Higher recombination frequencies in female compared to male meisoses in Brassica oleracea

M. J. Kearsey; L. D. Ramsay; D. E. Jennings; D. J. Lydiate; E. J.R. Bohuon; D. F. Marshall

doi:10.1007/BF00223680

Higher recombination frequencies in female compared to male meisoses in Brassica oleracea

M. J. Kearsey, L. D. Ramsay, D. E. Jennings, D. J. Lydiate, E. J.R. Bohuon, D. F. Marshall

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

Linkage maps of the nine chromosomes of Brassica oleracea, based on 75 informative molecular markers, have been compared in first and second backcross progeny from a cross between two doubled haploid lines. The second backcross progeny showed greater recombination frequencies for 75% of the pairs of adjacent markers, but there was no obvious indication that this effect was localised to particular regions of the chromosomes. Four chromosomes increased in genetic length more than twofold, while overall, the total map was 66% longer. The possible causes of this discrepancy are analysed. A sex difference in chiasma distribution and/or frequency at meiosis is thought to be the most likely explanation. The implications of this finding for mapping and map-based applications are discussed.

Original language	English
Pages (from-to)	363-367
Number of pages	5
Journal	Theoretical and Applied Genetics
Volume	92
Issue number	3-4
DOIs	https://doi.org/10.1007/BF00223680
Publication status	Print publication - 1996
Externally published	Yes

Keywords

Brassica oleracea
Mapping
Meiosis
Molecular markers
Sex differences in recombination

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10.1007/BF00223680

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title = "Higher recombination frequencies in female compared to male meisoses in Brassica oleracea",

abstract = "Linkage maps of the nine chromosomes of Brassica oleracea, based on 75 informative molecular markers, have been compared in first and second backcross progeny from a cross between two doubled haploid lines. The second backcross progeny showed greater recombination frequencies for 75% of the pairs of adjacent markers, but there was no obvious indication that this effect was localised to particular regions of the chromosomes. Four chromosomes increased in genetic length more than twofold, while overall, the total map was 66% longer. The possible causes of this discrepancy are analysed. A sex difference in chiasma distribution and/or frequency at meiosis is thought to be the most likely explanation. The implications of this finding for mapping and map-based applications are discussed.",

keywords = "Brassica oleracea, Mapping, Meiosis, Molecular markers, Sex differences in recombination",

author = "Kearsey, {M. J.} and Ramsay, {L. D.} and Jennings, {D. E.} and Lydiate, {D. J.} and Bohuon, {E. J.R.} and Marshall, {D. F.}",

year = "1996",

doi = "10.1007/BF00223680",

language = "English",

volume = "92",

pages = "363--367",

journal = "Theoretical and Applied Genetics",

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TY - JOUR

T1 - Higher recombination frequencies in female compared to male meisoses in Brassica oleracea

AU - Kearsey, M. J.

AU - Ramsay, L. D.

AU - Jennings, D. E.

AU - Lydiate, D. J.

AU - Bohuon, E. J.R.

AU - Marshall, D. F.

PY - 1996

Y1 - 1996

N2 - Linkage maps of the nine chromosomes of Brassica oleracea, based on 75 informative molecular markers, have been compared in first and second backcross progeny from a cross between two doubled haploid lines. The second backcross progeny showed greater recombination frequencies for 75% of the pairs of adjacent markers, but there was no obvious indication that this effect was localised to particular regions of the chromosomes. Four chromosomes increased in genetic length more than twofold, while overall, the total map was 66% longer. The possible causes of this discrepancy are analysed. A sex difference in chiasma distribution and/or frequency at meiosis is thought to be the most likely explanation. The implications of this finding for mapping and map-based applications are discussed.

AB - Linkage maps of the nine chromosomes of Brassica oleracea, based on 75 informative molecular markers, have been compared in first and second backcross progeny from a cross between two doubled haploid lines. The second backcross progeny showed greater recombination frequencies for 75% of the pairs of adjacent markers, but there was no obvious indication that this effect was localised to particular regions of the chromosomes. Four chromosomes increased in genetic length more than twofold, while overall, the total map was 66% longer. The possible causes of this discrepancy are analysed. A sex difference in chiasma distribution and/or frequency at meiosis is thought to be the most likely explanation. The implications of this finding for mapping and map-based applications are discussed.

KW - Brassica oleracea

KW - Mapping

KW - Meiosis

KW - Molecular markers

KW - Sex differences in recombination

UR - http://www.mendeley.com/research/higher-recombination-frequencies-female-compared-male-meisoses-brassica-oleracea-1

U2 - 10.1007/BF00223680

DO - 10.1007/BF00223680

M3 - Article

SN - 0040-5752

VL - 92

SP - 363

EP - 367

JO - Theoretical and Applied Genetics

JF - Theoretical and Applied Genetics

IS - 3-4

ER -

Higher recombination frequencies in female compared to male meisoses in Brassica oleracea

Abstract

Keywords

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