Meiotic and morphological analysis in Hordeum pubiflorum (sect. Critesion, Triticeae) |
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| Authors: | Claus Baden Henrik J. Kristensen |
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| Affiliation: | Botanical Section. Dept. of Botany, Dendrology and Forest Genetics, Royal Veterinary and Agricultural University Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark;Plant Pathology Section, Dept. of Plant Biology, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark |
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| Abstract: | Morphological and hybridization studies were carried out in H. pubiflorum s. 1. (2n= 14). Chromosome pairing observed at MI in the hybrids was high, but indications of weak sterility barriers were observed. It is concluded that (i) hybridization is fairly easy to perform, and the populations studied belong to the same species, (ii) no divergence in the ssp. halophilum genome was observed, except in (iii) a population with at least one reciprocal translocation, (iv) the halophilum × breviaristatum hybrids had lowered pairing with an increased frequency of univalents, (v) the pairing combined with morphology suggest recognition of H. pubiflorum ssp. breviaristatum (Parodi & Nicora) C. Baden (comb. nov.). |
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