Evaluation of morphological, Some phytochemicals traits and determination of antioxidant content of different organs of Viola odorata under the influence of ecological factor of altitude from central of Mazandaran province

Viola odorata contain compounds such as peptide, flavonoids, glycosides, alkaloids, saponins and tannins, which are used in the treatment of certain diseases, including cancer. Viola odorata grows in the north forests, and little research was done on domestication and identification of this plant. This study was designed to evaluate the effect of three altitude differences in sea level in Mazandaran province (sari (56m) to Azni (1035 m) above sea level) on quantitative and qualitative characteristics of Viola odorata. The morphological (area of leaf, leaf width, petiole length, pedicel length and root length) and biochemical (phenol content, total flavonoids, antioxidant capacity) traits studied in the region via completely random design. The results showed that plants accessions from Sari with lowest altitude, had the highest leaf length, number of leaves, stem length, leaf phenol, total phenol, total flavonoid and leaf antioxidant capacity. Interaction results between region and plants organ showed, the highest rate of phenol was in the leaf and flower of Sari accessions and the most flavonoids rate were in the flower of Sari accession and the leaf and flower of Kosoot accessions. In general, accessions collected from the Sari area have a relative superiority to other areas for cultivation.