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Published in Crop Sci 9:1-4 (1969)
© 1969 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Computer Analysis of the Genetic Contamination of Alfalfa Seed1

M. W. Pedersen, R. L. Hurst, M. D. Levin and G. L. Stoker2

The theoretical effect of isolation distance on genetic contamination in alfalfa seed was generated from an exponential equation. This model was used to study the effect of isolation distance, border removal, field size, and field shape on contamination. The method illustrates an approach to the genetic purity problem, but additional data are needed for accurate analysis of seed certification requirements for maintaining a satisfactory level of genetic purity.

Key Words: Certified seed • Isolation distance

1 Contribution from the Crops and Entomology Research Divisions, Agricultural Research Service, U. S. Dep. of Agriculture, and the Utah Agricultural Experiment Station, Logan.

2 Research Agronomist, Crops Research Division, ARS, USDA; Professor, Utah State University, Logan, Utah; Apiculturist, Entomology Research Division, USDA, Tucson Ariz.; and Associate Professor, Plant Science Department, Utah State University and Secretary-Treasurer, Utah Crop Improvement Association, Logan 84321.

Received for publication January 19, 1968.




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