- Tytuł:
- High genetic diversity promotes a common-garden trial of Quercus robur as a potential seed source
- Autorzy:
-
Burczyk, Jaroslav
Chybicki, Igor J.
Trojankiewicz, Magdalena - Powiązania:
- https://bibliotekanauki.pl/articles/956975.pdf
- Data publikacji:
- 2018
- Wydawca:
- Polska Akademia Nauk. Instytut Dendrologii PAN
- Tematy:
-
common-garden trials
genetic diversity
microsatellites
seedling seed orchards - Opis:
- The process of adaptation in forest trees might be facilitated if seeds resulting from crossings among different provenances are used for plantation establishment. This can be accomplished if seeds from existing common-garden trials become available. This paper aims to characterize genetic diversity of a provenance/family common-garden trial of Quercus robur which is considered a possible source of highly diverse seed lots. Provenance/family common-garden trial of Quercus robur located in Oleszyce, Poland, consisting of 8 to 19 families of six Polish provenances was chosen for the study. With the aid of 16 nuclear microsatellite markers, 1812 trees growing in the trial were genotyped. Standard population genetic parameters were calculated, and genetic variation and inbreeding were compared among provenances. Expected heterozygosity and particularly allelic richness appeared to be high, reaching on average 0.847 and 23.5, respectively. We found no signatures of inbreeding (FIS=0.006) and low, although statistically significant, level of genetic differentiation among provenances (FST=0.016). On the other hand, we found high allelic differentiation (AST=0.137) between provenances, though uneven contribution of each provenance to the total allelic richness was noted. Effective population sizes estimated for each provenance based on linkage disequilibrium were highly correlated with the number of families within provenances. We conclude that the studied common-garden trial possesses high genetic diversity and possible mating among different provenances may promote further heterosis effects. Thus the trial may be used in the future as an experimental source of highly diverse seed lots much needed in the context of climate change.
- Źródło:
-
Dendrobiology; 2018, 79; 1-9
1641-1307 - Pojawia się w:
- Dendrobiology
- Dostawca treści:
- Biblioteka Nauki
Artykuł