Category Archives: potato (Solanum tuberosum)

Potato: Glycoalkaloid Toxicity

Introduction All things are poison, and nothing is without poison, the dosage alone makes it so a thing is not a poison. -Paracelsus Potatoes are poisonous.  You probably knew that if you are reading this blog, but it would be understandable if you had missed this fact throughout the years that you have been shoveling […]

Potato: Morphological Observations of USDA Accessions 2017

This post is not really meant to be read start to finish.  The intent is that it will be picked up by search engines so that breeders and researchers working with these accessions in the future can find this information. We use accessions supplied by the USDA in some of our breeding work.  This report […]

Potato: What You Should Know About Fruits on Your Potato Plants

In 2017, many areas of the US have experienced unusually wet and cool weather.  As a consequence, a lot of people have reported seeing something unusual: potato berries.  They look like small, usually green tomatoes growing on your potato plants.  These are known variously as seed balls, potato apples, potato tomatoes, or simply as berries, […]

Potato: Color Genetics

For many crops, you don’t have to search very far to find a nice summary chart of the major genes involved in economically important traits.  This kind of information makes breeding decisions a lot easier.  Knowledge of the genetics underlying traits allows the breeder to identify varieties that are homozygous for a particular trait and […]

Potato: A Summary of Wild Species and Their Qualities

This is one of those posts that is as much for my reference as anyone else’s.  Surprisingly, it is hard to find a simple list of all the wild potato species and their known uses in potato breeding.  This is likely to be a living post, which will be updated as I learn more about […]

Potato: A Ploidy Primer

Introduction How Seeds are Formed Domesticated and Wild Potatoes Ploidy Monoploid and Haploid Numbers Haploids Interactions of Ploidy in Crosses Unreduced (2n) Gametes Endosperm Ratio Endosperm Balance Number A Final Note on Probability Determining Ploidy Morphological Evalutation Guard Cell Counts Chromosome Counts This is probably not a finished work yet.  I have been puttering away […]

About My Potato Breeding Projects

Because we sell excess seed from my potato breeding projects, we get a lot of questions about what my goals are.  Those goals are sometimes hard to articulate because I haven’t thought through them as clearly as I have done for the other plants that I work with.  My work with potatoes goes back before […]

Summer heat and Andean crops

This was a pretty normal year on the coast of Washington.  We had a cool winter, a cool spring, a cool summer, and so far, we’re having a cool fall.  We’re close enough to the ocean that the temperature of the Pacific just off shore is a much better predictor of our temperatures than anything […]

Potatoes: First 2013 potatoes from seed

I have been swapping potato seed with other growers for a while now and there is always a hunger for pictures and information about the seeds that I offer.  I’m trying to get a little better at documenting the new varieties as they come out of the ground.  Maybe this blog will help me to […]