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Published in Crop Sci 11:592-593 (1971)
© 1971 Crop Science Society of America
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Ploidy Level Distribution of Tall Wheatgrass in Turkey1

Jurgen Schulz-Schaeffer, S. R. Chapman and Margaret Yuan2

A decaploid chromosome level (2n=70, 73) was predominant in 27 plants of Agropyron elongatum (Host) Beauv. from eight locations in Turkey. Octoploidy was detected at only two locations. Natural hybridization between octoploid and decaploid plants was evident for a collection site near Kayseri, Turkey, where one plant with 2n=73 and two plants with 2n=63 were detected. A hexaploid chromosome level detected earlier in collections of this taxon from Turkey was not found in this study.

Key Words: Polyploidy • Euploidy • Aneuploidy • Natural hybridization

1 Contribution of the Plant and Soil Science Department, Montana State University, Bozeman, 59715. Published as Journal Series No. 244, Montana Agricultural Experiment Station. Received

2 Professor of Agronomy and Genetics; Associate Professor of Agronomy and Genetics; and former Graduate Research Assistant, respectively, Montana State University, Bozeman, Montana, 59715.

Received for publication January 19, 1971.




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