Summary
A research has been carried out on possible differences in developmental rate or growth rate of ovules, embryos and endosperms after prickle pollination and after selfing of Brassica oleracea plants. After prickle pollination ovules, embryos and endosperms developed/grew slower than after selfing which may be attributed to certain disturbances in the embryosac. After prickle pollination embryos and endosperms occurred with possible a rather high ploidy level suggesting that diploid embryosacs were present.
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Eenink, A.H. Matromorphy in Brassica oleracea L. VI. Research on ovules, embryos and endosperms after prickle pollination. Euphytica 24, 33–43 (1975). https://doi.org/10.1007/BF00147166
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DOI: https://doi.org/10.1007/BF00147166