Molecular markers have shown a high level of genetic diversity in most extant populations of the federally endangered Lindera melissifolia (Walt.) Blume in the southeastern United States. However, it is unknown if diversity in adaptive traits exists. We quantified adaptive trait variation in 17 L. melissifolia genotypes by growing genets from two disjunct populations in the Lower Mississippi Alluvial Valley in a common-garden environment. We then examined genotype-environment interaction through introduction of a flooding treatment. Within a common-garden environment, variation in adaptive traits was affected by genotype. Stem height, stem diameter, leaf number, and stem architecture accounted for 56% of variation among genotypes, and an additional 23% of variation was attributed to differences in vegetative fecundity and foliar chlorophyll content. There was no divergence in plant morphology between disjunct populations. Plastic response to a winter flooding regime varied in magnitude and direction among male genotypes, and only in magnitude in female genotypes. A decrease in L. melissifolia population sizes would diminish genetic diversity, as well as adaptive trait variation, and may threaten long-term persistence of extant populations.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.