Diversity of chromosome numbers and meiotic studies in genus Anchusa (Boraginaceae) from Iran (10 Nov 2015)

Document Type: Original Research Papers

Authors

Department of Biology, Herbarium division, Bu-Ali Sina University, P.O. Box 65175/4161, Hamedan, Iran

Abstract

The present study reports the chromosome number and meiotic behaviour of 14 populations
belonging to four taxa of Anchusa subgenus Buglossum Gusul. from Iran. All populations
showed the chromosome number 2n= 4x= 32. It is the first meiotic study for A. subg.
Buglossum. We discuss some habit form and evolutionary aspect in the light of cytogenetic
data. The origin of polyploidy (auto-allopolyploidy) were also surveyed. As the result of the
present study and reviewing the chromosome numbers in Anchusa subg. Buglossum and A.
subg. Buglossoides Gusul. in Iran, it can be concluded that polyploidy is the major force
modeling the chromosome evolution within these subgenera. Almost all the studied taxa
displayed regular bivalent pairing and chromosome segregation at meiosis. However, some
meiotic abnormalities observed in different taxa are discussed here.

Keywords

Main Subjects


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