ISSN:
1573-5060
Schlagwort(e):
AFLP
;
chiasma localisation
;
leek
;
linkage map
;
recombination
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Abstract Genetic linkages of 1:1 segregating amplified fragment length polymorphism (AFLPTM) markers in leek (2n=4x=32) were studied with the aim of detecting block inheritance resulting from strong suppression of crossing over in chromosomal arms. The study comprised 97 markers in 70 plants originating from a cross between two highly heterozygous parents. At LOD≥3, 52 markers were linked in 23 linkage groups, spanning 405 of an expected 6400 cM. Cytogenetic data in previous studies indicated that recombination may be suppressed in two-thirds of the leek genome, supposedly leading to large linkage blocks of markers. In the present study, however, comparison of AFLP linkages with simulations indicates that the linkage blocks are much smaller, comprising no more than one-third of the leek genome.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1003728808682
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