. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. HYBRIDS 3% are self-fertilised, the latent character reappears in a certain number of the individuals arising from the resulting seeds, a fact which proves that it must have been present, although not outwardly manifest. An exact study of the phenomena of hybridisation was first undertaken by Mendel, an Austrian monk, by considering the behaviour of single pairs of characters only. In one of his earliest experiments he crossed tall and dwarf Peas, the whole of the resulting offspring (first generation) be- in
. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. HYBRIDS 3% are self-fertilised, the latent character reappears in a certain number of the individuals arising from the resulting seeds, a fact which proves that it must have been present, although not outwardly manifest. An exact study of the phenomena of hybridisation was first undertaken by Mendel, an Austrian monk, by considering the behaviour of single pairs of characters only. In one of his earliest experiments he crossed tall and dwarf Peas, the whole of the resulting offspring (first generation) be- ing tall. The seeds produced from these, by self-fertilisation, afforded two classes of in- dividuals, three- quarters being tall and one- quarter dwarf. But of these tall Peas of the second genera- tion (if again self-fertilised) only one-third bred true, the remainder be- having just like the original hybrids of the first generation, and giving rise to tails and dwarfs in the proportion of three to one. The dwarfs in every case bred true. In the second generation of such a cross, then, as regards any one particular pair of charac- ters, half the offspring are pure (one quarter resembling one parent, another quarter the other parent), whilst the other half are impure and bear the characters of both. Representing the tall Pea by T and the dwarf Pea by d, these results can be graphically expressed as follows :. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Fritsch, Felix Eugene, 1879-; Salisbury, E. J. (Edward James), Sir, b. 1886. London, G. Bell and sons ltd.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpl, booksubjectplants
