All
these flowers of both lots produced fine capsules. Ten of the crossed
capsules contained by weight 38.92 grains of seeds, and ten of the
self-fertilised capsules 37.74 grains; or as 100 to 97. Some of these
seeds in an equal state of germination were planted in pairs on the
opposite sides of five large pots. A good many of the crossed seeds
germinated before the self-fertilised, and were of course rejected. The
plants thus raised were measured when several of them were in full
flower.
TABLE 6/85. Nicotiana tabacum (second generation).
Heights of plants measured in inches.
Column 1: Number (Name) of Pot.
Column 2: Crossed Plants.
Column 3: Self-fertilised Plants.
Pot 1 : 14 4/8 : 27 6/8.
Pot 1 : 78 4/8 : 8 6/8.
Pot 1 : 9 : 56.
Pot 2 : 60 4/8 : 16 6/8.
Pot 2 : 44 6/8 : 7.
Pot 2 : 10 : 50 4/8.
Pot 3 : 57 1/8 : 87 (A).
Pot 3 : 1 2/8 : 81 2/8 (B).
Pot 4 : 6 6/8 : 19.
Pot 4 : 31 : 43 2/8.
Pot 4 : 69 4/8 : 4.
Pot 5 : 99 4/8 : 9 4/8.
Pot 5 : 29 2/8 : 3.
Total : 511.63 : 413.75.
The thirteen crossed plants here average 39.35, and the thirteen
self-fertilised plants 31.82 inches in height; or as 100 to 81. But it
would be a very much fairer plan to exclude all the starved plants of
only 10 inches and under in height; and in this case the nine remaining
crossed plants average 53.
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