Panama disease new, already infected plant is fairly high. Finally, the disease is known to infect certain weeds without showing symptoms, meaning it can survive in the absence of banana plants and remain undetected in a place where bananas are planted later. FOC is thought to persist only asexually, as a teleomorph or sexual phase has not been found and no recombinant genotypes have been observed. This means that the survival and dispersal of the disease relies on purely asexual spores and structures. The disease survives in chlamydospores which are produced as the plant dies and can survive in the soil for
Crop art mosaic portraits by Lillian Colton are also examples. Her seed portraits of celebrities were exhibited in the strictly defined "Crop art" category at the Minnesota State Fair beginning in 1966. Rules for entry of Crop art allow "only seeds from Minnesota-grown farm crops or cultivated garden flowers, fruits, and vegetables" with no wild plant seeds permitted. Colton continued to teach and make Crop art until her death at age 95 in 2007 (Sheehy 2). A new generation of Crop, or Seed artists, known as the "Postmodern School of Minnesota Crop Art" (Sheehy 90) is continuing this folk tradition. Some of