An investigation was done to know the warty layer structural difference in bordered pit of longitudinal tracheid in Pinus densiflora Sieb, et Zucc., Pinus koraiensis Sieb, et Zucc., Pinus rigida Mill. and Larix kaempferi Carr. grown in Korea. Among the four wood species, warty layer was found in bordered pit of longitudinal tracheid of Pinus densiflora Sieb. et Zucc. and Pinus rigida Mill. The mean height and horizontal diameter of warty layer was found highest in Pinus densiflora Sieb, et Zucc. The height of warty layer was found the highest in juvenile wood of Pinus densiflora Sieb. et Zucc. and it gradually decreased towards the matured wood.
1. Introduction
2. Materials and Methods
3. Result and Discussion
4. Conclusion
5. References