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  소나무와 잣나무 원목에서 변재변색 발생 Development of fungal sapstain in logs of Japanese red pine and Korean pine
  글쓴이 : 관리자     날짜 : 11-08-31 17:35     조회 : 8556    
소나무와 잣나무 원목에서 변재변색 발생 Development of fungal sapstain in logs of Japanese red pine and Korean pine <Mokchae Konhag 30(2):128~133, 2002> Corresponding author lovewood@korea.ac.kr

This study was conducted to investigate the influence of storage time on the sapstain development of Japanese red pine and Korean pine logs during storage in log yard, and their stain characteristics. Japanese red pine and Korean pine trees were harvested and cut into logs in mid-January of 2001. These logs were transported to the local sawmills where they were closely stacked in remote parts of log yard. The logs were then sampled destructively by cutting seven-to-nine-cm long discs along the length of each log at intervals of 3, 4, 5, 6, and 8 months after felling. The stain coverage and maximal radial penetration of stain were measured from the discs of the sampled logs after felling. The stain coverage and maximal radial penetration of stain were measured from the discs of the sampled logs after the isolation of causal staining fungi. The sapstain was primarily infested by the attack of bark beetles and the species of bark beetle was identified as Tomicus piniperda. The main fungal species isolated from stained wood was Ophiostoma species. Based on the present study, the logs could be stored in log yard until May without stain but stain development was rapid after May and the severity of stain increased proportionally with storage time. Korean pine was more susceptible to fungal stain than Japanese red pine. During summer storage, decay started to develop in logs and the main species were identified as Tyromyces spp. and Schizophyllum commune. Information provided in this paper would be very useful to develop more effective control strategies for sapstain prevention in Japanese red pine and Korean pine logs.

Keywords: sapstain, Japanese red pine, Korean pine, log storage, Ophiostomatoid fungi, bark beetle

   

 
   

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