Hugo de Vries, Dutch botanist

Hugo de Vries, Dutch botanist

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Credit: AMERICAN PHILOSOPHICAL SOCIETY/SCIENCE PHOTO LIBRARY

Caption: Hugo Marie de Vries (1848-1935), Dutch botanist and geneticist. De Vries was the son of a Dutch prime minister, and studied medicine in Holland and Germany. He was also an accomplished botanist. At Wurzburg he worked on plant turgor (stiffening of the cell walls due to osmotic water uptake), using the term plasmolysis to describe loss of turgidity. He then turned to plant heredity. His breeding experiments with evening primrose led him to a general theory of mutations, an alternative to Darwinian theory. This was later shown to be wrong, due to the complex genetics of the evening primrose, but did much to stimulate experiment and debate in genetics.

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Keywords: 1800s, 1900s, 19th century, 20th century, adult, black-and-white, botanical, botanist, botany, breeding experiments, caucasian, dutch, european, evening primrose, flora, genetic, geneticist, genetics, head and shoulders, historical, history, hugo de vries, hugo m. de vries, hugo marie de vries, human, male, man, monochrome, nature, non-darwinian, one person, people, plant physiologist, plant physiology, plasmolysis, portrait, scientist, theory of mutations, turgidity

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