CROSSED AND SELF-FERTILISED PLANTS OF THE SECOND GENERATION.
Flowers on the crossed plants of the last generation (Table 2/1) were crossed by pollen from distinct plants of the same generation; and flowers on the self-fertilised plants were fertilised by pollen from the same flower. The seeds thus produced were treated in every respect as before, and we have in Table 2/2 the result.
TABLE 2/2. Ipomoea purpurea (Second Generation.).
Heights of Plants in inches:
Column 1: Number (Name) of Pot.
Column 2: Crossed Plants.
Column 3: Self-fertilised Plants.
Pot 1 : 87 : 67 4/8. Pot 1 : 83 : 68 4/8. Pot 1 : 83 : 80 4/8.
Pot 2 : 85 4/8 : 61 4/8. Pot 2 : 89 : 79. Pot 2 : 77 4/8 : 41.
Total : 505 : 398.
Here again every single crossed plant is taller than its antagonist. The self-fertilised plant in Pot 1, which ultimately reached the unusual height of 80 4/8 inches, was for a long time taller than the opposed crossed plant, though at last beaten by it. The average height of the six crossed plants is 84.16 inches, whilst that of the six self-fertilised plants is 66.33 inches, or as 100 to 79.