Seven of eight species in Nicotiana section Suaveolentes have common factors leading to hybrid lethality in crosses with Nicotiana tabacum.

@article{Tezuka2010SevenOE,
  title={Seven of eight species in Nicotiana section Suaveolentes have common factors leading to hybrid lethality in crosses with Nicotiana tabacum.},
  author={Takahiro Tezuka and Tsutomu Kuboyama and Toshiaki Matsuda and Wataru Marubashi},
  journal={Annals of botany},
  year={2010},
  volume={106 2},
  pages={
          267-76
        }
}
BACKGROUND AND AIMS Reproductive isolation is a mechanism that separates species, and is classified into two types: prezygotic and postzygotic. Inviability of hybrids, or hybrid lethality, is a type of postzygotic isolation and is observed in some plant species, including Nicotiana species. Previous work has shown that the Q chromosome, which belongs to the S subgenome of N. tabacum, encodes one or more genes leading to hybrid lethality in some crosses. METHODS Interspecific crosses of eight… 

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