NDLI: An association mapping approach to identify flowering time genes in natural populations of Lolium perenne (L.)

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An association mapping approach to identify flowering time genes in natural populations of Lolium perenne (L.)

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An association mapping approach to identify flowering time genes in natural populations of Lolium perenne (L.)

Content Provider	Springer Nature Link
Author	Skøt, Leif Humphreys, Mervyn O. Armstead, Ian Heywood, Sue Skøt, Kirsten P. Sanderson, Ruth Thomas, Ian D. Chorlton, Ken H. Hamilton, N. Ruaraidh Sackville
Copyright Year	2005
Abstract	We describe an association mapping approach using natural populations of perennial ryegrass (Lolium perenne L.) to identify molecular markers associated with heading date, an important trait affecting seasonal production, tillering, digestibility and grassland management regimes. Twenty-three natural populations originating from throughout Europe, with heading date phenotypes ranging from very early to very late, as well as three synthetic populations (varieties) were used for molecular marker genotyping using AFLP. In total, 589 polymorphic markers were identified. Hierarchical clustering, principal coordinate and other statistical analyses identified four outlying populations forming a clearly distinct sub-group. Removal of those four populations from the subsequent analysis reduced population sub-structure twofold. However, this made relatively little difference to the result of the association analysis. Linear regression identified three markers whose frequency of occurrence correlated with the heading date phenotype. Moreover, these markers were shown to be closely linked to each other within a major QTL on Chromosome 7, explaining 70% of the total variation in heading date. Pairwise linkage disequilibrium among them was also significant. These results suggest that association mapping approaches may be feasible in L. perenne, and that the use of natural populations could provide a useful source of genetic variation in traits of importance in crop improvement.
Starting Page	233
Ending Page	245
Page Count	13
File Format	PDF
ISSN	13803743
Journal	Molecular Breeding
Volume Number	15
Issue Number	3
e-ISSN	15729788
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	AFLP Genecology Germplasm Heading date Linkage disequilibrium Natural populations Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Molecular Biology Biotechnology Agronomy and Crop Science

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Nucleotide diversity and linkage disequilibrium of nine genes with putative effects on flowering time in perennial ryegrass (Lolium perenne L.).

Synteny between a major heading-date QTL in perennial ryegrass (Lolium perenne L.) and the Hd3 heading-date locus in rice

Identification of genes involved in the floral transition at the shoot apical meristem of Lolium perenne L. by use of suppression subtractive hybridisation

“Blind” mapping of genic DNA sequence polymorphisms in Lolium perenne L. by high resolution melting curve analysis

Association mapping of quality traits in potato (Solanum tuberosum L.)

Association mapping of quality traits in potato (Solanum tuberosum L.)

Phenotypic and genotypic variation in flowering time in Ethiopian barleys

Identification of coincident QTL for days to heading, spike length and spikelets per spike in Lolium perenne L.

Population structure and linkage disequilibrium in Lupinus albus L. germplasm and its implication for association mapping

An association mapping approach to identify flowering time genes in natural populations of Lolium perenne (L.)

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Nucleotide diversity and linkage disequilibrium of nine genes with putative effects on flowering time in perennial ryegrass (Lolium perenne L.).

Synteny between a major heading-date QTL in perennial ryegrass (Lolium perenne L.) and the Hd3 heading-date locus in rice

Identification of genes involved in the floral transition at the shoot apical meristem of Lolium perenne L. by use of suppression subtractive hybridisation

“Blind” mapping of genic DNA sequence polymorphisms in Lolium perenne L. by high resolution melting curve analysis

Association mapping of quality traits in potato (Solanum tuberosum L.)

Association mapping of quality traits in potato (Solanum tuberosum L.)

Phenotypic and genotypic variation in flowering time in Ethiopian barleys

Identification of coincident QTL for days to heading, spike length and spikelets per spike in Lolium perenne L.

Population structure and linkage disequilibrium in Lupinus albus L. germplasm and its implication for association mapping

An association mapping approach to identify flowering time genes in natural populations of Lolium perenne (L.)