The Plant Pathology Journal
- 제17권4호
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- Pages.227-230
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- 2001
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- 2093-9280(eISSN)
Selection of Resistant Hybrids of Atractylis Against Phytophthora drechsleri
- Kim, Dong-Kil (Department of Agricultural Biology, Gyeongsang National University) ;
- Shim, Chang-Ki (Genetic Engineering Institute, Gyeongsang National University) ;
- Kim, Hee-Kyu (Department of Agricultural Biology, Gyeongsang National University)
- 발행 : 2001.08.01
초록
Bioassay techniques using young leaves and roots were developed to screen resistance of Atractylis spp. against Phytophthora drechsleri. Among 638 plants collected from various regions of Korea from 1994 to 1996, 67 were pre-screened in fields naturally infested with P. drechsleri, which is the causal pathogen of rhizome rot of Atractylis. Among the pre-screened sources, 18 (ca. 26.8%) were highly resistant to the pathogen in leaf inoculation. In the root inoculation test, abundant sporangia were formed in susceptible plant roots, while only a few or no sporangia were produced on the roots which were found resistant in the leaf inoculation test. Among the selected resistant plants, A. japonica 96066 and 96104 were used to cross with another species, A. macrocephala 96362 that showed high yield with good quality of rhizome but susceptible to the pathogen. The F