干旱区生态环境知识资源中心(Arid): Re-watering solution facilitates seed germination and seedling growth of Carex schmidtii: Implication for species re-introduction in degraded semi-arid wetlands

Arid

DOI	10.1016/j.jenvman.2024.121286
	Re-watering solution facilitates seed germination and seedling growth of Carex schmidtii: Implication for species re-introduction in degraded semi-arid wetlands
	Zhang, Mingye; Liu, Shuchen; An, Yu; Zhang, Dongjie; Qi, Qing; Jiang, Ming; Cui, Geng; Tong, Shouzheng
通讯作者	An, Y
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2024
卷号	362
英文摘要	Water deficiency threatens the health and function of wetlands in semi -arid areas. Optimum re -watering is an effective method for close -to -natural restoration to mitigate wetland degradation. Although the ecological importance of optimal re -watering as a nature -based solution for promoting wetland plant growth has been widely recognized, the response mechanisms of seed germination and seedling growth to re -watering are still poorly understood despite their decisive impact on plant life history. To fill this gap, this study compared the characteristics of seed germination and seedling growth in Carex schmidtii under initial water content with three levels (30%, 50%, and 70%) and five re -watering treatments (maintained at constant water content and rewatering to 100% on 7th, 14th, 21st, and 28th day). Moreover, the degree of reserve mobilization during four germination stages (seed suckering, sprouting, 20% germination, and seedling growth) was investigated. The results showed that water deficiency and re -watering treatments significantly affected C. schmidtii seed germination, seedling growth, and reserve mobilization. Compared with the other treatments, 50% moisture content and re -watering to 100% on the 14th day (50%-RT3) treatment significantly improved germination traits (germination rate, daily germination rate, germination index, and vigor index) and seedling growth characteristics (shoot length, root length, shoot biomass, root biomass, and total biomass). Furthermore, the degree of mobilization of starch, soluble protein, fat, and soluble sugar accumulation in C. schmidtii seeds under 50%-RT3 was higher than that in the other treatments. The structural equation model showed that the characteristics of seed germination and seedling growth of C. schmidtii were directly related to water deficiency and re -watering treatments, whereas reserve mobilization indirectly affected seed germination and seedling growth. These findings demonstrated that water deficiency and re -watering treatments have a crucial regulatory effect on seed germination and seedling growth of wetland plant species through a dual mechanism. This study provides information for the formulation of an optimum re -watering strategy for wetland vegetation restoration in semi -arid areas of the world.
英文关键词	Hydrological condition Seed germination Seedling growth Wetland restoration Wetland vegetation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001255218500001
WOS关键词	DROUGHT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404474
推荐引用方式 GB/T 7714	Zhang, Mingye,Liu, Shuchen,An, Yu,et al. Re-watering solution facilitates seed germination and seedling growth of Carex schmidtii: Implication for species re-introduction in degraded semi-arid wetlands[J],2024,362.
APA	Zhang, Mingye.,Liu, Shuchen.,An, Yu.,Zhang, Dongjie.,Qi, Qing.,...&Tong, Shouzheng.(2024).Re-watering solution facilitates seed germination and seedling growth of Carex schmidtii: Implication for species re-introduction in degraded semi-arid wetlands.JOURNAL OF ENVIRONMENTAL MANAGEMENT,362.
MLA	Zhang, Mingye,et al."Re-watering solution facilitates seed germination and seedling growth of Carex schmidtii: Implication for species re-introduction in degraded semi-arid wetlands".JOURNAL OF ENVIRONMENTAL MANAGEMENT 362(2024).