Abstract
The effect of telomere heterochromatin on metaphase I association of chromosome pair 1R of rye was analyzed in normal diploid plants of rye (2n=14) and in wheat-rye derivatives with the chromosome constitution (0–7)A(0–7)BRR (2n=20, 21 and 22). The C-banding pattern of 1R was variable between plants. In diploid rye the presence or absence of telomeric heterochromatin in 1R does not influence its meiotic pairing. However, in wheat-rye derivatives the presence of telomeric heterochromatin decreases chiasma frequency in the 1R bivalent. This cannot be attributed to interference of heterochromatin with chiasma terminalization. This effect of heterochromatin is most pronounced in heterozygous condition. In plants heterozygous for telomeric C-bands the reduction of pairing is stronger in the short arm than in the long arm of the 1R bivalent.
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Ayonadu, U., Rees, H.: DNA synthesis in rye chromosomes. Heredity 30, 233–240 (1973)
Bennet, M.D., Kaltsikes, P.J.: The duration of meiosis in a diploid rye, a tetraploid wheat and the hexaploid triticale derived from them. Canad. J. Genet. Cytol. 15, 671–679 (1973)
Burnham, C.R., Stout, J.T., Weinheimer, W.E., Knowles, R.V., Philips, R.L.: Chromosome pairing in maize. Genetics 71, 111–126 (1972)
Darlington, C.D., Haque, A.: Organization of DNA synthesis in rye chromosomes. Chromosomes today 1, 102–107 (1966)
Giráldez, R., Cermeño, M.C., Orellana, J.: Comparison of C-banding pattern in the chromosomes of inbred lines and open varieties of rye, Secale cereale L. Z. Pflanzenzüchtg. 83, 40–48 (1979)
Giráldez, R., Orellana, J.: Metaphase I bonds, crossing-over frequency, and genetic length of specific arms of rye. Chromosoma (Berl.) 72, 377–385 (1979)
Jones, J.H.: Giemsa C-banding of rye meiotic chromosomes and the nature of terminal chiasmata. Chromosoma (Berl.) 66, 45–57 (1978)
Kasha, K.J., Burnham, C.R.: The location of interchange breakpoints in barley. II. Chromosome pairing and the intercross method. Canad. J. Genet. Cytol. 7, 620–632 (1965)
Kenneth, M.E., Burnham, C.R.: The behaviour of nonhomologous univalents in double trisomics in maize. Genetics 63, 851–864 (1969)
Lacadena, J.R.: Alloplasmic rye. Cytogenetics considerations about its obtention. Port. Act. Biol., Ser. A, 10, 129–142 (1967)
Lelley, T.: Induction of homoeologous pairing in wheat by genes of rye suppressing chromosome 5B effect. Canad. J. Genet. Cytol. 18, 485–489 (1976)
Lima-de-Faria, A., Jaworska, H.: The relation between chromosome size gradient and the sequence of DNA replication in rye. Hereditas (Lund) 70, 39–58 (1972)
Loidl, J.: C-band proximity of chiasmata and absence of terminalisation in Allium flavum (Liliaceae). Chromosoma (Berl.) 73, 45–51 (1979)
Merker, A.: The cytogenetic effect of heterochromatin in hexaploid triticale. Hereditas (Lund) 83, 215–222 (1976)
Miller, T.E., Riley, R.: Meiotic chromosome pairing in wheat-rye combinations. Genét. Ibérica 24, 241–250 (1972)
Naranjo, T., Lacadena, J.R., Giráldez, R.: Interaction between wheat and rye genomes on homologous and homoeologous pairing. Z. Pflanzenzüchtg. 82, 289–305 (1979)
Riley, R., Chapman, V., Miller, T.E.: The determination of meiotic chromosome pairing. Proc. 4th Int. Wheat Genet. Symp. Columbia, Missouri, 731–738 (1973)
Roupakias, D.G., Kaltsikes, P.J.: The effect of telomeric heterochromatin on chromosome pairing of hexaploid triticale. Canad. J. Genet. Cytol. 19, 543–548 (1977a)
Roupakias, D.G., Kaltsikes, P.J.: Independence of duration of meiosis and chromosome pairing in hexaploid triticale. Canad. J. Genet. Cytol. 19, 345–354 (1977b)
Santos, J.L., Giráldez, R.: The effect of C-heterochromatin in chiasma terminalisation in Chorthippus biguttulus L. (Acrididae, Orthoptera). Chromosoma (Berl.) 70, 59–66 (1978)
Thomas, J.B., Kaltsikes, P.J.: A possible effect of heterochromatin on chromosome pairing. Proc. nat. Acad. Sci. (Wash.) 71, 2787–2790 (1974)
Thomas, J.B., Kaltsikes, P.J.: The genomic origin of the unpaired chromosomes in triticale. Canad. J. Genet. Cytol. 18, 687–700 (1976)
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Naranjo, T., Lacadena, J.R. Interaction between wheat chromosomes and rye telomeric heterochromatin on meiotic pairing of chromosome pair 1R of rye in wheat-rye derivatives. Chromosoma 81, 249–261 (1980). https://doi.org/10.1007/BF00285951
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DOI: https://doi.org/10.1007/BF00285951