干旱区生态环境知识资源中心(Arid): Seed mass modulates tolerance to water deficit in Luetzelburgia auriculata (Allemao) Ducke seedling

Arid

DOI	10.18671/scifor.v50.15
	Seed mass modulates tolerance to water deficit in Luetzelburgia auriculata (Allemao) Ducke seedling
	de Queiroz Lopes, Maria de Fatima; Silva Lima, Lucas Kennedy; Andrade Ferreira, Jean Telvio; da Silva, Toshik Iarley; Alcantara Bruno, Riselane de Lucena
通讯作者	Lopes, MDD
来源期刊	SCIENTIA FORESTALIS
ISSN	1413-9324
出版年	2022
卷号	50
英文摘要	In semi-arid regions, water deficit occurs for long periods, but the adaptation mechanisms developed by endemic species are little known. The objective of this study was to determine the tolerance of Luetzelburguia auriculata (Allemao) Ducke seedlings to water stress regarding germination and seedling establishment related to seeds' mass. The experiment was conducted in a completely randomized design in a 2 x 5 factorial scheme, with two classes of seeds (light < 0.35 g and heavy >= 0.35 g) and five osmotic potential levels (-0.2; -0.4; -0.6; -0.8 and -1.0 MPa), distributed in four replications of 25 seeds per plot. The following parameters were evaluated: germination rate (GR), first germination count (FGC), germination speed index (GSI), mean germination time (MGT), root length (RL), fresh and cotyledon dry mass (CFM/CDM) and fresh and dry root mass (RFM/RDM). As the osmotic potential became more negative, there was a reduction in physiological variables. The heavy seeds (>= 0.35 g) showed increases when compared to light seeds (<0.35 g), of 15.73, 22.94, 15.02, 23.33, 31.43, 21.43% for the variables GR, FGC, RL, CFM, CDM and RFM, respectively. Therefore, heavy seeds are more tolerant to water stress and should be prioritized for the recovery of degraded areas, especially in places with low rainfall.
英文关键词	Osmotic potential PEG 6000 solution Semi-arid Water stress
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000824700500002
WOS关键词	GERMINATION ; VIGOR ; TEMPERATURE
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394412
推荐引用方式 GB/T 7714	de Queiroz Lopes, Maria de Fatima,Silva Lima, Lucas Kennedy,Andrade Ferreira, Jean Telvio,et al. Seed mass modulates tolerance to water deficit in Luetzelburgia auriculata (Allemao) Ducke seedling[J],2022,50.
APA	de Queiroz Lopes, Maria de Fatima,Silva Lima, Lucas Kennedy,Andrade Ferreira, Jean Telvio,da Silva, Toshik Iarley,&Alcantara Bruno, Riselane de Lucena.(2022).Seed mass modulates tolerance to water deficit in Luetzelburgia auriculata (Allemao) Ducke seedling.SCIENTIA FORESTALIS,50.
MLA	de Queiroz Lopes, Maria de Fatima,et al."Seed mass modulates tolerance to water deficit in Luetzelburgia auriculata (Allemao) Ducke seedling".SCIENTIA FORESTALIS 50(2022).