| Colletotrichum species에 의한 콩나물 부패 |
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김용기, 류재기, 류재당, 이상엽, 이승돈 |
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| Soybean Sprout Rot Caused by Colletotrichum species |
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Yong Ki Kim, Jae Ki Ryu, Jae Dang Ryu, Sang Yeop Lee, Seong Don Lee |
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| Abstract |
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Two novel casual agents of soybean sprout rot occurred at soybean sprouts cultivated under structure in Suwon area in 1997 were isolated and their pathogenicity was tested in vivo. An isolate formed crowed, black acervuli which were oval to elongated with numerous black, needlelike, intermixed long and short setae, 65~110×3.5~6.6 mm. Conidia were curved, lunate, unicellular, and hyliane and measured 21.5~22.5×3.5~4.0 mm. The other isolate produced conidia with straight and cylindrical, and measured 14.0~17.5×3.5~4.5 mm. Apressorium size was measured 6.3~8.5×4.5~5.0 mm. The agents were identified as Colletotrichum truncatum and C. gloeosporioides based on their morphological characteristics. There was a large difference in pathogenicity between two isolates. C. truncatum caused dark brownish discoloration of whole plants. It showed high pathogenicity with severe disease development. Meanwhile C. gloeosporioides caused light brown spots on cotyledon and its pathogenicity was not strong. The soybean sprout rot occurred by the two Colletotrichum species was firstly reported in soybean sprout in Korea, and we suggest it as "Colletotrichum rot of soybean sprout". |
| Key Words:
Colletotrichum truncatum, C. gloeosporioides, Pathogenicity, soybean sprout rot |
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