Physical Dormancy Release in Medicago truncatula Seeds Is Related to Environmental Variations.

ABSTRACT: Seed dormancy and timing of its release is an important developmental transition determining the survival of individuals, populations, and species in variable environments. Medicago truncatula was used as a model to study physical seed dormancy at the ecological and genetics level. The effect of alternating temperatures, as one of the causes releasing physical seed dormancy, was tested in 178 M. truncatula accessions over three years. Several coefficients of dormancy release were related to environmental variables. Dormancy varied greatly (4-100%) across accessions as well as year of experiment. We observed overall higher physical dormancy release under more alternating temperatures (35/15 °C) in comparison with less alternating ones (25/15 °C). Accessions from more arid clim

SUBMITTER: Renzi JP 

PROVIDER: S-EPMC7238229 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature