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Wheat Information Service
Number 92:30-31 (2001)
Genetic stocks


Seeds of newly-synthesized allopolyploids of Aegilops and Triticum and of their parental plants

Hakan Ozkan¹ and Moshe Feldman<sup>2

1</sup>Department of Field Crops, Faculty of Agriculture, University of Cukurova, Adana 01330, Turkey
²Department of Plant Sciences, The Weizmann Institute of Science, Rehovot, 72100, Israel


During the course of our studies on the effect of allopolyploidy on genome evolution in wheat, we produced a large number of different allopolyploids. Single plants used as parents were bagged and selfed so that the genotype of the synthetic allopolyploids can be traced to specific parental plants. The allopolyploids were produced by colchicine treatment and following treatment, plants were grown in the greenhouse until maturity and all spikes were bagged. Three allopolyploids were derived from spontaneous formation of unreduced gametes on F₁ plants that were not treated with colchicine. All in all, twenty-three different allopolyploids were obtained (Table 1) of which 10 are "Natural", i.e., they have a genomic combination that exists in nature, and the remainder 13 are "Non-Natural" having a genomic combination that does not exists in nature (Table 1). Chromosome number was determined in all the newly synthesized allopolyploids and only those having the expected euploid chromosome number were harvested. Small samples of seeds, S₂, S₃, and S₄ of all these 23 allopolyploids and of their parental plants are available upon request from the senior author (Hakan Ozkan).

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