Development and structure of hawthorn seeds (Crataegus L.) from species occurring in Poland

Stanisław Pelc, Krystyna Ptak

Abstract


The development, internal and external structure of seeds of Crataegus monogyna Jacq., C. curvisepala Lindm., C. lindmannii Hrabĕt-Uhr., C. oxyacantha L. em. Jacq., C. palmstruchii Lindm., C. macrocarpa Hegetsch were investigated. It was found that the embryo development is specific, and the development of endosperm precedes that of the embryo. In mature seeds of the examined species endosperm is present under the seed coat and the embryo with large cotyledones and radicle is completely immersed in it. The external appearance of the seeds of particular species differs, and on this basis their specific appurtenance may be determined.

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DOI: https://doi.org/10.5586/asbp.1981.064

Journal ISSN:
  • 2083-9480 (online)
  • 0001-6977 (print; ceased since 2016)
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Publisher
Polish Botanical Society