Horizontal distribution of ectomycorrhizal infection in Dipterocarpus turbinatus plantations of Bangladesh

Autor: S. M. S. Huda, M. K. Bhuiyan, M. M. U. Haque, Mohammad Belal Uddin, M. A. U. Mridha
Rok vydání: 2006
Předmět:
Zdroj: Journal of Forestry Research. 17:47-49
ISSN: 1993-0607
1007-662X
Popis: Garjan (Dipterocarpus turbinatus Gaertn. F) is a highly ectomycorrhizal tree species growing in hilly areas of Bangladesh. The horizontal distributions of ectomycorrhizas (ECM) in different distances (1, 2, 3 & 4m) from the tree base were determined in 5, 10 and 20-year-old D. turbinatus plantations of Chittagong University Campus (CUC) in 2003. The ECM infection (%) in roots was counted at three hill positions (top, mid and bottom) for each of the plantations. Samples of 1000 cm3 rhizosphere soil were collected from underneath the trees at different horizontal distances. The percentage of infection at different distances and hill elevations varied considerably. In 5 and 10-year-old plantations, the occurrence of infection (%) was rapidly declined with increasing distances, while in 20-year-old plantation, the infection increased sharply with increasing distances from the tree base. The highest infection (81.33%) was found at 4 m distance from the tree at bottom hill in 20-year-old plantation and the lowest (55.33%) at the same distance at the top of the hill in 5-year-old plantation.
Databáze: OpenAIRE
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