Table 1.

DDR values, anabasine, and nicotine content of select Nicotiana species

Species	Nicotine : Anabasine, % of total alkaloids1	DDR Value2
N. tabacum	94.8 : 0.3	9.5
N. undulate	95.3 : 1.3	6.7
N. velutina	2.8 : 8.1	2.9

¹Alkaloid content reported by Saitoh et al. (1984)

²DDR values reported by Littleton et al. (2005)