@article { author = {}, title = {MEIOTIC STUDIES OF SOME AVENA SPECIES AND POPULATIONS IN IRAN}, journal = {Journal of Sciences, Islamic Republic of Iran}, volume = {14}, number = {2}, pages = {-}, year = {2003}, publisher = {University of Tehran}, issn = {1016-1104}, eissn = {2345-6914}, doi = {}, abstract = {Eleven populations of five Avena species were analysed for meiotic characters including chiasma frequency and distribution as well as chromosomal association and segregation. Plants of a single population of A. eriantha showed the presence of 2n = 14 (diploid) and 2n = 4x = 28 chromosome number. Populations of A. barbata and A. wiestii possessed n = 14, while populations of A. sterilis ssp. ludoviciana possessed 2n = 6x = 42 (hexaploid) chromosome number. Tetraploid and hexaploid species showed diplontic behavior and formed only bivalents. The species and populations studied differed significantly in the frequency of chiasmata. B-chromosomes occurred in some of the species studied. Cytomixis and chromosome elimination led to aneuploid and unreduced pollen mother cell formation in the species studied.}, keywords = {}, url = {https://jsciences.ut.ac.ir/article_31681.html}, eprint = {https://jsciences.ut.ac.ir/article_31681_2225bb8060f5d5c78a26e68475fa4f0d.pdf} }