Plant developmental stage influences responses of Pinus strobiformis seedlings to experimental warming

ABSTRACT: Abstract Seedling emergence, survival, morphological and physiological traits, and oxidative stress resistance of southwestern white pine (Pinus strobiformis Engelm.) were studied in response to warming treatments applied during embryogenesis, germination, and early seedling growth. Daytime air temperature surrounding cones in tree canopies was warmed by +2.1°C during embryo development. Resulting seeds and seedlings were assigned to three thermal regimes in growth chambers, with each regime separated by 4°C to encompass the wide range of temperatures observed over space and time across the species’ range, plus the effect of heat waves coupled with a high carbon emissions scenario of climate warming. The embryo warming treatment reduced percent seedling emergence in all germination and gro

SUBMITTER: Moler E 

PROVIDER: S-EPMC10168050 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature