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http://dx.doi.org/10.4489/KJM.2003.31.1.050

Powdery Mildew on Phlox Caused by Oidium sp. in Korea  

Kwon, Jin-Hyeuk (Gyeongsangnam-do Agricultural Research and Extension Services)
Park, Chang-Seuk (College of Agriculture, Gyeongsang National University)
Publication Information
The Korean Journal of Mycology / v.31, no.1, 2003 , pp. 50-52 More about this Journal
Abstract
The powdery mildew of Phlox (Phlox paniculata) extensively occurred in the experimental farm of Cheongam-myon, Hadong-gun, Gyeongnam province in 2002. Both sides of the leaves and stems were covered with the white fungal spores and mycelia, and then the leaves became brown to dark brown in color, eventually died. The conidiophores on the lesion were observed. Conidia were cylindric in shape, colorless, $25.3{\sim}49.4{\times}12.3{\sim}17.2{\mu}m$ in size and borne singly on conidiophore. Fibrosin bodies were not observed. Conidiophores were straight with 2-4 cylindric cells, and $65.7{\sim}124.8{\mu}m$ in size. Appressoria were lobed. Cleistothecia were not formed. This is the first report on powdery mildew of Phlox caused by Oidium sp. in Korea.
Keywords
Oidium sp.; Phlox; Phlox paniculata; Powdery mildew;
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