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Darwin, Charles, 1809-1882

"Effects of Cross and Self Fertilisation in the Vegetable Kingdom"

In the following spring I record in my notes
that in two of the pots the crossed plants are "incomparably the finest
in general appearance," and in all three pots they flowered before the
self-fertilised. When in full flower the tallest flower-stem on each
side of each pot was measured, and the number of the flower-stems on
both sides counted, as shown in Table 6/94. The plants were left
uncovered, and as other plants were growing close by, the flowers no
doubt were crossed by insects. When the capsules were ripe they were
gathered and counted, and the result is likewise shown in Table 6/94.
TABLE 6/94. Primula veris (equal-styled, red-flowered variety).
Heights of plants measured in inches.
Column 1: Number (Name) of Pot.
Column 2: Height of tallest flower-stem: crossed Plants.
Column 3: Number of Flower-stems: crossed Plants.
Column 4: Number of good capsules: crossed Plants.
Column 5: Height of tallest flower-stem: self-fertilised Plants.
Column 6: Number of Flower-stems: self-fertilised Plants.
Column 7: Number of good capsules: self-fertilised Plants.
Pot 1 : 10 : 14 : 163 : 6 4/8 : 6 : 6.
Pot 2 : 8 4/8 : 12 : * : 5 : 2 : 0.
*Several, not counted.
Pot 3 : 7 4/8 : 7 : 43 : 10 4/8 : 5 : 26.
Totals : 26.0 : 33 : 206 : 22.0 : 13 : 32.


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