University of Isfahan Taxonomy and Biosystematics 3115-9001 2 3 2010 06 22 Taxonomic study of Onobrychis transcaspica V. Nikitin (Fabaceae) in northeastern of Iran with emphasis on altitudinal effect on morphological characters using floristic marker بررسی تاکسونومیک گونهOnobrychis transcaspica V. Nikitin (Fabaceae) در شمال شرق ایران با تاکید بر تأثیر ارتفاع بر ویژگی‌های ریخت‌شناسی با استفاده از مارکر فلوریستیک 25 38 17375 EN Zeinab Toluei Department of Biology, Faculty of Sciences, Bu-Ali Sina University, Hamedan, Iran Morteza Atri Department of Biology, Faculty of Sciences, Bu-Ali Sina University, Hamedan, Iran Massoud Ranjbar Department of Biology, Faculty of Sciences, Bu-Ali Sina University, Hamedan, Iran Journal Article 2016 06 14 Onobrychis Miller is the second largest genus of Fabaceae in Iran with nearly 60 species. These species are used as valuable forage plants. Onobrychis sect. Onobrychis with nearly 15 species in Iran is one of the important sections of the genus. Onobrychis transcaspica V. Nikitin, is one of the species of this section that is distributed in NE of Iran. To determine intraspecific variations in O. transcaspica from taxonomic point of view and effective ecological factor, data were collected using special station method. In this way, four special stations were recognized for O. transcaspica in NE of Iran. Results from floristic data (Floristic composition of each special station) analysis with MVSP software by PCO method, led to identification of 3 separate groups that was indicative of existence of intraspecific diversity. Morphometric data analysis of individual collected from each special station, by using 65 vegetative and reproductive characters, with PCO and UPGMA methods, confirmed 3 mentioned floristic groups. Ecologic data analysis with CCA Method showed the presence of 3 phenoecodeme based on 3 morphologic groups resulting from altitudinal variations. https://tbj.ui.ac.ir/article_17375_6dd9bec29124a541d7f480021780bff2.pdf