The Different Forms of Flowers on Plants of the Same Species by Charles Darwin
page 22 of 371 (05%)
page 22 of 371 (05%)
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So that, by all these standards of comparison, the short-styled form is the more fertile; if we take the number of umbels (which is the fairest standard, for large and small plants are thus equalised), the short-styled plants produce more seed than the long-styled, in the proportion of nearly four to three. In 1861 the trial was made in a fuller and fairer manner. A number of wild plants had been transplanted during the previous autumn into a large bed in my garden, and all were treated alike; the result was:-- TABLE 1.3. Column 1: Plant. Column 2: Number of Plants. Column 3: Number of Umbels. Column 4: Weight of Seed in grains. Short-styled cowslips : 47 : 173 : 745. Long-styled cowslips : 58 : 208 : 692. These figures give us the following proportions:-- TABLE 1.4. Column 1: Plant. Column 2: Number of Plants. Column 3: Weight of Seed in grains. ... Column 4: Number of Umbels. Column 5: Weight of Seed in grains. |
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