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Paper Information

Journal:   JOURNAL OF TAXONOMY AND BIOSISTEMATICS   WINTER 2012 , Volume 3 , Number 9; Page(s) 53 To 63.
 
Paper: 

MEIOTIC CHROMOSOME NUMBER AND BEHAVIOR OF SIX POPULATIONS OF ONOBRYCHIS MELANOTRICHA BOISS. (O. SECT. HELIOBRYCHIS) IN IRAN

 
 
Author(s):  RANJBAR MASSOUD, KHADEMI FATEMEH, KARAMIAN ROYA*
 
* DEPARTMENT OF BIOLOGY, FACULTY OF SCIENCES, BU-ALI SINA UNIVERSITY, HAMEDAN, IRAN
 
Abstract: 

The genus Onobrychis Mill. with about 130 species in 9 sections is one of the most valued legumes distributed mainly in temperate regions of north hemisphere. However, its main centers of diversity are eastern Mediterranean and southwestern Asia. O. sect. Heliobrychis is the largest section of the genus and has nearly 21 species in Iran. In this investigation, the chromosome number and meiotic behavior were studied in 6 populations of O. melanotricha. All taxa were diploid and had the basic chromosome number of 2n=2x=16. Although the taxa represented regular meiosis, some abnormalities such as laggard and fragmented chromosomes in anaphase/telophase I, II and diakinesis/methaphase I, cytomixis in anaphase/telophase I, II, micronucleus in telophase II, multipolar cells in telophase II, bridges in anaphase I and asynchronous nuclei in metaphase II and telophase I and II were observed.

 
Keyword(s): CHROMOSOME NUMBER, MEIOSIS, ONOBRYCHIS, O. SECT. HELIOBRYCHIS
 
References: 
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