These plants, without being
disturbed, were soon afterwards turned into the open ground. By the
autumn the crossed plant had grown to so large a size that it almost
smothered the two self-fertilised plants, which were mere dwarfs; and
the latter died without maturing a single pod. Several self-fertilised
seeds had been planted at the same time separately in the open ground;
and the two tallest of these were 33 and 32 inches, whereas the one
crossed plant was 38 inches in height. This latter plant also produced
many more pods than did any one of the self-fertilised plants, although
growing separately. A few flowers on the one crossed plant were crossed
with pollen from one of the self-fertilised plants, for I had no other
crossed plant from which to obtain pollen. One of the self-fertilised
plants having been covered by a net produced plenty of spontaneously
self-fertilised pods.
CROSSED AND SELF-FERTILISED PLANTS OF THE SECOND GENERATION.
From crossed and self-fertilised seeds obtained in the manner just
described, I succeeded in raising to maturity only a pair of plants,
which were kept in a pot in the greenhouse. The crossed plant grew to a
height of 33 inches, and the self-fertilised to that of 26 1/2 inches.
The former produced, whilst still kept in the greenhouse, eight pods,
containing on an average 2.77 seeds; and the latter only two pods,
containing on an average 2.
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