Abstract
Recent developments in the study of aneuploids in barley are reviewed. To date five complete series of primary trisomics have been produced. Considerable progress has been made toward the production of a complete set of monotelotrisomics. Eleven of the possible 14 have thus far been identified though not all in the same genetic background. Studies on existing monotelotrisomics have shown that those representing the long arm frequently resemble the corresponding primary trisomic in gross morphology while short arm counterparts are rarely distinguishable from diploids. The average transmission rate of extra telos through female gametes was 31.9% with all showing a low rate of male transmission. In 81.3% of cells at metaphase 1 of meiosis the extra telos are synapsed with normal homologues to form heteromorphic trivalents. Tandem-chain configurations were the predominant type.
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Based on an address given at the Eighth American Barley Workers Conference held at University of Arizona, Tucson, Jan. 23–27, 1972.
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Fedak, G., Tsuchiya, T. Progress in the study of aneuploids in barley. Genetica 45, 177–190 (1975). https://doi.org/10.1007/BF01517194
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DOI: https://doi.org/10.1007/BF01517194