원문정보
초록
영어
This study was aimed to investigate and to compare the anatomical characteristics of compression wood (CW), lateral wood (LW) and opposite wood (OW) in a stem of Pinus densiflora. The tracheid length, ray number, ray height, and microfibril angle (MFA) of CW, LW, and OW in each annual ring (5th, 10th, 15th, 20th, 25th, 30th, 35th, and 40th) were analyzed by an optical microscopy, while the crystalline characteristics from each part in each annual ring were measured by an X-ray diffraction method. The CW had shorter tracheid length than LW and OW from 5th to 25th annual ring, while the tracheid lengths of OW were the longest from 5th to 30th annual ring. CW showed higher ray height than LW and OW from 10th to 40th annual ring, while CW had greater MFA than LW and OW in each annual ring. Furthermore, the ray number of CW was the lowest among CW, LW, and OW in each annual ring, while the relative crystallinity of CW was smaller than those of LW and OW in each annual ring. The CW had smaller crystal width than LW and OW at 5th to 20th and 40th annual ring. In conclusion, it was suggested that the anatomical characteristics among CW, LW, and OW in a stem of Pinus densiflora showed some distinct differences.