title: Chromosome pairing in haploids of Brassica campestris.
abstract: The maximum chromosome pairing observed in haploids of Brassica campestris was two bivalents plus one trivalent but differences were observed in the chromosome pairing frequencies of the four haploids studied. This pairing supports the theorem that the species is hexasomic for one chromosome, tetrasomic for two and disomic for three others but it is emphasized that some of the observed pairing might be explained by a phenomenon other than homology.
authors.affiliation: Research Branch, Agriculture Canada, Ottawa Research Station, Ottawa, Ontario, Canada.
authors.forename: K C
authors.initials: KC
authors.lastname: Armstrong
authors.forename: W A
authors.initials: WA
authors.lastname: Keller