Investigating the Effects of Number and Frequency of Incisions on Production and Survival of Astragalus keyserlingii
الموضوعات :
Seyyed Morteza Abtahi
1
(Research Division of Natural Resources, Isfahan Agricultural and Natural
Resources Research and Education Center, AREEO, Isfahan)
Karim Bagherzadeh
2
(Faculty member, Isfahan Agricultural and Natural Resources Research and Education Center, AREEO,
Isfahan)
Ehsan Zandi Esfahan
3
(Rangeland Research Division, Research Institute of Forests and Rangelands, Tehran)
الکلمات المفتاحية: Gum tragacanth, Incision, Number of harvests, Astragalus,
ملخص المقالة :
Tragacanth Gum is one of the most important medicinal and industrial productsof rangelands and is obtained from the incision of gum tragacanth-producing Astragalusincluding Astragalus keyserlingii. The conservation of Astragalus species in rangelandshas a special place in terms of economic profit and soil conservation. The increase in priceof gum tragacanth in recent years and more attention of beneficiaries to the extraction ofthis material from the existing Astragalus in the rangelands could cause the destruction ofAstragalus species producing gum tragacanth. This research was aimed to provide ascientific method for the exploitation of gum tragacanth as well as the conservation thisspecies. The study was conducted in Tiran, Isfahan province, Iran using a split plot designin the layout of a completely randomized blocks design with three replications. Eachreplication included 30 shrubs that were exploited for the first time. Treatments includedthe number of incisions and harvests. The traits were gum tragacanths production, the plantmortality percent and canopy cover percent. According to the obtained results, the numberof harvests had a negative effect on canopy cover. This result clearly shows that this plantis resistant against the incision since it has maximum canopy cover percent even underthree-time incision in the sixth year. The highest mortality equivalent to 53% was recordedin six-time harvest and the highest production was obtained for six-time harvest a year withan average value of 156.9 g per 30 shrubs, having no significant difference with the fourtime one a year. Overall, two scars and four-time harvest could be recommended for theexploitation of A. keyserlingii.Key
Literature Cited
Ahmadi Gavlighi, H., 2012. Tragacanth Gum: Structural Composition, Natural Functionality and Enzymatic Conversion as Source of Potential Prebiotic Activity. Ph.D. Thesis, DTU chemical engineering, technical university of Denmark.
Asadian, Gh. and Barati, A., 2006. Investigation of effect of number and type of incision in different times on amount of gum tragacanth production in white milk-vetch (Astragalus gossypinus). Pajouhesh & Sazandegi, 70: 40-33. (In Persian).
Asadian, Gh., Kolahchi, N. and Sadeghimanesh, M. R., 2008. An investigation on the effect and type of construct in different times on amount of gum tracaganth production in yellow milk-vetch (Astragalus parrowianus), Pajouhesh & Sazandegi, 81: 170-175. (In Persian).
Bagherzadeh, K., 2000. Final Report of the National Plan of gum tragacanth-producing Astragalus Detection and diversity of the Isfahan province. Research institute of forests and rangelands Publications. Tehran, Iran. 85p. (In Persian).
FAO. 1995. Gums, resins and latexes of plant origin. (Non-wood forest products 6). FAO, Rome
Ghorbani Nahooji, M., Maassoumi, A. A., Saiadi, A., Kazempour Osaloo, Sh. and Sheikh Akbari Mehr, R., 2012. Phylogeny of Astragalus L. Sect. Hololeuce Bunge and related species based on morphological characters in Iran. Taxonomy and Biosystematics, 12:43-52. (In Persian).
Kolahchi, N., Mohseni Saravi, M., Tavili, A., Jafari, M. and Assadian, Gh., 2011. Evaluation of Interception in Astragalus parrowianus, (Case Study: Gonbad Rangeland of Hamadan Province, Iran). Jour. Rangeland Science, 2(1): 355-369. (In Persian).
Maassoumi, A. A., 2005. The genus Astragalus in Iran, Research institute of forests and rangelands Publications. Tehran, Iran. Vol. 5. (In Persian).
Saffar, M. T. and Razavi, SM., 1993. Project of gum tragacanth in Mousa Abad and Natanz. Administration of natural resources of Isfahan province. (In Persian).
Whistler, R. L., 1993. Exudate gums. In R. L. Whistler & J. N. BeMiller (Eds.), Industrial gums, polysaccharides and their derivatives (pp. 309–339): Academic Press, San Diego.
Yousefzadeh, K., Houshmand, S. and Zamani, G., 2010. Karyotype analysis of Astragalus effusus Bunge (Fabaceae). Caryologia, 63(3): 257-261. (In Persian).
Zargari, A., 1989. Medical Plants, Publication of Tehran University. Tehran, Iran. Vol. 1. (In Persian).
