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http://dx.doi.org/10.5423/RPD.2011.17.3.381

Influence of Environmental Factors on Conidial Germination of Alternaria dauci  

Park, Kyeong-Hun (Microbial Safety Division, National Academy of Agricultural Science, Rural Development Administration)
Yun, Hye-Jeong (Microbial Safety Division, National Academy of Agricultural Science, Rural Development Administration)
Ryu, Kyoung-Yul (Microbial Safety Division, National Academy of Agricultural Science, Rural Development Administration)
Yun, Jeong-Chul (Microbial Safety Division, National Academy of Agricultural Science, Rural Development Administration)
Kim, Se-Ri (Microbial Safety Division, National Academy of Agricultural Science, Rural Development Administration)
Kim, Won-Il (Microbial Safety Division, National Academy of Agricultural Science, Rural Development Administration)
Kim, Doo-Ho (Microbial Safety Division, National Academy of Agricultural Science, Rural Development Administration)
Kwon, Young-Seok (Planning and Coordination Division, National Institute of Crop Science, Rural Development Administration)
Cha, Byeong-Jin (Department of Plant Medicine, Chungbuk National University)
Publication Information
Research in Plant Disease / v.17, no.3, 2011 , pp. 381-385 More about this Journal
Abstract
Effects of temperatures, relative humidity, pH, and dry periods on conidial germination of Alternaria dauci were evaluated under in vitro conditions. Conidial germination was accelerated at over 95% relative humidity in $15^{\circ}C$ to $25^{\circ}C$ condition. Conidial germination was rapidly reduced at 5 regardless of relative humidity conditions. More than 50% of the conidial germination were initiated within 2 h at $25^{\circ}C$ through pH 5 to 7. The highest conidial germination of A. dauci was on 0.2% of carrot leaf extract. Conidia could survive longer than 12 h, even though its germination decreased. After a 12 h dry period, around 10% of conidia revived and germinated when conidia were hydrated again. These results could be used as the useful information on conidial germination of A. dauci and ecology of Alternaria leaf blight.
Keywords
Alternaria leaf blight; Daucus carota; Environmental factor; Spore germination;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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