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Published in Crop Sci 8:109-111 (1968)
© 1968 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Natural Hybridization of Peanuts, Arachis hypogaea L., in Virginia1

T. W. Culp, W. K. Bailey and R. O. Hammons2

Natural crossing in peanuts (Arachis hypogaea L.) averaged 0.27, 0.09, and 0.23% when measured by counting the hybrids with two marker varieties, at Holland, Va., from 1963 to 1965. Varietal as well as seasonal differences were noted. Highest natural crossing occurred in ‘Tennessee Red,’ 0.40% (range = 0.15 to 0.55%), and the lowest in ‘Virginia Bunch 67,’ 0.10% (range = 0.01 to 0.24%). Natural hybridization in peanuts at Holland is much less than that reported for other areas, but it is sufficient to account for 10 to 544 (4 to 220 plants/acre) "off type" plants/ha, and should be a consideration in maintaining varietal purity at this location.

Key Words: varietal purity • breeding

1 Cooperative investigations of Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, and the Virginia Polytechnic Institute Research Division, Tidewater Research Station, Holland, Va. 23391, and the University of Georgia, College of Agriculture Experiment Stations, Coastal Plain Station, Tifton, Ga.

2 Research Agronomist, Horticulturist, and Geneticist, Crops Research Division, Agricultural Research Service, USDA, Holland, Va.; Beltsville, Md.; and Tifton, Ga.

Received for publication August 10, 1967.




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