Evaluation of Viral Status and Susceptibility of Sweet Cherry Cultivars to Cherry Leaf Spot Blumeriella jaapii Rehm | ОЦЕНКА НА ВИРУСНИЯ СТАТУС И ЧУВСТВИТЕЛНОСТТА НА ЧЕРЕШОВИ СОРТОВЕ КЪМ ЦИЛИНДРОСПОРИОЗА Blumeriella jaapii Rehm
2014
Borisova, A., Institute of Agriculture, Kyustendil (Bulgaria) | Borovinova, M., Institute of Agriculture, Kyustendil (Bulgaria)
The aim of this study is to assess the viral status and susceptibility to Blumeriella jaapii of ten new to the region of Kyustendil cherry cultivars grafted on Gisela 5. The investigations were carried out in demonstration cherry orchard at the Institute of Agriculture – Kyustendil, which was planted in spring of 2003 by direct import from Germany of certified virus-tested vt propagated material. In total 65 cherry trees were tested by DAS-ELISA for infection with Prunus necrotic ringspot virus PNRSV, Prune dwarf virus PDV, Plum pox virus PPV, Cherry leaf roll virus CLRV, Raspberry ringspot virus RpRSV and Apple mosaic virus ApMV in the spring of 2013. For detection of Аpple chlorotic leaf spot virus АCLSV was applied Coctail-ELISA method. The susceptibility of cultivars to B. jaapii is determined by counting the degree of infestation of leaves. The rate of attack was calculated using the formula of Townsent, Heuberger. АCLCV was identified in 4.6% of tested samples. No infection of PNRSV, PDV, CLRV, RpRSV, PPV and ApMV in tested cultivars was detected. All studied cherry cultivars were susceptible to fungal diseases cherry leaf spot caused by B. jaapii. The highly susceptible cultivar is Kordia.
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