Fig. 1.

Production of a Solanaceae cybrid plant. Schematic production of a cybrid plant by chemical fusion of protoplasts from an albino mutant line of Nicotiana tabacum (Nt) and a wild type line of Hyoscyamus niger (Hn; Zubko et al., 1996). Green hybrid plants were backcrossed at least four times to wild type Nt (Zubko et al., 1996, 2001). The resulting cybrid plant has green chloroplasts derived from Hn, recombinant mitochondria derived from both parents, and a nuclear genome consisting predominantly of Nt sequences (Zubko et al., 1996). Bars: 5 cm, except top-left panel, 3 cm.