Abstract
The metaphase I association of rye chromosomes was examined both in normal plants (2n = 14) and in plants with rye B chromosomes (2n = 14 + Bs) using the C-banding technique. It was found that B chromosomes (Bs) affect homologous chromosome association. B isochromosomes (iso-Bs) were present in several plants; their presence was deduced, in addition to the morphology of chromosomes at mitosis, from the meiotic association between the two arms of the B and it was confirmed by its C-banding pattern. The strongest increase in rye metaphase association (measured as bound arms) was produced by the presence of the iso-B short (iso-BS) chromosome. The comparison of chromosome association between plants with and without Bs seems to point to the existence of a promoting effect on meiotic chromosome association by Bs, and in particular by the short arm.
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Ayonoadu, V, and Rees, H. 1968. The influence of B chromosomes on chiasma frequencies in black Mexican sweet corn. Genetica, 39, 75–81.
Benavente, E, and Orellana, J. 1989. Pairing competition between metacentric and telocentric chromosomes in autotetraploid rye. Heredity, 62, 327–334.
Cuadrado, M C, Romero, C, and Lacadena, J R. 1988. Interactions between wheat chromosome arms controlling heomeologous pairing and rye B chromosomes. In: Proceedings of the 7th International Wheat Genetics Symposium, Cambridge, England. Miller, T. E. and Koebner, R. M. D. (eds). Institute of Plant Sciences Research, Cambridge, UK, pp. 237–241.
Cruz-Pardilla, M, Vences, F J, Garcia, P, and Perez De La Vega, M. 1989. The effect of B chromosomes on outcrossing rate in a population of rye, Secale cereale L. Heredity, 62, 319–325.
Darlington, C D. 1965. Cytology Part II: Recent Advances in Cytology, 1937–1964. J. and A. Churchill Ltd. London.
Dover, G A, and Riley, R. 1972. Prevention of pairing of homoeologous meiotic chromosomes of wheat by an activity of supernumerary chromosomes of Aegilops. Nature, 240, 159–161.
Fominaya, A, and Orellana, J. 1988. Does differential C-heterochromatin content affect chromosome pairing in octoploid triticale. Heredity, 61, 167–173.
Giraldez, R, and Orellana, J. 1979. Metaphase I bonds, crossing-over frequency and genetic length of specific chromosome arms of rye. Chromosoma, 72, 377–385.
Holm, P B, and Wang, W. 1988. The effect of chromosome 5B on synapsis and chiasma formation in wheat, Triticum aestivum cv. Chinese Spring. Carlsberg Res Comm, 53, 191–208.
Jenkins, G, and Scanlon, M J. 1987. Chromosome pairing in a Lolium temulentum × Lolium perenne diploid hybrid with a low chiasma frequency. Theor Appl Genet, 73, 516–522.
Jones, R N, and Rees, H. 1967. Genotypic control of chromosome behaviour in rye. XI. The influence of B chromosomes on meiosis. Heredity, 22, 333–347.
Jones, R N, and Rees, H. 1982. B Chromosomes. Academic Press, London.
Kishikawa, H. 1977. Effect of the small iso B and deficient B chromosomes on the pairing of standard B chromosomes in rye. Cytologia, 42, 315–322.
Orellana, J, and Giraldez, R. 1981. Metaphase I bound arms and crossing over frequency in rye I. Open pollinated varieties. Chromosoma, 84, 439–449.
Parker, J S, Jones, G H, Edgar, L A, and Whitehouse, C. 1990. The population cytogenetics of Crepis capillaris. III. B-chromosome effects on meiosis. Heredity, 64, 377–385.
Rhoades, M M, and Dempsey, E. 1973. Chromatin elimination induced by the B chromosome of maize. I. Mechanism of loss and the pattern of endosperm variegation. J Hered, 64, 13–18.
Romero, C, and Lacadena, J R. 1980. Interaction between rye B chromosomes and wheat genetic system controlling homeologous pairing. Chromosoma, 80, 33–48.
Tsumoto, L, and Sasaki, M. 1972. Effect of B chromosomes on chiasma frequency of A chromosomes in rye. Wheat Inf Serv, 33–34, 28–30.
Vosa, C G, and Barlow, P W. 1972. Meiosis and B chromosomes in Listera ovata (Orchidaceae). Caryologia, 25, 1–8.
White, J, and Rees, H. 1985. Chromosome specific control of chiasma frequency in rye. Heredity, 55, 421–426.
Zarchi, Y, Simchen, G, Hillel, J, and Schapp, T. 1972. Chiasmata and the breeding system in wild populations of diploid wheats. Chromosoma, 38, 77–94.
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Alvarez, M., Fominaya, A. & de la Vega, M. A possible effect of B-chromosomes on metaphase I homologous chromosome association in rye. Heredity 67, 123–128 (1991). https://doi.org/10.1038/hdy.1991.71
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DOI: https://doi.org/10.1038/hdy.1991.71
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