Abstract
Recombination of chromosomes 3A(m) and 5A(m) of Triticum monococcum with closely homeologous chromosomes 3A and 5A of T. aestivum was compared with recombination across corresponding homologous chromosome pairs. Differentiation between the homeologues impacted recombination in the proximal regions of the long arms the most and in the distal regions of the long arms the least. It is concluded that this variation principally reflects allocation of multiple crossovers across an arm and positive crossover interference across chromosome arms. Recombination rates between homeologous chromosomes 5A(m) and 5A differed in the opposite sexes.
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- Dubcovsky J., Luo M. C., Zhong G. Y., Bransteitter R., Desai A., Kilian A., Kleinhofs A., Dvorák J. Genetic map of diploid wheat, Triticum monococcum L., and its comparison with maps of Hordeum vulgare L. Genetics. 1996 Jun;143(2):983–999. doi: 10.1093/genetics/143.2.983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dubcovsky J., Luo M., Dvorak J. Differentiation between homoeologous chromosomes 1A of wheat and 1Am of Triticum monococcum and its recognition by the wheat Ph1 locus. Proc Natl Acad Sci U S A. 1995 Jul 3;92(14):6645–6649. doi: 10.1073/pnas.92.14.6645. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dvorák J., Appels R. Investigation of Homologous Crossing over and Sister Chromatid Exchange in the Wheat Nor-B2 Locus Coding for Rrna and Gli-B2 Locus Coding for Gliadins. Genetics. 1986 Aug;113(4):1037–1056. doi: 10.1093/genetics/113.4.1037. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dvorák J., Chen K. C. Distribution of Nonstructural Variation between Wheat Cultivars along Chromosome Arm 6Bp: Evidence from the Linkage Map and Physical Map of the Arm. Genetics. 1984 Feb;106(2):325–333. doi: 10.1093/genetics/106.2.325. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dvorák J., Dubcovsky J., Luo M. C., Devos K. M., Gale M. D. Differentiation between wheat chromosomes 4B and 4D. Genome. 1995 Dec;38(6):1139–1147. doi: 10.1139/g95-151. [DOI] [PubMed] [Google Scholar]
- Dvorák J., McGuire P. E. Nonstructural Chromosome Differentiation among Wheat Cultivars, with Special Reference to Differentiation of Chromosomes in Related Species. Genetics. 1981 Feb;97(2):391–414. doi: 10.1093/genetics/97.2.391. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gill K. S., Gill B. S., Endo T. R., Boyko E. V. Identification and high-density mapping of gene-rich regions in chromosome group 5 of wheat. Genetics. 1996 Jun;143(2):1001–1012. doi: 10.1093/genetics/143.2.1001. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hohmann U., Endo T. R., Gill K. S., Gill B. S. Comparison of genetic and physical maps of group 7 chromosomes from Triticum aestivum L. Mol Gen Genet. 1994 Dec 1;245(5):644–653. doi: 10.1007/BF00282228. [DOI] [PubMed] [Google Scholar]
- Jiang J., Gill B. S. New 18S.26S ribosomal RNA gene loci: chromosomal landmarks for the evolution of polyploid wheats. Chromosoma. 1994 Jun;103(3):179–185. doi: 10.1007/BF00368010. [DOI] [PubMed] [Google Scholar]
- Kota R. S., McGuire P. E., Dvorák J. Latent Nonstructural Differentiation among Homologous Chromosomes at the Diploid Level: Chromosome 6B of AEGILOPS LONGISSIMA. Genetics. 1986 Oct;114(2):579–592. doi: 10.1093/genetics/114.2.579. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lander E. S., Green P., Abrahamson J., Barlow A., Daly M. J., Lincoln S. E., Newberg L. A., Newburg L. MAPMAKER: an interactive computer package for constructing primary genetic linkage maps of experimental and natural populations. Genomics. 1987 Oct;1(2):174–181. doi: 10.1016/0888-7543(87)90010-3. [DOI] [PubMed] [Google Scholar]
- Luo M. C., Yang Z. L., Dvorák J. Position effects of ribosomal RNA multigene loci on meiotic recombination in wheat. Genetics. 1998 Jun;149(2):1105–1113. doi: 10.1093/genetics/149.2.1105. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Werner J. E., Endo T. R., Gill B. S. Toward a cytogenetically based physical map of the wheat genome. Proc Natl Acad Sci U S A. 1992 Dec 1;89(23):11307–11311. doi: 10.1073/pnas.89.23.11307. [DOI] [PMC free article] [PubMed] [Google Scholar]