Word: seedsman
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Dates: during 1940-1949
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Such X-ray mutations have formerly been of interest chiefly to geneticists (TIME, April 14), but the two unusual calendulas caught the eye of David Burpee, astute Philadelphia seedsman, who two years ago introduced a tetra-marigold produced with colchicine, a chromosome-multiplying chemical. Seven years of reselection (with no further irradiation) assured the permanency of the new strains, readied them this year for Burpee's market...
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