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감귤나무 가지에서 분리한 검은점무늬병균 Diaporthe citri의 균학적 특성
권혁모,남기웅,김광식,김동환,이성찬,현재욱 한국식물병리학회 2003 식물병연구 Vol.9 No.3
Mycological characteristics of Phomopsis citri isolates obtained from blighted twigs of citrus were investigated in this study. Totally 18 isolates collected from four citrus cultivation areas in Jeju island were all identified as Phomopsis citri known as the anamorph stage of Diaporthe citri. Pycnidia the isolates sized from 112.2 to 614.4 mm (av. 328.8 mm) and shaped conical to lenticulata in black. Two types of phialospores, a- and b-spores were observed from pycnidia. The a-spores were hyaline, unicellula, fusiform to ellipsoidal and sized 4.7~8.7 1.9 × 3.5 mm (av. 6.7 × 2.3 mm). The b-spores were hyaline, unicellula, filiform, curved and often strongly hooked and sized 13.2~27.1 × 0.8~1.6 mm (av. 22.1 × 1.0 mm). All isolates grew well and produced abundant pycnidia and spore horns on PDA. In addition, all isolates showed strong pathogenicity to citrus fruit inducing melanose symptoms when artificially inoculated with the pycnidial spores.