Effects of Cross and Self Fertilisation in the Vegetable Kingdom by Charles Darwin
page 280 of 636 (44%)
page 280 of 636 (44%)
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Pot 6 : 37 4/8 : 56 : 46 4/8. Pot 6 : 61 : 63 5/8 : 29 6/8. Pot 6 : 0 : 57 7/8 : 14 4/8. Pot 7 : 59 6/8 : 51 : 43. Pot 7 : 43 4/8 : 49 6/8 : 12 2/8. Pot 7 : 50 5/8 : 0 : 0. Pot 8 : 37 7/8 : 38 5/8 : 21 6/8. Pot 8 : 37 2/8 : 44 5/8 : 14 5/8. Total : 1051.25 : 1190.50 : 697.88. The twenty-one Westerham-crossed plants now averaged 50.05 inches; the twenty-two intercrossed plants, 54.11 inches; and the twenty-one self-fertilised plants, 33.23 inches in height. We thus get the following ratios:-- The Westerham-crossed plants in height to the self-fertilised as 100 to 66. The Westerham-crossed plants in height to the intercrossed as 100 to 108. The intercrossed plants in height to the self-fertilised as 100 to 61. We here see that the Westerham-crossed (the offspring of plants self-fertilised for four generations and then crossed with a fresh stock) have gained greatly in height, since they were first measured, |
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