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Vries, Hugo de, 1848-1935

"Species and Varieties, Their Origin by Mutation"

10% Red Indiv.
\ /
1892 Striped Individual
This experiment was begun in the year 1892 with one individual out of a
large lot of striped plants grown from seeds which I had purchased from
a firm in Erfurt. The capsules were gathered separately from this
individual and about 40 flowering plants were obtained from the seeds in
the following year. Most of them had neatly striped flowers, some
displayed broader stripes and spare flowers were seen with one [319]
half wholly red. Four individuals were found with only uniform red
flowers. These were isolated and artificially pollinated, and the same
was done with some of the best striped individuals. The seeds from every
parent were sown separately, so as to allow the determination of the
proportion of uniform red individuals in the progeny.
Neither group was constant in its offspring. But as might be expected,
the type of the parent plant prevailed in both groups, and more strongly
so in the instances with the striped, than with the red ones. Or, in
other words seed-reversions were more numerous among the already
reverted reds than among the striped type itself. I counted 2% reversion
in the latter case, but 24% from the red parents.
Among the striped plants from the striped parents, I found some that
produced bud variations.


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