Abstract:

Five wood rot fungi were used to decay 300 mature trees of white birch (Betula platyphylla) in Liangshui experiment stations. The decaying susceptible and resistant populations in 10 trees each with the highest and lowest weight loss were selected, in which total phenol in wood was tested. The result showed that the birch wood with lower total phenol was easy to be decayed by Fomes fomentarius and Piptoporus betulinus; Irpex lacteus, Pholiota adiposa and Coriolus versicolor were not sensitive to total phenol in white birch wood. After GC-MS test to methanol extractionof white birch wood, 6 organic compounds were found. This paper would provide some useful information in future study difference in the chemical characteristics of the wood between decaying susceptible and resistant populations, and select natural anti-decadent plants.

Key words: white birch (Betula platyphylla), wood rot fungi, susceptible populations, resistant populations, total phenol