Estimates of population differentiation obtained from enzyme polymorphisms and quantitative characters

Price, Samantha A.; Shumaker, Kathy M.; Kahler, A. L.; Allard, R. W.; Hill, James E.

doi:10.1093/oxfordjournals.jhered.a109889

Cited by 41 publications

(20 citation statements)

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“…Large reductions in genetic variability within populations and increased differentiation among populations have also been observed in other self-fertilizing grasses (Price et al 1984;Larson et al 2001). Genetic diversity of Melica transsilvanica is lower than that found in other facultative self-pollinating grass species, e.g.…”

Section: Level Of Aflp Variation: Implications For the Breeding Systementioning

confidence: 81%

Low level of genetic variation within Melica transsilvanica populations from the Kraków-Częstochowa Upland and the Pieniny Mts revealed by AFLPs analysis

Szczepaniak

Cieślak

2011

Acta Soc Bot Pol

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Fragmented distribution, the breeding system and effects of genetic drift in small-size populations occurring at edge of the species range play an important role in shaping genetic diversity of such a species. Melica transsilvanica is a plant rare in the flora of Poland, where it reaches the northern limit of its continuous range. Amplified Fragment Length Polymorphism (AFLP) DNA profiling method was applied to measure genetic diversity among and within populations of M. transsilvanica. Additionally, genetic relationships between M. transsilvanica and Melica ciliata, two closely related species, were explored. A total of 68 plants from 7 populations of M. transsilvanica and 24 plants from 2 populations of M. ciliata, collected in Poland and outside it, were analyzed. Using 294 AFLP fragments from 3 primer combinations, accessions were grouped into two major clusters associating with M. ciliata and M. transsilvanica, respectively. Further, two subclusters, corresponding to the samples collected from the Pieniny Mts and from the KrakówCzêstochowa Upland were clearly distinguished within the M. transsilvanica group. The hierarchical AMOVA exhibited significant genetic distinction between these geographic regions (60.89%, p<0.001). The obtained results showed that the most genetic diversity resided between the populations of M. transsilvanica (86.03%) while considerably lower genetic variation was found within the populations (13.97%), which is consistent with the results reported for self-plants. The low level of AFLP genetic variation of M. transsilvanica can be caused by the geographic isolation of populations, which preserves the dominant self-mating breeding system of the species. Individual populations of M. transsilvanica are characterized by isolated gene pools differing by a small number of loci.

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Section: Level Of Aflp Variation: Implications For the Breeding Systementioning

confidence: 81%

Low level of genetic variation within Melica transsilvanica populations from the Kraków-Częstochowa Upland and the Pieniny Mts revealed by AFLPs analysis

Szczepaniak

Cieślak

2011

Acta Soc Bot Pol

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“…These studies sometimes indicate a stronger differentiation in morphological traits than at molecular loci. Price et al (1984) found a better agreement between similarity rankings of morphological traits and allozymes for three predominantly inbreeding plant species than for one predominantly outcrossing plant species. They related their results to the higher probability of multilocus associations in predominantly self-pollinating as opposed to outcrossing species.…”

Section: Within-population Variationmentioning

confidence: 80%

“…Several recent studies use this principle (e.g. Prout & Barker, 1993;Podolsky & Holtsford, 1995), but studies including selfing species are rare (Price et al, 1984).…”

Section: Introductionmentioning

confidence: 99%

Genetic variation at marker loci and in quantitative traits in natural populations of Arabidopsis Thaliana

1997

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Genetic variation was studied in quantitative traits and molecular markers in six natural Scandinavian populations of Arabidopsis thaliana. Only two of the populations had several molecular marker haplotypes and significant between-family variance components in quantitative traits. There was no genetic variation in the other four populations. The differentiation between the populations was high in both molecular markers and quantitative traits, with FST estimates of above 0.60 in almost all traits. The patterns of variation of the neutral markers and morphological and phenological traits were consistent in all the analyses, as opposed to what has been found in predominantly outcrossing species. The general picture of the level and distribution of genetic variance agrees with the information from other predominantly inbreeding species.

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“…L'évaluation de la diversité génotypique ou phénotypique peut être effectuée à partir de l'étude des généa-logies des variétés considérées (Rodgers et al, 1983; Chevalet, 1984;Lefort-Buson, 1986), à partir de caractères agromorphologiques (Behl, 1981;Behl et al, 1985;Camussi et al, 1983;Martinez et al, 1983; Chevalet, 1984; Price et al, 1984;Cox et al, 1985a;Shamsuddin, 1985;Singh et al, 1985;Prasad et Singh, 1986) ou encore à partir de données moléculaires (Lookhart et al, 1983;Price et al, 1984;Cox et al, 1985a,b). Des (1984) et Cox et al (1985b) n'ont observé aucune relation entre le coefficient de parenté et un coefficient de similarité calculé à partir de l'électrophorèse des gliadines; alors que chez le soja, Cox et al (1985a) Picard, 1990 (Picard et al, 1992 (1979).…”

Section: Introductionunclassified

“…

Chevalet, 1984;Lefort-Buson, 1986), à partir de caractères agromorphologiques (Behl, 1981;Behl et al, 1985;Camussi et al, 1983;Martinez et al, 1983; Chevalet, 1984;Price et al, 1984;Cox et al, 1985a;Shamsuddin, 1985;Singh et al, 1985; Prasad et Singh, 1986) ou encore à partir de données moléculaires (Lookhart et al, 1983;Price et al, 1984; Cox et al, 1985a,b

…”

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Étude de la diversité génétique du blé tendre. I. Comparaison de distances biochimiques, agromorphologiques et généalogiques

et al. 1992

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Estimates of population differentiation obtained from enzyme polymorphisms and quantitative characters

Cited by 41 publications

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Low level of genetic variation within Melica transsilvanica populations from the Kraków-Częstochowa Upland and the Pieniny Mts revealed by AFLPs analysis

Low level of genetic variation within Melica transsilvanica populations from the Kraków-Częstochowa Upland and the Pieniny Mts revealed by AFLPs analysis

Genetic variation at marker loci and in quantitative traits in natural populations of Arabidopsis Thaliana

Étude de la diversité génétique du blé tendre. I. Comparaison de distances biochimiques, agromorphologiques et généalogiques

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