Isozyme polymorphism in Festuca rubraL.

Livesey, V.; Norrington-Davies, J.

doi:10.1007/bf00022562

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…Surveys of isozyme variation in natural populations of forage grasses have been reported for ryegrass (Hayward, 1985 ;Arcioni et al ., 1988;Oliveira & Charmet, 1989), cocksfoot (Lumaret, 1984), red fescue (Livesey & Norrington-Davies, 1991), Cynosurus cristatus L . (Ennos, 1985), and Arrhenaterum elatius (L .)…”

Section: Introductionmentioning

confidence: 99%

Isozyme polymorphism and geographic differentiation in a collection of French perennial ryegrass populations

Charmet¹,

Balfourier²,

Ravel³

1993

Genet Resour Crop Evol

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A sample of 60 natural populations of perennial ryegrass from France has been studied for allelic variation at 7 polymorphic enzyme loci . Population genetic statistics are of the same magnitude than those previously reported for other outbreeding, short-lived perennial species (P = 64%, A = 2 .75, H = 0 .270) .Genotype frequencies at most collection sites do not deviate significantly from Hardy-Weinberg expectations, with however a slight deficit of heterozygotes which may be accounted for by a Wahlund effect. Gene diversity is mainly explained by the within population component . The between population differentiation F s, averaged on 4 loci is only 0 .054, which accounts for only 6% of the whole diversity .When mapped, most allele frequencies do not show any special structure . Only five alleles present a clinal trend from North to South . These 5 alleles are probably related to some climatic factors such as average temperature or potential evapotranspiration . The causal hypotheses about the low level of betweenpopulation differentiation and spatial structure are discussed with reference to the literature .The consequences of the found population structure for sampling and conservation strategies of natural populations for genetic resources are presented and discussed .

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Section: Introductionmentioning

confidence: 99%

Isozyme polymorphism and geographic differentiation in a collection of French perennial ryegrass populations

Charmet¹,

Balfourier²,

Ravel³

1993

Genet Resour Crop Evol

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“…Genetic structures in natural populations of forage grasses have been already reported for Daclylis glomerata (Lumaret, 1984), Festuca rubra (Livesey & Norrington-Davies, 1991), Cynosurus cristatus (Ennos, 1985) and Arrhenaterum elatius (Ducousso et al, 1990). …”

Section: Genetic Diversitymentioning

confidence: 72%

Geographical patterns of isozyme variation in Mediterranean populations of perennial ryegrass

Balfourier¹,

Charmet²

1994

Heredity

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), have been studied for allelic variation at 13 enzyme loci. The total genetic diversity results mainly from the within-population component whereas a part of the between-population component can be explained by the geographical origins of the populations. Relationships between accessions have been studied using cluster and multivariate analyses such as principal component and discriminant analyses. Finally, the frequency and distribution of the most discriminating allele have been represented on geographic maps. The results indicate that Corsican populations are similar to Italian accessions whereas both French and Sardinian populations differ from all the others. The origins and relationships between each geographical group of accessions are discussed and, taking historical factors into account, we can suggest that Corsican populations have been introduced from Italy to the eastern side of the island.

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“…Electrophoretic methods for isoenzyme analysis testified their value to resolving systematic and evolutionary problems on species and subspecies level [6,14]. In the last two decades several isoenzyme studies of subarctic/arctic [1][2][3]15] and temperate zone fescues [19] were conducted in attempt to investigate species delimitation based on isoenzyme markers.…”

Section: Introductionmentioning

confidence: 99%

Isoenzyme variation and genetic affinities among five Festuca species of section Aulaxyper Dumort.

Angelov¹,

Bednarska²

2018

VLUBS

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Isozyme polymorphism in Festuca rubraL.

Cited by 8 publications

References 9 publications

Isozyme polymorphism and geographic differentiation in a collection of French perennial ryegrass populations

Isozyme polymorphism and geographic differentiation in a collection of French perennial ryegrass populations

Geographical patterns of isozyme variation in Mediterranean populations of perennial ryegrass

Isoenzyme variation and genetic affinities among five Festuca species of section Aulaxyper Dumort.

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