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Further studies inTradescantia virginiana var.humilis andRhoeo discolor

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Summary

  1. 1.

    InTradescantia virginiana var.humilis the following observations were made on meiosis:

  1. (i)

    arrest of terminalisation of chiasmata

  2. (ii)

    pairing of unequal chromosomes

  3. (iii)

    torsion of chromatids

  4. (iv)

    morphological change in chromosome

  5. (v)

    pairing of fragments, discussed in relation to the chiasma theory of metaphase pairing.

  6. 2.

    InRhoeo discolor pachytene, diplotene and diakinesis stages were observed. The metaphase end-to-end pairing of the chromosomes was observed to follow earlier side-by-side pairing of homologous ends.

The observations show that both species obey the general principles of meiosis as recently outlined by Darlington.

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Authors and Affiliations

  1. John Innes Horticultural Institution, London

    P. Ch. Koller

Authors
  1. P. Ch. Koller
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Additional information

This work was carried on while visiting the John Innes Horticultural Institution.

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Koller, P.C. Further studies inTradescantia virginiana var.humilis andRhoeo discolor . Journ. of Genetics 26, 81–96 (1932). https://doi.org/10.1007/BF02991445

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