| Gymnosporangium asiaticum과 G. yamadae의 형태학적 특징 및 병원성과 강우량에 의한 병발생 차이 |
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류종숙, 이순구 |
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| Gymnosporangium asiaticum and G. yamadae: Morphological Characteristics, Pathogenicity and Epidemics by Rainfall |
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Jong Suk Ryu, Soon Gu Lee |
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| Abstract |
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Teliospores of two species of Gymnosporangium asiaticum and G. yamadae collected and identified from Juniperus chinensis, J. chinensis L. var. kaizuka. G. asiaticum was identified as the thick membraned (cell-walled) teliospores (avr 2.5 μm) and thin membraned teliospores (avr 1.2 μm), and the telia of G. asiaticum was bluntly conical shaped and occured on the leaves and branches of Chinese junipers. G. yamadae was identified as the thick membraned (cell-walled) teliospores (avr 2.5 μm) and thin membraned teliospores (avr 1.2 μm), and the telia of G. yamadae was gall or floral shaped and occured on the leaves and branches of Chinese junipers. Both of the telia of the two species of Gymnosporangium were occurred in a same tree of Juniperus chinensis L. var. kaizuka at the same time. But the dominant species is G. asiaticum. The more rainfall in the late of April (the season of forming basidiospore), the more rust diseases in Chaenomeles sinensis. C. sinensis, and Pyrus pyrifolia var. culta were infected by G. asiaticum (basidiospores) but Malus siebodii was not infected by G. asiaticum. |
| Key Words:
Gymnosporangium, Morphology, Pathogenicity, Rainfall |
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