TY - JOUR
T1 - Genetic diversity and linkage disequilibrium analysis in elite sugar beet breeding lines and wild beet accessions
AU - Adetunji, I.
AU - Willems, G.
AU - Tschoep, H.
AU - Bürkholz, A.
AU - Barnes, S.
AU - Boer, M.P.
AU - Malosetti, M.
AU - Horemans, S.
AU - van Eeuwijk, F.
PY - 2014
Y1 - 2014
N2 - Linkage disequilibrium decay in sugar beet is strongly affected by the breeding history, and varies extensively between and along chromosomes, allowing identification of known and unknown signatures of selection. Genetic diversity and linkage disequilibrium (LD) patterns were investigated in 233 elite sugar beet breeding lines and 91 wild beet accessions, using 454 single nucleotide polymorphisms (SNPs) and 418 SNPs, respectively. Principal coordinate analysis suggested the existence of three groups of germplasm, corresponding to the wild beets, the seed parent and the pollen parent breeding pool. LD was investigated in each of these groups, with and without correction for genetic relatedness. Without correction for genetic relatedness, in the pollen as well as the seed parent pool, LD persisted beyond 50 centiMorgan (cM) on four (2, 3, 4 and 5) and three chromosomes (2, 4 and 6), respectively; after correction for genetic relatedness, LD decayed after
AB - Linkage disequilibrium decay in sugar beet is strongly affected by the breeding history, and varies extensively between and along chromosomes, allowing identification of known and unknown signatures of selection. Genetic diversity and linkage disequilibrium (LD) patterns were investigated in 233 elite sugar beet breeding lines and 91 wild beet accessions, using 454 single nucleotide polymorphisms (SNPs) and 418 SNPs, respectively. Principal coordinate analysis suggested the existence of three groups of germplasm, corresponding to the wild beets, the seed parent and the pollen parent breeding pool. LD was investigated in each of these groups, with and without correction for genetic relatedness. Without correction for genetic relatedness, in the pollen as well as the seed parent pool, LD persisted beyond 50 centiMorgan (cM) on four (2, 3, 4 and 5) and three chromosomes (2, 4 and 6), respectively; after correction for genetic relatedness, LD decayed after
KW - beta-vulgaris l.
KW - genome-wide association
KW - yellow-vein-virus
KW - population-structure
KW - ssp maritima
KW - rhizomania resistance
KW - restorer gene
KW - markers
KW - map
KW - dna
U2 - 10.1007/s00122-013-2239-x
DO - 10.1007/s00122-013-2239-x
M3 - Article
SN - 0040-5752
VL - 127
SP - 559
EP - 571
JO - Theoretical and Applied Genetics
JF - Theoretical and Applied Genetics
IS - 3
ER -