| Family1 | Species1 | Family2 | Species2 | SCUS score | Similarity |
| Solanaceae | Nicotiana attenuata | Poaceae | Setaria italica | 4.35 | Dis similar |
| Solanaceae | Nicotiana attenuata | Poaceae | Setaria viridis | 4.30 | Dis similar |
| Solanaceae | Nicotiana attenuata | Solanaceae | Solanum lycopersicum | 9.29 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Solanaceae | Solanum melongena | 9.30 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Solanaceae | Solanum pennellii | 9.26 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Solanaceae | Solanum tuberosum | 9.53 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Poaceae | Sorghum bicolor | 4.56 | Dis similar |
| Solanaceae | Nicotiana attenuata | Chenopodiaceae | Spinacia oleracea | 9.22 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Asteraceae | Tagetes erecta | 2.99 | Dis similar |
| Solanaceae | Nicotiana attenuata | Malvaceae | Theobroma cacao | 9.12 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Poaceae | Triticum aestivum | 4.39 | Dis similar |
| Solanaceae | Nicotiana attenuata | Poaceae | Triticum dicoccoides | 4.25 | Dis similar |
| Solanaceae | Nicotiana attenuata | Fabaceae | Vigna angularis | 9.14 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Fabaceae | Vigna radiata var. radiata | 9.20 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Fabaceae | Vigna unguiculata | 9.17 | Highly Similar |
| Solanaceae | Nicotiana attenuata | Poaceae | Zea mays | 4.60 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Fabaceae | Abrus precatorius | 8.84 | Similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Aegilops tauschii subsp. strangulata | 4.12 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Brassicaceae | Arabidopsis lyrata subsp. lyrata | 5.09 | Moderately similar |
| Solanaceae | Nicotiana sylvestris | Brassicaceae | Arabidopsis thaliana | 4.94 | Dis similar |