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GrainGenes Reference Report: TAG-91-611

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Reference	TAG-91-611
Title	Characterization of deletions in common wheat induced by an Aegilops cylindrica chromosome: detection of multiple chromosome rearrangements
Journal	Theoretical and Applied Genetics
Year	1995
Volume	91
Pages	611-617
Author	Hohmann U Endo T Herrmann R Gill B
Abstract	An Aegilops cylindrica chromosome induces terminal deletions of chromosomes in wheat as identified by C-banding. We are constructing high-density physical maps of wheat chromosomes and have detected additional chromosome rearrangements. Among 63 lines with chromosomal subarm deletions in group 7 chromosomes, 7 lines (11.1%) were shown to harbor additional chromosome rearrangements. Two other lines were also omitted from the physical mapping because of the nature of the breakpoint calculations. The presence or absence of chromosome-specific restriction fragment length polymorphism (RFLP) or random amplified polymorphic DNA (RAPD) markers indicated that additional interstitial deletions are present in 3 lines (4.8%) with deletions in the short chromosome arms and in 4 lines (6.3%) with deletions in the long chromosome arms. We also used chromosome pairing analysis of F1 plants of deletion lines with double ditelosomic lines of 'Chinese Spring' wheat to detect small terminal deletions. The deletion of the most distal 1% of chromosome arm 7AL was associated with a pairing reduction of 60%.
Keyword	[ Hide all but 1 of 15 ] addition-lines aegilops cylindrica chromosome chromosome-banding chromosome-maps chromosome-pairing chromosome-polymorphism deletion genetic markers interspecific-hybridization interstital-deletions molecular-mapping random-amplified-polymorphic-dna restriction fragment length polymorphism triticum aestivum

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