Beitr. Tabakforsch. Int., 1990, 14-6, p. 327-39., ISSN.0173-783X
Alkaloid composition of the Nicotiana species
USDA-ARS, Crops Research. Lab., Oxford, NC, USA.
Plants from 64 Nicotiana species were sampled in the greenhouse in 1983 and 1984 and from the field in 1985 and 1986 for the purpose of developing a chemical profile of each species. Mature green leaves were harvested at flowering, freeze-dried and ground ...