“Cuckoo” Aegilops addition chromosome in wheat ensures its transmission by causing chromosome breaks in meiospores lacking it

@article{Finch2004CuckooAA,
  title={“Cuckoo” Aegilops addition chromosome in wheat ensures its transmission by causing chromosome breaks in meiospores lacking it},
  author={Rick A. Finch and Terry Miller and Michael D. Bennett},
  journal={Chromosoma},
  year={2004},
  volume={90},
  pages={84-88}
}
In monosomic additions of Aegilops sharonensis to Chinese Spring wheat (2n=42 wheat chromosomes + 1 homoeologous group 4 Aegilops chromosome known as 4S1), probably all functional gametes carried one Aegilops chromosome. Such preferential transmission is unusual in monosomic alien additions. Male and female meiosis seemed usually normal, but about 75% of embryo sacs and 28% of pollen grains were visibly abnormal near anthesis. Before the first gametophyte mitosis, up to about 13% of megaspores… CONTINUE READING
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