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Showing 2 results for Ghasemzadeh

Zahra Noormohammadi, Bahar Ghasemzadeh, Farah Farahani,
Volume 5, Issue 1 (6-2018)
Abstract

Aloe barbadensis is perennial, monocotyledonous, fleshy plant belongs to Aloaceae family. In this study, somoclonal variations of regenerated A. barbadensis plants were investigated. The plantlets of forth subculture transferred to the soil for further study. The genomic DNAs of 40 regenerated plantlets were extracted and genetic variations were studied using SPAR markers including RAPD and ISSR primers. The amounts of Aloe gel also were extracted from regenerated A. vera plants. Average percentage of polymorphism, Shannon index, Nei's genetic diversity and number of effective alleles based on RAPD data were higher than genetic parameters obtained from ISSR data. NJ cluster and STRUCTURE plot based on molecular markers grouped regenerated plants to distinct clusters. AMOVA analysis also showed a significant (P = 0.01) genetic distinction between studied groups. This result also confirmed differentiation of regenerated plants. The amount of Aloe gel in the four groups (based on clustering method) was compared by using analysis of variance (ANOVA). The results showed no significant (P = 0.746) differences between the amount of gel in four group. In total, our findings showed somaclonal variations on genomic level while no significant differences were observed in amount of gel among regenerated Aloe plantlets.
 
Azarnoosh Jafari, Ameneh Assadi Barbariha, Fereshteh Ghasemzadeh,
Volume 10, Issue 1 (6-2023)
Abstract

The present research, a floristic study was executed on Imamverdy, Dartum, Ghapagh, Garivan and Niestaneh villages, located 30 km south of Bojnourd (North Khorassan province) with altitudinal range of 1442-1783 m. The present study aimed to identify the specimens, their possible medicinal properties, endemism and concervation status. For this purpose, the specimens were collected during March-November 2012 and identified using Flora of Iran and Flora Iranica. The results showed the presence of 133 species from 104 genera and 38 families, one species belonged to Gymnosperms and the rest, 132 species, belonged to Angiosperms, of which five families, 13 genera and 18 species were monocotyledons and 32 families, 90 genera and 114 species were dicotyledons.  Moreover, 40 species were found to have medicinal applications in the studied region. Fabaceae, Brassicaceae, Poaceae, Asteraceae and Lamiaceae were the largest families and Astragalus, Poa, Vicia and Euphorbia were reported as the largest genera in the region. Erysimum koelzii, Astragalus khoshjailensis, Eryngium bungei, Acanthophyllum pachystegium, Sclerorachis platyrachis, Taraxacum hydrophyllum were endemic species for Iran. Astragalus ackerbergensis was found to be in vulnerable status and Rubia florida, Mentha longifolia, Fumaria vaillanti and Onopordum carmanicum were found to be at low-risk status. The maximum and minimum percentages of chorotypes were related to Irano-Turanian with 68.14% and Irano-Turanian, Saharo-Arabian regions with 0.7%, respectively. The maximum and minimum percentage of life form were reported to be hemicryptophytes with 45.8% and cryptophytes with 3%, respectively. The results reflected the cold and arid climate and uncontrolled grazing in the studied region.


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