Research in Plant Disease 2006;12(2):75-80.
Published online August 30, 2006.
장미 뿌리혹병 발생과 품종간 저항성 차이
한경숙, 김원희, 박종한, 이중섭, 서상태
 
Occurrence of Crown Gall of Rose and Rose Cultivar-specific Resistance
Kyung Sook Han, Won Hee Kim, Jong Han Park, Jung Sup Lee, Sang Tae Seo
Abstract
Crown gall on rose was observed in greenhouse during year 2003-2005. The disease incidence was up to 28.3% and the disease was the severer in hydrophonics culture than that in soil. The typical gall symptom occurred mainly on the root and crown resulting in poor foliage, stunting, and fewer blossoms. Sixty-three rose cultivars were inoculated with Agrobacterium. tumefaciens isolated from rose crown gall, to evaluate rose cultivar-specific resistance. The size of galls from inoculated rose stems was measured in a greenhouse test. Tumors formed in almost varieties of rose inoculated. Based on the frequency of tumor occurrence and weight of galls formed on the stem of rose, it was shown that ``Little Marble``, ``Golden Gate`` and ``Rosa Roxette`` were extremely susceptible to crown gall. Some varieties such as ``Little Silver`` appeared to be resistant to the crown gall.
Key Words: Agrobacterium tumefaciens, Crown gall, Resistance, Rose


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