I should state that by the accidental fall of a large bush in
the greenhouse, several plants in both the series were much injured.
These were at once measured together with their opponents and afterwards
thrown away. The others were left to grow to their full height, and were
measured when in flower. This accident accounts for the small height of
some of the pairs; but as all the pairs, whether only partly or fully
grown, were measured at the same time, the measurements are fair.
The average height of the twenty-six crossed plants in the sixteen pots
of the two series is 63.29, and that of the twenty-six self-fertilised
plants is 41.67 inches; or as 100 to 66. The superiority of the crossed
plants was shown in another way, for in every one of the sixteen pots a
crossed plant flowered before a self-fertilised one, with the exception
of Pot 6 of the second series, in which the plants on the two sides
flowered simultaneously.
TABLE 6/88. Nicotiana tabacum. Plants raised from two plants of the
third self-fertilised generation in Pots 2 and 5, in Table 6/87.
Heights of plants measured in inches.
Column 1: Number (Name) of Pot.
Column 2: Kew-crossed Plants, pot 2, Table 6/87.
Column 3: Plants of the fourth Self-fertilised generation, pot 2, Table
6/87.
Column 4: Kew-crossed Plants, pot 5, Table 6/87.
Column 5: Plants of the fourth Self-fertilised generation, pot 5, Table
6/87.
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