- Title
- Germination strategy of chenopodium acuminatum Willd. under Fluctuating Salinity Habitats
- Creator
- Tian, Yu; Li, Yang; Zhang, Hongxiang; Tennakoon, Kushan; Sun, Zewei
- Date
- 2023
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/198721
- Identifier
- vital:19091
- Identifier
-
https://doi.org/10.3390/agronomy13112769
- Identifier
- ISSN:2073-4395 (ISSN)
- Abstract
- Germination events of plants often occur after rainfall in saline environments where the soil salinity is diluted, viz recovery germination. Previous germination studies have rarely considered the duration of exposure to salt stress, and none of them have investigated recovery germination under low-salt concentration, other than in distilled water. The main objective of this study was to investigate the effects of salinity, exposure duration and low-salt recovery solutions on seed germination of the weed Chenopodium acuminatum to get a clear insight about the germination strategy exhibited by this species in a saline habitat. Seeds were initially exposed to 0–400 mM NaCl for 10, 20 and 30 d. The subsequent recovery experiment was conducted differently. For those initially treated with 100 and 200 mM NaCl, the recovery solution was distilled water, while for those initially treated with 300 and 400 mM NaCl, the recovery solution was distilled water, at 50 and 100 mM NaCl. Results showed that the recovery germination percentage and rate significantly decreased when the exposure duration extended. Seeds could subsequently recover to germinate at high percentages at recovery salt solution concentrations for a short duration, but the recovery percentages and rates in high salinity, combined with high exposure duration and relatively high recovery salt concentrations, were remarkably lower. More than 30% of the ungerminated seeds were viable after the recovery experiment. We suggest that Ch. acuminatum exhibits a ‘cautious’ strategy of germination to avoid injury from long-term salt stress and ensure survival for the subsequent continuation of its population under unfavorable saline conditions. © 2023 by the authors.
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Relation
- Agronomy Vol. 13, no. 11 (2023), p.
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- Copyright © 2023 by the authors
- Rights
- Open Access
- Subject
- 3002 Agriculture, land and farm management; 3004 Crop and pasture production; Prolonged exposure duration; Recovery germination; Salt stress; Seed secondary dormancy
- Full Text
- Reviewed
- Funder
- This research was funded by Major Science and technology Project of Jilin Province (20230303008SF), Science and Technology Department of Jilin Province of China (20210202070NC), the National Natural Science Foundation of China (41971069) and Science and technology research project of Education Department of Jilin Province (grant number JJKH20220370KJ).
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