An important new diploid Avena species discovered on the Canary Islands
- 1 April 1973
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 51 (4) , 759-762
- https://doi.org/10.1139/b73-095
Abstract
Avena canariensis sp. nov., 2n = 14, is described from the Canary Islands. Its spikelets have non-disarticulating upper florets and bidentate lemmas, suggesting the evolutionary sequence: A, canariensis (2x) → A. magna (4x) → A. sterilis (6x). Hence it is a putative ancestor of the 6x cultivated oats. The karyotype consists of two pairs of satellited chromosomes, four pairs with median and one pair with submedian centromeres, suggesting affinity with the A genome diploid avenas. It was found on a diversity of natural and disturbed sites in the uplands of Fuerteventura, but not as a weed of field crops.Keywords
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