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Published online 1 May 1965
Published in Agron J 57:247-248 (1965)
© 1965 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Effects of Bee Species and Isolation Distance on Possible Varietal Contamination in Alf1

N. R. Bradner, R. V. Frakes and W. P. Stephen2

Synopsis: A recessive marker gene for white flower was used to estimate the distance alfalfa pollinating insects would carry viable pollen. The amount of contaminate pollen disseminated by bees was a function of the bee species, distance, and season. The leaf-cutter bee did not carry pollen away from the base plot as far as the honeybee did. Endemic pollinators carried viable pollen as far as one mile.

1 Contribution from the Departments of Farm Crops, Entomology, Agricultural Experiment Station, Oregon State University, Corvallis, Oregon. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the Ph.D. degree. This study was supported in part by N.S.F. Grant No. G15609. Approved by the Director as Technical paper number 1851.

2 Graduate Research Assistant, Associate Professor, Department of Farm Crops; Associate Profesor, Department of Entomology, respectively.

Received for publication August 12, 1964.




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Copyright © 1965 by the American Society of Agronomy.