Crop-weed hybrids are more frequent for the grain amaranth 'Plainsman' than for 'D136-1'

David M. Brenner, William G. Johnson, Christy L. Sprague, Patrick J. Tranel, Bryan G. Young

Research output: Contribution to journalArticlepeer-review


White-seeded cultivated amaranth [Amaranthus caudatus L., A. cruentus L., and A. hypochondriacus L.] grain is less valuable if contaminated with brown off-type seeds from the hybrid weedy progeny of spontaneous crop-weed crossing. Crop-weed crossing frequency was estimated by using two grain amaranth cultivars. Both cultivars were planted at the same nine locations in the Midwest United States and exposed to pollen from local weedy Amaranthus species. Harvested seeds were grown in a greenhouse, and the frequency of crop-weed hybrids was determined by observing dominant weed traits in the progeny. The cultivar 'Plainsman' was approximately tenfold more likely to hybridize with weedy amaranths than was 'D136-1'. These are the first amaranth cultivars to be evaluated in this way. The reduced hybridization potential of 'D136-1' or similar material can be exploited to reduce the occurrence of off-type seed contamination in grain amaranths.

Original languageEnglish (US)
Pages (from-to)2201-2205
Number of pages5
JournalGenetic Resources and Crop Evolution
Issue number8
StatePublished - Dec 2013


  • Amaranthus
  • Crop wild hybrid
  • Cross pollination
  • Gene flow
  • Genetic purity
  • Pollen isolation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Agronomy and Crop Science
  • Genetics
  • Plant Science


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