Formation of integumentary embryos has been revealed in the ovules of the VIR 116 CMS line of sunflower (Helianthus annuus L.) pollinated by H. occidentalis, a perennial wild sunflower species. These embryos are observed within 7–9 days after the pollination in embryo sacs, where the normal fertilization did not occur. The embryos develop from somatic cells of a maternal organism (an integument) and can be one of the reasons of a matroclinal inheritance in interspecies hybrids.
Russian Journal of Developmental Biology – Springer Journals
Published: Dec 2, 2010
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