultural ecology of Turkey
    (Springer, 2021) Kavak, Hamit; Çelik, Ali
    Bingol and Isparta are two remote regions with significant differences in terms of apple production in Turkey. In this study, some morphological and physiological characteristics of the apple scab (Venturia inaequalis) were measured and compared between these two regions. Colony colors and boundary lines, mycelial structures, colony growth rates, conidial numbers and sizes of the isolates were measured and compared in controlled conditions. With respect to colony morphologies of Bingol and Isparta isolates, important differences were observed. On the other hand, coloni development rate of Bingol isolates in PDA, MEA and CMA media were statistically significant, exhibiting an average of 30% faster growth compared to Isparta isolates. In addition, conidial numbers in 1 cm(2) area of PDA were to be higher and significant in Bingol isolates. However, it has not been determined differences for the dimensions of the conidial isolates developed in PDA belonging to two districts. As a result, it is considered that the morphological and physiological privileges determined by the comparison of the two district isolates of apple black spot is important. These results may be due to the genetic or fungicidal pressure due to the new race formation and the phenotypic characteristics due to different agricultural applications.
  • Küçük Resim
    Öğe
    Investigation of genetic diversity in apple scab (Venturia inaequalis) isolated from two different geographical areas of Turkey
    (Springer, 2019) Çelik, Ali; Kavak, Hamit
    Apple (Malus domestica) is a widely grown fruit in various climate types of the world and is exposed to the attack of many fungal disease agents during the growing period. One of them is Venturia inaequalis, which is probably the most important in terms of economic loss worldwide, which makes apple scab disease important in apple growing areas. In this study, the genetic diversity of apple scab in Bingol and Isparta provinces has been examined, which represent the two extremes of Turkey in terms of apple production. The 18 isolates obtained from these regions and were amplified by PCR using 7 RAPD primers. Polymorphic bands of the isolates were obtained by subjecting to agarose gel imaging. The average number of bands per primer was determined to be 3.91, with the highest polymorphic bands obtained from OPF04 encoded primer and the least polymorphic bands from OPG15 encoded primer. According to the clustering analysis, the total isolate population belongs to 5 different groups. Significant privileges were not observed between the two regions's isolates It is thought that RAPD primers have a certain level to determine the diversity but not high levels of intra- and interregional variation in the isolates of V. inaequalis.