Studies in Crataegus. X. A note on the occurrence of diplospory in Crataegus dissona Sarg. (Maloideae, Rosaceae)

1 June 1984

journal article
research article
Published by Canadian Science Publishing in Canadian Journal of Genetics and Cytology

Vol. 26 (3) , 249-252
https://doi.org/10.1139/g84-039

Abstract

The occurrence of diplospory is recorded for the 1st time in the genus Crataegus L. (Rosaceae). It occurs in C. dissona Sarg., a scarce triploid (2n = 51) of the Great Lakes-New England [USA] region. Proof of diplospory is derived from the somatic chromosome count, frequency of trivalents in metaphase I and cytological study of embryo sac development. The majority of apomictic Crataegus studied are aposporous.

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