Summary
Diploid hybrids between Hordeum chilense and three other species, namely H. vulgare, H. bulbosum and Secale cereale, are described together with the amphidiploid of H. chilensexH. vulgare. Both the diploid hybrid and the amphidiploid of H. chilensexH. vulgare were chromosomally unstable, H. chilensexH. bulbosum was less so, while H. chilensexS. cereale was stable. Differential amphiplasty was found in all combinations. No homoeologous pairing was found in the Hordeum hybrids but in H. chilensexS. cereale there was chromosome pairing both within the two genomes and between the genomes.
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References
Cook R, York PA (1981) Genetics of resistance to Heterodera avenae and Meloidogyne naasi. In: Proc 4th Int Barley Genet Symp, Edinburgh 1981, pp 418–424
Dvořák J (1977) Effect of rye on homoeologous chromosome pairing in wheat x rye hybrids. Can J Genet Cytol 19:549–556
Finch RA, Bennett MD (1980) Mitotic and meiotic chromosome behaviour in new hybrids of Hordeum with Triticum and Secale. Heredity 44:201–209
Levan A (1942) Studies on the meiotic mechanism of haploid rye. Hereditas 28:177–211
Martin A, Chapman V (1977) A hybrid between Hordeum chilense and Triticum aestivum. Cereal Res Commun 5:365–368
Martin A, Sanchez-Monge Laguna E (1982) Cytology and morphology of the amphiploid Hordeum chilensexTriticum turgidum conv. durum. Euphytica 31:261–267
Padilla JA, Martin A (1983) Morphology and cytology of Hordeum chilensexH. bulbosum hybrids. Theor Appl Genet 65:353–355
Pickering RA (1979) Further investigations on partial incompatibility in crosses between Hordeum vulgare L. and H. bulbosum L. In: Proc Conf Broadening Genet Base Crops. Pudoc, Wageningen, pp 319–325
Pickering RA, Hayes JD (1976) Partial incompatibility in crosses between Hordeum vulgare L. and H. bulbosum L. Euphytica 25:671–678
Sanchez-Monge Laguna E, Martin A (1982) Hordeum chilensexHordeum vulgare hybrids. Z Pflanzenzucht 89:115–120
Subrahmanyam NC, Azad AA (1978) Nucleoli and ribosomal RNA cistron numbers in Hordeum species and interspecific hybrids exhibiting suppression of secondary constriction. Chromosoma 69:265–273
Thomas HM, Pickering RA (1983a) Chromosome elimination in Hordeum vulgarexH. bulbosum hybrids. 1. Comparisons of stable and unstable amphidiploids. Theor Appl Genet 66:135–140
Thomas HM, Pickering RA (1983b) Chromosome elimination in Hordeum vulgarexH. bulbosum hybrids. 2. Chromosome behaviour in secondary hybrids. Theor Appl Genet 66:141–146
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Communicated by R. Riley
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Thomas, H.M., Pickering, R.A. Comparisons of the hybrids Hordeum chilensexH. vulgare, H. chilensexH. bulbosum, H. chilensexSecale cereale and the amphidiploid of H. chilensexH. vulgare . Theoret. Appl. Genetics 69, 519–522 (1985). https://doi.org/10.1007/BF00251097
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DOI: https://doi.org/10.1007/BF00251097