Abstract
We studied some features of the development of self-fertile 42-chromosome lines on the base of self-pollination progeny of 46-chromosome plants obtained by backcrossing of barley-wheat hybrids Hordeum marinum subsp. gussoneanum Hudson (= H. geniculatum All.) (2n = 28) × Triticum aestivum L. (2n = 42). The stabilization of karyotypes, resulting in 42-chromosome plants of the wheat type was generally completed by generation BC1F10. The plants of all self-pollination progenies, including BC1F10, showed some phenotypic traits characteristic of wild barley. Plants of BC1F10 with the chromosome sets 2n = 42 and 2n = 42 + t were analyzed by RAPD with a set of 115 primers. Fragments of the wild barley genome were detected in RAPD patterns with 19 primers. Cross-hybridization confirmed that these fragments belonged to the wild barley genome. We raised four phenotypically different 42-chromosome lines from grains obtained from plants of generation BC1F10, and these lines proved to be cytogenetically stable and self-fertile when grown in the field.
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Original Russian Text © L.A. Pershina, N.V. Trubacheeva, T.S. Rakovtseva, L.I. Belova, E.P. Devyatkina, L.A. Kravtsova, 2006, published in Genetika, 2006, Vol. 42, No. 12, pp. 1683–1690.
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Pershina, L.A., Trubacheeva, N.V., Rakovtseva, T.S. et al. Features of the formation of self-fertile euploid lines (2n = 42) by self-pollination of the 46-chromosome barley-wheat BC1 hybrid Hordeum marinum subsp. gussoneanum Hudson (= H. geniculatum All.) (2n = 28) × Triticum aestivum L. (2n = 42). Russ J Genet 42, 1422–1427 (2006). https://doi.org/10.1134/S102279540612009X
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DOI: https://doi.org/10.1134/S102279540612009X