Does origin always matter? Evaluating the influence of nonlocal seed provenances for ecological restoration purposes in a widespread and outcrossing plant species

Ecology and Evolution

Jutta Reiker¹  Benjamin Schulz²  Volker Wissemann¹ 

[1] Institute of Botany, Justus Liebig University Giessen, Giessen, Germany;Institute of Landscape Ecology and Resource Management, Interdisciplinary Research Centre (IFZ), Justus Liebig University Giessen, Giessen, Germany

关键词: Daucus carota;    local‐is‐best theory;    microsatellite markers;    nonlocal genotypes;    population genetics;    restoration;   

DOI  :  10.1002/ece3.1817

来源: Wiley

【 摘 要 】

Abstract

For restoration purposes, nature conservation generally enforces the use of local seed material based on the “local-is-best” (LIB) approach. However, in some cases recommendations to refrain from this approach have been made. Here we test if a common widespread species with no obvious signs of local adaptation may be a candidate species for abandoning LIB during restoration. Using 10 microsatellite markers we compared population genetic patterns of the generalist species Daucus carota in indigenous and formerly restored sites (nonlocal seed provenances). Gene diversity overall ranged between H_e = 0.67 and 0.86 and showed no significant differences between the two groups. Hierarchical AMOVA and principal component analysis revealed very high genetic population admixture and negligible differentiation between indigenous and restored sites (F_CT = 0.002). Moreover, differentiation between groups was caused by only one outlier population, where inbreeding effects are presumed. We therefore conclude that the introduction of nonlocal seed provenances in the course of landscape restoration did not jeopardize regional species persistence by contributing to inbreeding or outbreeding depressions, or any measurable adverse population genetic effect. On the basis of these results, we see no obvious objections to the current practice to use the 10-fold cheaper, nonlocal seed material of D. carota for restoration projects.

【 授权许可】

CC BY   
© 2015 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.

Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.