Evolution of seed dormancy

  title={Evolution of seed dormancy},
  author={G. Mapes and G. Rothwell and M. Haworth},
  • G. Mapes, G. Rothwell, M. Haworth
  • Published 1989
  • Biology
  • Nature
  • Palaeozoic fossil conifer cones bearing mature seeds with well developed cotyledonary embryos have been recovered from Permo-Carboniferous strata of North America. These are the most ancient embryos ever discovered within gymnosperm seeds1,2. In contrast to the pteridophytic ancestors of seed plants and other major groups of Palaeozoic gymnosperms3,4, these embryos indicate that there was a significant delay between fertilization and seed germination in the earliest conifers. We suspect that… CONTINUE READING
    Embryogeny of gymnosperms: advances in synthetic seed technology of conifers
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