Cytoembryological aspects of reduced seed setting in Ranunculus ficaria L. subsp. bulbifer (Marsden-Jones) Lawalrée

Helena Wcisło, Eugenia Pogan

Abstract


Highly disturbed micro- and macro-sporogenesis in R. ficaria L. subsp. bulbifer gives rise to cytologically and genetically unbalanced reproductive cells. In plants from different papulatians, pollen degenerates in various percentages. The majority of apparently normal 7-nucleate ES's undergo abortion. Fertilization occurs sporadically only in ca 7% of ovules. Numerous young achenes undergo degeneration resulting from unviable genotypic combinations. Only 1% of seeds contain multicellular embryos, endosperm tissue and are capable of germination.

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DOI: https://doi.org/10.5586/asbp.1981.040

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