Document Type : Research Paper
Authors
1 Faculty of Horticulture, Ferdowsi University of Mashhad, Mashhad, Iran
2 Research Institute of Food Science and Technology (RIFST), Mashhad, Iran
3 Faculty of Biothecnology, Department of Agriculture, Ferdowsi University, Mashhad, Iran
4 Faculty of Horticulture, Department of Agriculture, Ferdowsi University, Mashhad, Iran
Abstract
K. odoratissima Mozaff., belonging to the Apiaceae family, is a known medicinal and forage species, endemic to Iran. It has not been reported in other regions of the world. Due to the excessive harvesting in the early period of growth and the relatively high time required for the establishment and seed production, this species does not have the opportunity to revitalize and seed production and for this reason, it is considered as one of the endangered species of Iran. Advances in tissue culture can be most effective in propagation of endangered plants as well as increasing the genetic potential of medicinal plants. To study the effect hormonal treatments on callus induction sterile seedling explants were prepared. Treatments included MS basal medium along with different hormonal levels (2,4-D (0.5, 1 and 2 mg/l) or a1, a2, a3 + Kin (0, 0.5 and 1 mg/l) or b1, b2, b3) and Ms basal medium with (NAA (0.5, 1 and 2 mg/l) or a4, a5, a6 + BA (0, 0.5 and 1 mg/l) or b4, b5, b6). After a month, growth (size), weight and callus induction percentage were measured and compared. Considering the above traits, the maximum size of callus (6.41mm) and the most callus induction percentage (93%) were obtained at 2,4-D (2mgl-1)+kin (0.5mgl-1) while the highest callus weight was obtained at NAA (1mgl-1) + BA (0.5mgl-1).Combined hormones (2mg/l 2,4-D + 0.5 mg/l kin) and (2mg/l NAA + 0.5mg/l BA) in two media, MS and B5, along with three antioxidants (PVP, PVPP and PVP + PVPP), totally 12 treatments, were evaluated within four consecutive weeks under broth condition and cell suspension establishment. According to the results, significant differences were found (p< 0.05) among the factors affecting cell dry weight while these factors had no significant effect on fresh weight. The highest fresh and dry weights were obtained at B5 medium with PVP (0.1) (1.6940 gr). Fresh and dry weight of cells showed an increasing trend during the consecutive weeks.
Keywords
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