S. brevicaule is a wild relative of the domesticated potato and is native to the Bolivian Andes. Plants are similar in size and form to domesticated potatoes, but the tubers are small, ranging from about 3 inches long to much less than an inch. Most are russets. Tubers have an intensely bitter aftertaste, indicating that they are high in glycoalkaloids. They should not be considered safe to eat unless you are able to calculate the maximum TGA level of the tubers vs. the amount that is safe for your body weight. The main use of S. brevicaule is in breeding programs to introduce wild traits to domesticated potatoes, particularly resistance to Globodera spp. and possibly frost resistance. I have found it useful for crossing with domesticated diploid potatoes to introduce dormancy, although it usually comes along with unwanted baggage like long stolons and high glycoalkaloids, necessitating repeated backcrosses. Our wild potatoes are not fully isolated, so while most of the seeds will be purely S. brevicaule, some may be crossed with other wild or domesticated potatoes. Any that are crossed may well turn out to be the most interesting of the batch. S. brevicaule has an endosperm balance number of 2, so will generally need to be crossed to diploid potatoes in order to introduce traits to tetraploids, although we have also had some success making crosses directly to tetraploids.
25 seeds collected from mixed varieties or 3 tubers. The tubers may be of more than one variety or all the same.