| 감염목 벌채 톱밥에 포함된 소나무재선충의 뿌리 감염 불가능성 |
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이승규, 박주용, 이총규, 황진현, 문일성, 전향미, 허혜순 |
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| Improbability of Root Infection by the Pine Wood Nematode in Sawdust Discharged from Chain Saw Lumbering of Infected Trees |
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Seung Kyu Lee, Joo Young Park, Chong Kyu Lee, Jin Hyun Whang, Il Sung Moon, Hyang Mi Cheon, He Soon Heo |
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| Abstract |
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Objective of this study is to examine whether pine wood nematode (PWN: Bursaphelenchus xylophilus) in the sawdust discharged from infected trees cause pine wood disease or not. For this, survival time of PWN in soil was examined in which soil moisture was controlled as 15%, 22.5%, and 30% in volume ratio, respectively. The pathogenicity tests were conducted under greenhouse and field conditions. Survival time of PWN in soil was about three days in the saturated (about soil moisture of 23% in volume ratio) and dark condition between 25 and 28oC of room temperature. None of potted seedlings with non-wounded roots was infected by PWN in sawdust. In field, pine wood disease was not occur in any pine trees. These results indicated that PWN discharged on soil when the infected trees were cut by chain saw can not cause pine wood disease. |
| Key Words:
Bursaphelenchus xylophilus, Root infection, Sawdust |
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