بررسي فعاليت آنزيمهاي پراكسيداز و آلفا آميلا در مراحل مختلف رويشسي گونه رايش FAGUS ORIENTALIS LIPSKY( )

Study of peroxidase and alpha-amylase activities in different growth stages of beech (Fagus orientalis Lipsky

This research has been done in order to consider quantitative and qualitative alterations of Peroxidase and alpha-amylase enzymes on stages of growth of beech (Fagus orientalis Lipsky). This species is classified in crown position classes according to its light reaction (Illumination Index) in a natural stand. For this purpose, number of 1 - 4 years old branches have been collected in each crown position classes from trees which have been chosen by random in the last of winter. Quantitative activities of peroxidase were measured by spectrophotometer and qualitative studies of peroxidase and alpha-amylase enzymes were done by electrophoresis (PAGE method). Results showed that there was a clination point for beech reaction on light intensity from pole (25 - 30 years old) to sawtimber (45 - 50 years old) stages. Generally, it can be told this species is nearly shade tolerant in youth and it is intolerant speices in stage of closed to maturity so after.