ecotype, isoenzyme, Peroxsidase, physiogenetic, Wild service (Sorbus torminalis).

Document Type : Research article

Authors

1 Members of Scientific Board. Research Center of Agricultural and Natural Resources of Chaharmahal va Bakhtiari province

2 Member of Scientific Board, Research Institute of Forests and Rangelands

3 Member of Scientific Board, Mazandaran University

4 Member of Scientific Board, Gorgan University.

5 Member of Scientific Board, Research Center of Agriculture and Natural Resources

Abstract

This research was carried out to investigate the role of enzymes in ecological and physiogenetical studies in management and rehabilitation of wild service trees (Sorbus torminalis). The two studied sites are located in Sangdeh (1700-1800 m.a.s.l.) and Ashak (2200-2350 m.a.s.l.) in Farim region of CaspianForest. Wild service trees were identified and classified into two “desirable” and “undesirable” morphological groups. Then, one-year-old branches were sampled from the 41 selected trees in winter. In addition, seeds were collected from the trees and sowed in special containers at nursery. Sampling from different organs of the trees was made in the following summer and peroxidase enzyme was extracted immediately for quantitative and qualitative enzymatic studies. The results showed that only one ecotype could be identified in the whole region, which could be seperated into three classes. Comparison of isoenzymatical patterns of the leaf and branch showed specific isoenzymes in the leaves and branches of seedlings. Comparision of isoenzymatical patterns of different organs, repersented differences in qualitative and quantitative enzymatic patterns. With regards to the  natural ecosystem of the region, the genetic diversity of the studied individuals has been limited. Therefore, the extinction danger of wild service trees is brougth to notice.

References

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Iranian Journal of Forest and Poplar Research
Volume 14, Issue 4 - Serial Number 26
February 2007
Pages 305-292

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