Effect of number of seed parents on the genetic diversity of artificially regenerated stands of holm oak.

Silvio Fici, Concetta Burgarella

Risultato della ricerca: Article

Abstract

Artificial populations of holm oak (Quercus ilex L. s.l.) and their natural seed origin populations selected from Andalusia (Southern Spain) and Sicily (Southern Italy) were analysed with six nuclear microsatellite loci to explore the effect of seed collection methods. Low effective allele numbers (3.07-6.67) and extremely low effective population sizes (35.4-102.9) were detected in both reforestation stands, probably due to an inappropriate forester seed collection strategy limited to a few mother trees. Analysis of simulated progenies showed that optimal sampling size to obtain seed collections genetically similar to the origin population should range from 20 to 50 individuals, but could be different between the two regions, being higher in the more genetically diverse Andalusia.
Lingua originaleEnglish
pagine (da-a)313-317
RivistaBOCCONEA
Volume21
Stato di pubblicazionePublished - 2007

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Quercus ilex
genetic variation
seeds
seed trees
foresters
Sicily
reforestation
population size
Italy
Spain
microsatellite repeats
alleles
loci
sampling
methodology

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Effect of number of seed parents on the genetic diversity of artificially regenerated stands of holm oak. / Fici, Silvio; Burgarella, Concetta.

In: BOCCONEA, Vol. 21, 2007, pag. 313-317.

Risultato della ricerca: Article

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abstract = "Artificial populations of holm oak (Quercus ilex L. s.l.) and their natural seed origin populations selected from Andalusia (Southern Spain) and Sicily (Southern Italy) were analysed with six nuclear microsatellite loci to explore the effect of seed collection methods. Low effective allele numbers (3.07-6.67) and extremely low effective population sizes (35.4-102.9) were detected in both reforestation stands, probably due to an inappropriate forester seed collection strategy limited to a few mother trees. Analysis of simulated progenies showed that optimal sampling size to obtain seed collections genetically similar to the origin population should range from 20 to 50 individuals, but could be different between the two regions, being higher in the more genetically diverse Andalusia.",
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AB - Artificial populations of holm oak (Quercus ilex L. s.l.) and their natural seed origin populations selected from Andalusia (Southern Spain) and Sicily (Southern Italy) were analysed with six nuclear microsatellite loci to explore the effect of seed collection methods. Low effective allele numbers (3.07-6.67) and extremely low effective population sizes (35.4-102.9) were detected in both reforestation stands, probably due to an inappropriate forester seed collection strategy limited to a few mother trees. Analysis of simulated progenies showed that optimal sampling size to obtain seed collections genetically similar to the origin population should range from 20 to 50 individuals, but could be different between the two regions, being higher in the more genetically diverse Andalusia.

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