To cite package ‘qtlpoly’ in publications use:

  Pereira G, Gemenet D, Mollinari M, Olukolu B, Wood J, Diaz F,
  Mosquera V, Gruneberg W, Khan A, Buell C, Yencho G, Zeng Z (2020).
  “Multiple QTL mapping in autopolyploids: a random-effect model
  approach with application in a hexaploid sweetpotato full-sib
  population.” _Genetics_, *215*(3), 579-595.
  doi:10.1534/genetics.120.303080
  <https://doi.org/10.1534/genetics.120.303080>, Open Access,
  <https://doi.org/10.1534/genetics.120.303080>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Multiple QTL mapping in autopolyploids: a random-effect model approach with application in a hexaploid sweetpotato full-sib population},
    author = {Guilherme da Silva Pereira and Dorcus C. Gemenet and Marcelo Mollinari and Bode Olukolu and Joshua C. Wood and Federico Diaz and Veronica Mosquera and Wolfgang J. Gruneberg and Awais Khan and C. Robin Buell and G. Craig Yencho and Zhao-Bang Zeng},
    year = {2020},
    journal = {Genetics},
    volume = {215},
    number = {3},
    pages = {579-595},
    doi = {10.1534/genetics.120.303080},
    note = {Open Access},
    url = {https://doi.org/10.1534/genetics.120.303080},
  }