Systematic study of simple-leaved group of Astragalus sect. Incani DC. in Iran

In this investigation, morphological pollen characteristics of different populations of 5 species belonging to simple-leaved group of Astragalus sect. Incani DC. in Iran were studied. Results showed that all studied taxa formed two groups. In addition, chromosome number and meiotic behavior were studied in 3 populations belonging to two species of this group. All taxa were diploid and had the basic chromosome number of 2n = 2x = 16. Although the taxa represented regular meiosis, but some abnormalities such as laggard and fragmented chromosomes in anaphase/telophase I and II and diakinesis/methaphase I, cytomixis in anaphase/telophase I and II, multipolar cells in telophase II, binucleouli cells in prophase I and bridges in anaphase I and telophase II were obseved.