University of Isfahan Taxonomy and Biosystematics 3115-9001 6 21 2014 12 22 Chromosome number reports in Astragalus sect. Onobrychoidei (Fabaceae) from Iran گزارش عدد کروموزومی از جنس Astragalus بخش Onobrychoide از تیره Fabaceae در ایران 71 82 17538 EN Massoud Ranjbar Department of Biology, Faculty of Sciences, Bu-Ali Sina University, Hamedan, Iran Anahita Hadidchi Department of Botany, Faculty of Biosciences, Shahid Beheshti University, Tehran, Iran Hossein Riahi Department of Botany, Faculty of Biosciences, Shahid Beheshti University, Tehran, Iran Journal Article 2016 06 14 In this study, original mitotic chromosome counts have been presented for 10 populations belonging to 6 species of Astragalus sect. Onobrychoidei: A. aduncus, A. arguricus, A. cancellatus, A. lilacinus and A. vegetus. All taxa were diploid and possessed 2n = 2x = 16 chromosome number, consistent with the proposed base number of x = 8. In addition, meiotic studies revealed chromosome number of 2n = 2x = 16 for A. aduncus21 and A. brevidens and also 2n = 4x = 32 for A. vegetus99. Although this taxon displayed regular bivalent pairing and chromosome segregation at meiosis, some abnormalities were observed. https://tbj.ui.ac.ir/article_17538_33dc6699eb45ee93d72d757150026031.pdf