In this case
it is not improbable that some of the parent-plants which were first
self-fertilised may have borne flowers thus coloured; but as several
plants were self-fertilised in the first generation, it is extremely
improbable that all bore flowers of exactly the same tint as those of
the self-fertilised plants of the third generation. The intercrossed
plants of the third generation likewise produced flowers almost, though
not quite so uniform in tint as those of the self-fertilised plants.
Petunia violacea.
In this case I happened to record in my notes that the flowers on the
parent-plant which was first self-fertilised were of a "dingy purple
colour." In the fifth self-fertilised generation, every one of the
twenty-one self-fertilised plants growing in pots, and all the many
plants in a long row out of doors, produced flowers of absolutely the
same tint, namely, of a dull, rather peculiar and ugly flesh colour;
therefore, considerably unlike those on the parent-plant. I believe that
this change of colour supervened quite gradually; but I kept no record,
as the point did not interest me until I was struck with the uniform
tint of the flowers on the self-fertilised plants of the fifth
generation. The flowers on the intercrossed plants of the corresponding
generation were mostly of the same dull flesh colour, but not nearly so
uniform as those on the self-fertilised plants, some few being very
pale, almost white.
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