Wang, Jian-Yi and Bu, Zhao-Jun and Poschlod, Peter and Yusup, Shuayib and Zhang, Jia-Qi and Zhang, Zheng-Xiang (2024) Seed dormancy types and germination response of 15 plant species in temperate montane peatlands. ECOLOGY AND EVOLUTION, 14 (7): e11671. ISSN 2045-7758
Full text not available from this repository. (Request a copy)Abstract
Despite their crucial role in determining the fate of seeds, the type and breaking mode of seed dormancy in peatland plants in temperate Asia with a continental monsoon climate are rarely known. Fifteen common peatland plant species were used to test their seed germination response to various dormancy-breaking treatments, including dry storage (D), gibberellin acid soaking (GA), cold stratification (CS), warm followed cold stratification (WCS), GA soaking + cold stratification (GA + CS) and GA soaking + warm followed cold stratification (GA + WCS). Germination experiment, viability and imbibition test, and morphological observation of embryos were conducted. Of the 15 species, nine showed physiological dormancy (PD), with non-deep PD being the dominant type. Four species, Angelica pubescens, Cicuta virosa, Iris laevigata, and Iris setosa exhibited morphophysiological dormancy. Two species, Lycopus uniflorus and Spiraea salicifolia, demonstrated nondormancy. Overall, the effect hierarchy of dormancy-breaking is: CS > GA > WCS > GA + CS > D > GA + WCS. Principal component analysis demonstrated that seed traits, including embryo length: seed length ratio, seed size, and monocot/eudicot divergence, are more likely to influence seed dormancy than environmental factors. Our study suggests that nearly 90% of the tested peatland plant species in the Changbai Mountains demonstrated seed dormancy, and seed traits (e.g. embryo-to-seed ratio and seed size) and abiotic environmental factors (e.g. pH and temperature seasonality) are related to germination behavior, suggesting seed dormancy being a common adaptation strategy for the peatland plants in the temperate montane environment.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MORPHOPHYSIOLOGICAL DORMANCY; PHYSICAL DORMANCY; ECOLOGY; BREAK; BANK; ECOPHYSIOLOGY; REQUIREMENTS; MECHANISMS; APIACEAE; GROWTH; Changbai Mountains; cold stratification; germination response; peatlands; physiological dormancy |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Ökologie und Naturschutzbiologie (Prof. Dr. Peter Poschlod) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Dec 2025 08:52 |
| Last Modified: | 02 Dec 2025 08:52 |
| URI: | https://pred.uni-regensburg.de/id/eprint/65125 |
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