Meiotic chromosome pairing and irregularities in blueberry interspecific backcross-1 hybrids

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Meiotic chromosome pairing was characterized in three tetraplold (2n = 4x = 48) and three aneuploid(2n = 4x + 1, 4x + 4, and 4x + 5 = 49, 52, and 53) blueberry (Vaocinium corymbosum/ashel) first backcross derivatives. Chromosome configurations principality consisted of bivalents with a low frequency of quadrivalents.One clone exhibited up to four quadrivalents per cell. Extra chromosomes of the aneuploids were generally as univalents and occasionally paired in trivalent associations. Melotic irregularities, including partial desynapsis, anaphase I bridge-fragment(s), extensive chromosome breakage, and asynchronized behavior were noted. Evidence from this study suggests that a minimum of two-thirds of the ashel chromosome complement can pair and recomblne with that of corymbosum.

Original languageEnglish (US)
Pages (from-to)395-399
Number of pages5
JournalJournal of Heredity
Issue number6
StatePublished - 1987

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Molecular Biology
  • Genetics
  • Genetics(clinical)


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