Archive | potato (Solanum tuberosum)

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Potato: A Cytoplasm Primer

If it has been a long time since high school biology and you are rusty on the concept of cytoplasm, you can be forgiven.  It’s not something that most of us think about very often, but it is important to potato breeding, so let’s review. Cytoplasm is everything that is inside a cell but outside […]

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potato-berries-on-plant

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, […]

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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 […]

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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 […]

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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 […]

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