Burley 21 Tobacco
Burley 21 Tobacco
Nicotiana tabacum L
[ Approximately 100 seeds per packet ]
'Burley 21' was developed from a complex series of crosses and back-crosses which included the species Nicotiana longiflora for its resistance to wildfire bacteria, and Nicotiana glutinosa for its resistance to tobacco mosaic virus of the local-lesion type. By the time that it was stabilized and released for planting in 1955, eight generations of selfing had been accomplished. Refer to the informational references tab for information on its development team.
Our seed was originally sent to us by David Pendergrass from Middle Tennessee and originated from USDA accession number PI 552363, which entered their collection in 1961.
- "Development of BURLEY 21, the First Wildfire-resistant Tobacco Variety; Including results of variety trials," by, Howard E. Heggestad, E. E. Clayton, M. O. Neas, H. A. Skoog, Bulletin 321, December, 1960.
- The team of individuals and organizations involved in developing 'Burley 21' include, J. Hugh Felts, Superintendent of the Tobacco Experiment Station, Greeneville, Tennessee, who helped conduct the experimental work; D. R. Bowman and R. N. Jeffrey, Plant Physiologists, Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Knoxville, Tennessee, and Beltsville, Maryland, respectively, for chemical analysis; the American Tobacco Company, the R. J. Reynolds Tobacco Company, and the Liggett & Myers Tobacco Company for quality determinations; the Tobacco Division, Agricultural Marketing Service, USDA, for grading the experimental lots of tobacco; Branch Tennessee Experiment Station superintendents and growers whose cooperation made the variety tests possible; and, to the personnel of the Extension Service who helped evaluate Burley 21.
- The parentage of 'Burley 21' includes the following varieties with backcrosses in the order shown: 'TL 106', 'Kentucky 16', 'Greeneville 5', 'Kentucky 41A', 'Kentucky 56' and 'Greeneville 18'.
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