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GrainGenes Reference Report: TAG-104-786

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Reference	TAG-104-786
Title	Investigation of crossover interference in barley (Hordeum vulgare L.) using the coefficient of coincidence
Journal	Theoretical and Applied Genetics
Year	2002
Volume	104
Pages	786-796
Author	Esch E Weber WE
Abstract	Summary: Interference, the interaction between recombination events, was analysed in seven mapping populations of barley (Hordeum vulgare L.). The coefficient of coincidence was applied to investigate the type and position of interference within the genome. Interference was analysed with respect to dependence on the recombination fraction, and simulations were used to obtain test statistics which consider the small sample size of 71-150 double haploid lines. In addition to positive interference in intermediate intervals, strong negative interference, i.e. encouraged double recombination, was found in short intervals. The relationship between recombination fraction and interference could not be described with a uniform function, neither for the entire genome nor for individual chromosomes. The analysis of the position of interference within the genome revealed that interference does not act in the same way in the whole genome. Intervals spanning the centromere exhibited significantly higher means for the coefficient of coincidence than intervals within the chromosome arms, especially with regard to small intervals. In general, positive interference was found in the chromosome arms and no or negative interference in the genetically small but physically large centromeric region
External Databases	http://link.springer.de/link/service/journals/00122/contents/01/00842/paper/s00122-001-0842-8.pdf
Keyword	[ Hide all but 1 of 33 ] addition arms barley centromere chromosome chromosome arm coefficient of coincidence crossover interference dependence double haploid events fraction genetic marker genome haploid haploid lines hordeum hordeum vulgare interference intermediate interval linkage map mapping negative interference nor position recombination simulation simulations statistics synaptonemal complex wild emmer wheat

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