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193 results for “Saxifraga granulata”
Saxifraga granulata L. (BR0000010926376)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000010926192)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000010936399)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000010937341)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000010925621)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000012164912)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000010936276)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000010926284)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000010925744)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Saxifraga granulata L. (BR0000009443136)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Molecular and quantitative genetic variation within and between populations of the declining grassland species Saxifraga granulata
<p class="MsoNormal"><span>Formerly common plant species are expected to be particularly susceptible to recent habitat fragmentation. We studied the population genetics of 19 recently fragmented <em>Saxifraga granulata</em> populations (max. distance 61 km) in Luxembourg and neighbouring Germany using RAPD markers and a common garden experiment. We assessed (1) the relationships between plant fitness, quantitative genetic variation, molecular genetic variation and population size, and (2) the relative importance of genetic drift and selection in shaping genetic variation. Molecular genetic diversity was high but did not correlate with population size, habitat conditions or with plant performance. Genetic differentiation was low (<em>F</em><sub>ST</sub> = 0.079 ± 0.135) and there was no isolation by distance. Longevity, clonality and the long-lived seed bank of <em>S. granulata</em> may have prevented strong genetic erosion and genetic differentiation among populations. H</span><span>owever, genetic distinctness increased with decreasing genetic diversity indicating that random genetic drift occurred in the studied populations. Quantitative and molecular gen</span><span>etic variation were correlated and their differentiation (<em>Q</em><sub>ST </sub>vs. <em>F</em><sub>ST</sub>) among <em>S. granulata</em> populations was similar, suggesting that mainly random processes have shaped the quantitative genetic differentiation among populations. However, pairwise quantitative genetic distances increased with geographic and climatic distances, even when adjusted for molecular genetic distances, indicating diversifying selection. Our results indicate that long-lived clonal species may be buffered at least temporarily against the negative effects of fragmentation. The relationship between quantitative genetic and geographic distance may be a more sensitive indicator of selection than <em>Q</em><sub>ST</sub> - <em>F</em><sub>ST</sub> differences.</span></p>
Molecular and quantitative genetic variation within and between populations of the declining grassland species Saxifraga granulata
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Data from: Genetic diversity and spatial genetic structure of the grassland perennial Saxifraga granulata along two river systems
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