Meiosis and fertility in interspecific hybrids of Nicotiana tabacum L. ×N. glauca Grah. and their derivatives

@article{TrojakGoluch2007MeiosisAF,
  title={Meiosis and fertility in interspecific hybrids of Nicotiana tabacum L. ×N. glauca Grah. and their derivatives},
  author={Anna Trojak-Goluch and Apoloniusz Berbe{\'c}},
  journal={Plant Breeding},
  year={2007},
  volume={126},
  pages={201-206}
}
Nicotiana glauca is of potential interest to breeders as it carries resistance to black root rot of tobacco. Cytological investigations of sexual interspecific hybrids of N. tabacum T'T'TT (2n = 4x = 48) cv. 'Wislica' x N. glauca GG (2n - 2x = 24) were carried out. The analyses of chromosome association at diakinesis and metaphase I in the PMCs of amphihaploid F] T'TG (2n = 3x = 36) revealed low variable pairing with 0-5 bivalents. The sterile amphihaploids F 1 were converted into partial… 
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TLDR
The number of univalents and the frequency of PMCs containing unpaired chromosomes indicated that amphidiploids N. tabacum cv.
Potential of Nicotiana glauca (Grah.) as a source of resistance to black root rot Thielaviopsis basicola (Berk. and Broome) Ferr. in tobacco improvement
TLDR
A wide variation in response to black root rot was found for post-sesquidiploids a clear reflection of extensive chromosome segregation in that hybrid generation.
A study of morphology, cytology and sterility in interspecific hybrids and amphidiploids of Nicotiana knightiana X N. umbratica
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