Assessment of population genetics and climatic variability can refine climate‐informed seed transfer guidelines

2020 ◽  
Vol 28 (3) ◽  
pp. 485-493 ◽  
Author(s):  
Rob Massatti ◽  
Robert K. Shriver ◽  
Daniel E. Winkler ◽  
Bryce A. Richardson ◽  
John B. Bradford

1989 ◽  
Vol 19 (7) ◽  
pp. 832-841 ◽  
Author(s):  
C. C. Ying ◽  
C. Thompson ◽  
L. Herring

Thirty provenances of lodgepole pine (Pinuscontorta Dougl.) test stock raised at two nurseries, Cowichan Lake (coastal British Columbia) and Red Rock (interior British Columbia), were assessed in two 15-year field trials. Analyses indicated three broad geographic regions of genetic differentiation in British Columbia: coast, coast–interior transition, and central and southern interior. Provenance elevation was found to have a strong influence on growth. The results suggest that the present seed transfer guidelines for lodgepole pine in the interior region of this province are conservative enough to prevent the use of maladapted seed sources. Nursery effect declined over a period of 15 years, while provenance differences increased with the age of the trials. Interactions between provenances and sites also increased after age 9. This suggests that the effect due to seedling culture and environment in the nursery is short-term relative to the influence of the genetic component. Nursery growth was generally not a good predictor of provenance field performance.



2010 ◽  
Vol 13 (1) ◽  
pp. 113-124 ◽  
Author(s):  
S. Malaval ◽  
B. Lauga ◽  
C. Regnault-Roger ◽  
G. Largier




AoB Plants ◽  
2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Zebadiah G Yoko ◽  
Kate L Volk ◽  
Ned A Dochtermann ◽  
Jill A Hamilton

Abstract For widely distributed species, understanding the scale over which genetic variation correlates to landscape structure and composition is critical. Particularly within the context of restoration, the evolution of genetic differences may impact success if seeds are maladapted to the restoration environment. In this study, we used Geum triflorum to quantify the scale over which genetic differences for quantitative traits important to adaptation have evolved, comparing the proportion of variance attributed to broad regional- and local population-level effects. Geum triflorum is a widely distributed species spanning a range of environments, including alvar and prairie habitats, which have extreme regional differences in soil-moisture availability. Alvar habitats are regions of thin soil over limestone that experience substantial seasonal variation in water availability, from flooding to desiccation annually. This contrasts with prairie habitats, whose deeper soils mitigate irregular flood–desiccation cycles. Using a common garden experiment, we evaluated 15 traits broadly grouped into three trait classes: resource allocation, stomatal characteristics, and leaf morphological traits for individuals sourced from prairie and alvar environments. We quantified the proportion of trait variance explained by regional- and population-scale effects and compared the proportion of regional- and population-trait variances explained across trait classes. Significant regional differentiation was observed for the majority of quantitative traits; however, population-scale effects were equal or greater than regional effects, suggesting that important genetic differences may have evolved across the finer population scale. Stomatal and resource allocation trait classes exhibited substantial regional differentiation relative to morphological traits, which may indicate increased strength of selection for stomatal and resource allocation traits relative to morphological traits. These patterns point towards the value in considering the scale over which genetic differences may have evolved for widely distributed species and identify different functional trait classes that may be valuable in establishing seed transfer guidelines.





2008 ◽  
Vol 95 (1) ◽  
pp. 66-76 ◽  
Author(s):  
Andrew D. Bower ◽  
Sally N. Aitken


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