In-vitro evaluation of aggressiveness and chlorothalonil sensitivity in Taphrina deformans isolates from peach leaf curl disease in Swat
Paper Details
In-vitro evaluation of aggressiveness and chlorothalonil sensitivity in Taphrina deformans isolates from peach leaf curl disease in Swat
Abstract
Peach (Prunus persica L.), a significant fruit crop in Swat, is frequently afflicted by peach leaf curl, a disease caused by the fungus Taphrina deformans. This study evaluates the in-vitro responses of six isolates of T. deformans to normal and chemical stress conditions. Isolates were cultured on Yeast Extract Peptone Dextrose Agar (YEPDA), both unamended and amended with 500 mg/L Chlorothalonil, with three replicates per condition. The colony diameter of each isolate was measured bi-weekly for two weeks. Disease incidence in peach orchards varied significantly across districts, with the highest recorded in Asharay (91.53%) and the lowest in Matta (21.34%). In unamended medium, Isolate Td5 (Matta) exhibited the highest aggressiveness, followed by Td3 (Null), while Td2 (Baidara) was the least aggressive. In the amended medium, Isolate Td6 (Bodigram) was the most aggressive, with Td5 (Matta) also showing high aggressiveness, and Td3 (Null) was the least aggressive. Sensitivity to Chlorothalonil varied among isolates; Td4 (Sambat) and Td3 (Null) were more sensitive, whereas Td6 (Bodigram) was the least sensitive. These findings highlight the variability in aggressiveness and fungicide sensitivity among T. deformans isolates, underscoring the need for tailored management strategies, including the strategic application of Chlorothalonil, to effectively control peach leaf curl in affected regions.
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Mati Ullah, Shafee Ur Rehman, Kudaibergen Osmonaliev (2024), In-vitro evaluation of aggressiveness and chlorothalonil sensitivity in Taphrina deformans isolates from peach leaf curl disease in Swat; IJB, V25, N3, September, P58-63
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