Changing seed origin changed plant traits—but not the response to moisture extremes
WHAT THE EVIDENCE SAYS
Nursery seed origin and admixture altered plant traits, but the experiment did not find corresponding differences in performance responses to imposed soil-moisture extremes. The result separates trait variation from demonstrated stress-performance advantage.
WHY IT MATTERS / OUR READ
Seed sourcing still matters, but this result cautions against assuming that greater admixture or a particular nursery origin necessarily produces short-term drought or excess-moisture resilience. Trait differences need to be linked to performance before they become a management claim.
CAVEATS / UNCERTAINTY
This was a short-term nursery experiment in one species, not a field establishment or multigenerational test. Seed-source effects may emerge under other climates, life stages, competition or longer time horizons.
SOURCE
Restoration Ecology — primary nursery experiment
View original evidence ↗
A short-term nursery experiment with Chamaecrista fasciculata complicates the assumption that mixing or changing seed sources automatically changes performance under wet and dry extremes.
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