ISSN:
1439-0523
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
To gain more information about the widely unknown genome constitution of the taxonomically and agronomically interesting wild oat Avena macrostachya, this tetraploid species was crossed (as the pollinator) with several diploid Avena species. Hybridization failed with A. strigosa (As As), A. hirtula (As As), and A. longiglumis (A1 A1), but succeeded with A. atlantica (As As), A. prostrata (Ap Ap), and A. pilosa (Cp Cp). The output of hybrids and the vitality of the F: plants were highest in the combination A. pilosa×A. macrostachya. Hybrids from this cross relatively frequently showed trivalents at metaphase I as compared to the nearly consistent formation of seven univalents and seven bivalents in hybrids with the A genome species A. atlantica and A. prostrata. Altogether, the results confirm an auto-ploid origin of A. macrostachya and demonstrate that among the two known basic genomes A and C of the genus Avena only the latter exhibits considerable homeology to the A. macrostachya genome.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1439-0523.1991.tb00508.x
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