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Published in Crop Sci 13:376-379 (1973)
© 1973 Crop Science Society of America
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Meiotic Irregularities in Hybrids Between Diverse Genotypes of Tall Fescue (Festuca arundinacea, Schreb.)1

G. M. Evans, K. H. Asay and R. G. Jenkins2

Hybrids between American and North African Festuca arundinacea genotypes were characterized by numerous multivalents and univalents at first metaphase of meiosis and, consequently, were sterile. This was most likely due to differences in the arrangement of genetic material in the two parental groups. On the other hand, meiosis in progeny of crosses between American and European (French and Dutch) genotypes was much more regular with only one translocation evident.

The sterility barrier imposed by the karyotypic divergence of American and North African genotypes seriously limits breeding efforts to combine desirable attributes of each. However, the relatively minor difference between European and American stocks should not impose any limitation on then* inclusion in new synthetic varieties.

Key Words: Wide crosses • Plant introductions • Chromosome divergence • Sterility

1 Contribution from the Missouri Agricultural Experiment Station. Journal Series No. 6601, approved Jan. 8, 1973.

2 Visiting Professor from University College of Wales, Associate Professor, and Research Assistant, Department of Agronomy, University of Missouri, Columbia 65201.

Received for publication January 19, 1973.


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M. A. R. Mian, A. A. Hopkins, and J. C. Zwonitzer
Determination of Genetic Diversity in Tall Fescue with AFLP Markers
Crop Sci., May 1, 2002; 42(3): 944 - 950.
[Abstract] [Full Text] [PDF]


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