Effects of Cross and Self Fertilisation in the Vegetable Kingdom by Charles Darwin
page 290 of 636 (45%)
page 290 of 636 (45%)
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Column 1: Number (Name) of Pot. Column 2: Crossed Plants, May 20, 1868. Column 3: self-fertilised Plants, May 20, 1868. Column 4: Crossed Plants, December 6, 1868. Column 5: self-fertilised Plants, December 6, 1868. Pot 1 : 15 4/8 : 26 : 40 : 44. Pot 2 : 3 : 15 : 6 4/8 : 43. Pot 3 : 8 : 13 4/8 : 16 : 33. Pot 4 : 5 : 5 : 11 4/8 : 11. Total : 31.5 : 59.5 : 74.0 : 131.0. As the plants did not grow to their proper height in the above small pots in Table 6/84, four crossed and four self-fertilised plants were raised from the same seed, and were planted in pairs on the opposite sides of four very large pots containing rich soil; so that they were not exposed to at all severe mutual competition. When these plants were in flower I neglected to measure them, but record in my notes that all four self-fertilised plants exceeded in height the four crossed plants by 2 or 3 inches. We have seen that the flowers on the original or parent-plants which were crossed with pollen from a distinct plant |
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