GrainGenes Reference Report: GNM-42-497
Reference
GNM-42-497
Title
Molecular cytogenetic analysis of Aegilops cylindrica host.
Journal
Genome
Year
1999
Volume
42
Pages
497-503
Author
[ Hide all but 1 of 7 ] Linc G Friebe BR Kynast RG Molnar-Lang M Koszegi B Sutka J Gill BS
Abstract
The genomic constitution of Aegilops cylindrica Host (2n = 4x = 28, D(c)D(c)C(c)C(c)) was analyzed by C-banding, genomic in situ hybridization (GISH), and fluorescence in situ hybridization C-banding patterns of the D(c)- and C(c)-genome chromosomes of Ae. cylindrica are similar to those of D-and C-genome chromosomes of the diploid progenitor species Ae. tauschii Coss. and Ae. caudata L., respectively. These similarities permitted the genome allocation and identification of the homoeologous relationships of the Ae. cylindrica chromosomes. FISH analysis detected one major 18S-5.8S-25S rDNA locus in the short arm of chromosome 1C(c). Minor 18S-5.8S-25S rDNA loci were mapped in the short arms of 5D(c) and 5C(c). 5S rDNA loci were identified in the short arm of chromosomes 1C(c), 5D(c), 5C(c), and 1D(c). GISH analysis detected intergenomic translocation in three of the five Ae. cylindrica accessions. The breakpoints in all translocations were non-centromeric with similar-sized segment exchanges.
External Databases
Pubmed: 10382296
Keyword
aegilops
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GrainGenes Reference Report: GNM-42-497
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||