Cytogenetic analysis of interspecific hybrids in cuphea

D. T. Ray, A. C. Gathman, A. E. Thompson, D. T. Ray

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Seven Cuphea species that are among the most promising for domestication were intercrossed, and nine interspecific hybrids were cytologically characterized. The probability of chiasma formation between a pair of chromosome arms was calculated for each hybrid. Values ranged between 0.39 and 0.78. Estimates of genomic affinities were calculated between species. Hybrids between C. procumbens and C. llavea were fertile and exhibited a high degree of chromosomal homology (genomic affinities being close to 0.95). Other species combinations had genomic affinities between 0.5 and 0.7, and their hybrids were sterile. The hybrid C. leptopoda x C. laminuligera is of considerable interest because it is the first interspecific hybrid between Cuphea species that have major differences in fatty acid percentages.

Original languageEnglish (US)
Pages (from-to)329-332
Number of pages4
JournalJournal of Heredity
Issue number4
StatePublished - Jul 1989

ASJC Scopus subject areas

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


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