干旱区生态环境知识资源中心(Arid): Effects of temperature, provenance, drought stress and salinity on seed germination response and early seedling stage of Thymus atlanticus (Ball) Roussine

Arid

DOI	10.1016/j.jarmap.2023.100482
	Effects of temperature, provenance, drought stress and salinity on seed germination response and early seedling stage of Thymus atlanticus (Ball) Roussine
	Ouahzizi, Brahim; Elbouny, Hamza; Sellam, Khalid; Alem, Chakib; Bakali, Abdelmonaim Homrani
通讯作者	Bakali, AH
来源期刊	JOURNAL OF APPLIED RESEARCH ON MEDICINAL AND AROMATIC PLANTS
EISSN	2214-7861
出版年	2023
卷号	34
英文摘要	Thymus atlanticus (Ball) Roussine is a valuable aromatic and medicinal species endemic to Morocco. Climate change and anthropogenic threats are factors driving this species to vulnerability and extinction. Therefore, the current study aims to examine the effects of provenance, temperature, drought stress, and salinity on the germination parameters of T. atlanticus seeds and seedling vigor. Seeds are collected from two provenances (Saghro and Tizi n'Telghemt). Treatments included six alternating temperature regimes (10/0, 15/05, 20/10, 25/15, 30/20, and 40/25 degrees C), five osmotic potentials of aqueous solutions of polyethylene glycol (PEG-6000) (0,-0.1,-0.3,-0.6, and-0.9 MPa), and five concentrations of sodium chloride (NaCl) (0, 1, 2.5, 5, and 7 g/l). The two-way ANOVA test reveals that alternating temperatures, drought, salinity, and their interactions with provenance almost all have a significant impact on germination parameters. However, no significant effect is registered for the interaction between provenance and alternating temperatures on the final germination per-centage (FGP). The highest FGP is recorded at several alternating temperatures (15/05, 20/10, 25/15, and 30/ 20 degrees C), and the maximum one is at 20/10 degrees C for both populations (Saghro and Tizi n'Telghemt, respectively 93% and 89%). This temperature regime is also the best in terms of germination time and speed. The most vigorous seedlings are obtained at 20/10 and 30/20 degrees C for Tizi n'Telghemt and Saghro populations, respectively. Con-cerning salinity and moisture stress, the results show that the increase in NaCl and PEG-6000 concentrations leads to a significant reduction in the germination capacity (FGP) and seedling vigor index as well as an increase in the mean germination time (MGT) of the two populations studied. The Saghro population tolerates the studied stresses better than the Tizi n'Telghemt population. These results may serve as guidelines for the domestication and rehabilitation of this medicinal plant.
英文关键词	Arid zone Osmotic potential Provenance Seedling vigor
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000995056400001
WOS关键词	GROWTH ; TOLERANCE ; SALT ; L.
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397128
推荐引用方式 GB/T 7714	Ouahzizi, Brahim,Elbouny, Hamza,Sellam, Khalid,et al. Effects of temperature, provenance, drought stress and salinity on seed germination response and early seedling stage of Thymus atlanticus (Ball) Roussine[J],2023,34.
APA	Ouahzizi, Brahim,Elbouny, Hamza,Sellam, Khalid,Alem, Chakib,&Bakali, Abdelmonaim Homrani.(2023).Effects of temperature, provenance, drought stress and salinity on seed germination response and early seedling stage of Thymus atlanticus (Ball) Roussine.JOURNAL OF APPLIED RESEARCH ON MEDICINAL AND AROMATIC PLANTS,34.
MLA	Ouahzizi, Brahim,et al."Effects of temperature, provenance, drought stress and salinity on seed germination response and early seedling stage of Thymus atlanticus (Ball) Roussine".JOURNAL OF APPLIED RESEARCH ON MEDICINAL AND AROMATIC PLANTS 34(2023).