Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L.

Daniel Thorogood; W. J. Kaiser; J. G. Jones; Ian P. Armstead

doi:10.1038/sj.hdy.6800071

Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L.

Daniel Thorogood, W. J. Kaiser, J. G. Jones, Ian P. Armstead

Department of Life Sciences

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Abstract

Perennial ryegrass (Lolium perenne L.) is an outcrossing, wind-pollinated species exhibiting a gametophytic two-locus system of self-incompatibility (S and Z). The two incompatibility loci were genotyped in a cross between a doubled-haploid plant crossed as the female parent with a normal heterozygous plant. The S and Z loci were found to segregate in the expected 1:1 ratio and also segregated independently. The two loci were mapped to linkage groups one and two respectively, in accordance with the Triticeae consensus map. In addition, there were notable associations between the segregation of particular alleles mapping to the S locus region of linkage group 1 and those mapping to the WG889/CDO920 loci region of linkage group 3 which resulted in significant segregation distortions. No such associations were found between the Z locus and this region or any other region of the genome. The L. perenne S and Z loci showed conserved synteny with the equivalent loci in rye (Secale cereale L.).

Original language	English
Pages (from-to)	385-390
Number of pages	6
Journal	Heredity
Volume	88
DOIs	https://doi.org/10.1038/sj.hdy.6800071
Publication status	Published - 01 May 2002

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title = "Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L.",

abstract = "Perennial ryegrass (Lolium perenne L.) is an outcrossing, wind-pollinated species exhibiting a gametophytic two-locus system of self-incompatibility (S and Z). The two incompatibility loci were genotyped in a cross between a doubled-haploid plant crossed as the female parent with a normal heterozygous plant. The S and Z loci were found to segregate in the expected 1:1 ratio and also segregated independently. The two loci were mapped to linkage groups one and two respectively, in accordance with the Triticeae consensus map. In addition, there were notable associations between the segregation of particular alleles mapping to the S locus region of linkage group 1 and those mapping to the WG889/CDO920 loci region of linkage group 3 which resulted in significant segregation distortions. No such associations were found between the Z locus and this region or any other region of the genome. The L. perenne S and Z loci showed conserved synteny with the equivalent loci in rye (Secale cereale L.).",

author = "Daniel Thorogood and Kaiser, {W. J.} and Jones, {J. G.} and Armstead, {Ian P.}",

note = "D Thorogood, W J Kaiser, J G Jones and I Armstead (2002). Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L. Heredity, 88(5), 385-390. RAE2008",

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AU - Jones, J. G.

AU - Armstead, Ian P.

N1 - D Thorogood, W J Kaiser, J G Jones and I Armstead (2002). Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L. Heredity, 88(5), 385-390. RAE2008

PY - 2002/5/1

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N2 - Perennial ryegrass (Lolium perenne L.) is an outcrossing, wind-pollinated species exhibiting a gametophytic two-locus system of self-incompatibility (S and Z). The two incompatibility loci were genotyped in a cross between a doubled-haploid plant crossed as the female parent with a normal heterozygous plant. The S and Z loci were found to segregate in the expected 1:1 ratio and also segregated independently. The two loci were mapped to linkage groups one and two respectively, in accordance with the Triticeae consensus map. In addition, there were notable associations between the segregation of particular alleles mapping to the S locus region of linkage group 1 and those mapping to the WG889/CDO920 loci region of linkage group 3 which resulted in significant segregation distortions. No such associations were found between the Z locus and this region or any other region of the genome. The L. perenne S and Z loci showed conserved synteny with the equivalent loci in rye (Secale cereale L.).

AB - Perennial ryegrass (Lolium perenne L.) is an outcrossing, wind-pollinated species exhibiting a gametophytic two-locus system of self-incompatibility (S and Z). The two incompatibility loci were genotyped in a cross between a doubled-haploid plant crossed as the female parent with a normal heterozygous plant. The S and Z loci were found to segregate in the expected 1:1 ratio and also segregated independently. The two loci were mapped to linkage groups one and two respectively, in accordance with the Triticeae consensus map. In addition, there were notable associations between the segregation of particular alleles mapping to the S locus region of linkage group 1 and those mapping to the WG889/CDO920 loci region of linkage group 3 which resulted in significant segregation distortions. No such associations were found between the Z locus and this region or any other region of the genome. The L. perenne S and Z loci showed conserved synteny with the equivalent loci in rye (Secale cereale L.).

U2 - 10.1038/sj.hdy.6800071

DO - 10.1038/sj.hdy.6800071

M3 - Article

SN - 1365-2540

VL - 88

SP - 385

EP - 390

JO - Heredity

JF - Heredity

ER -

Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L.

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