In Pot 1 the tallest crossed plant was 8 1/2 inches, and the tallest
self-fertilised 5 inches in height. In Pot 2, the tallest crossed plant
was 6 1/2 inches, and the tallest self-fertilised plant, which consisted
of the white variety, 7 inches in height; and this was the first
instance in my experiments on Mimulus in which the tallest
self-fertilised plant exceeded the tallest crossed. Nevertheless, the
two tallest crossed plants taken together were to the two tallest
self-fertilised plants in height as 100 to 80. As yet the crossed plants
were superior to the self-fertilised in fertility; for twelve flowers on
the crossed plants were crossed and yielded ten capsules, the seeds of
which weighed 1.71 grain. Twenty flowers on the self-fertilised plants
were self-fertilised, and produced fifteen capsules, all appearing poor;
and the seeds from ten of them weighed only .68 grain, so that from an
equal number of capsules the crossed seeds were to the self-fertilised
in weight as 100 to 40.
CROSSED AND SELF-FERTILISED PLANTS OF THE FIFTH GENERATION.
Seeds from both lots of the fourth generation, fertilised in the usual
manner, were sown on opposite sides of three pots. When the seedlings
flowered, most of the self-fertilised plants were found to consist of
the tall white variety. Several of the crossed plants in Pot 1 likewise
belonged to this variety, as did a very few in Pots 2 and 3.
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