Identification of Unwanted Plant Species (Weeds) among Seeds for Sale

Diagnosing prohibited noxious weed species that cannot be distinguished visually from other desired plant varieties

Unaltered Image by Dinesh Valke

Opportunity

Available for Licensing

IP Status

US Utility Patent Pending

Inventors

Todd Gaines
Eric L. Patterson

Technology Overview

Several Amaranthus species are very common and are prohibited noxious weeds (e.g., palmeri and tuberculatus); these seed species cannot be reliably visually identified from other Amaranthus species (e.g. retroflexus, hybridus, and spinosus). This invention describes a DNA genotyping method to detect either Palmer amaranth or waterhermp in a mixture of bulked Amaranthus seeds.

Investigators at Colorado State University developed a novel assay to identify polymorphisms which identify each of the nine Amaranthus species.  Specifically, this assay is used to detect at minimum one Palmer amaranth seed in 50 seeds, as well as identifying waterhemp at the same ratio. Further, this assay detects regions in Amaranthus species which contain sequence polymorphisms that enable the identification of each of nine Amaranthus species (A. palmeri, A. tuberculatus, A. albus, A. spinosus, A. blitoides, A. arenicola, A. hybridus, A. powellii, and A. retroflexus).

 

Licensing Director

Steve Foster
Steve.Foster@colostate.edu
970-491-7100

Reference No.: 17-051

Benefits
  • Identification of Palmer amaranth at a 1 in 50 seed ratio (or better)
  • Uses reliable, robust industry standard genotyping methodology
  • Assay validated using blind samples

Last updated on October 7, 2019.