干旱区生态环境知识资源中心(Arid): Comparative study on germination, growth and gas exchanges of the tropics' tree Moringa oleifera and its desert relative Moringa peregrina under saline conditions

Arid

DOI	10.1016/j.sajb.2021.03.011
	Comparative study on germination, growth and gas exchanges of the tropics' tree Moringa oleifera and its desert relative Moringa peregrina under saline conditions
	Al-Shoaibi, Abdul Khaliq; Boutraa, Tahar
通讯作者	Al-Shoaibi, AK (corresponding author), Taibah Univ, Dept Biol, Fac Sci, Al Madinah Al Munawarah, Saudi Arabia.
来源期刊	SOUTH AFRICAN JOURNAL OF BOTANY
ISSN	0254-6299
EISSN	1727-9321
出版年	2021
卷号	139 页码:374-385
英文摘要	Salinity is a major environmental restraint in arid and semi-arid regions. Excessive amounts of salt in natural soils and in saline irrigation reduce seed germination and plant growth of most plants in the agricultural lands of these regions. The purpose of this research was to investigate the effect of salinity on seed germina-tion, growth performance, and physiological processes; such as chlorophyll content, chlorophyll fluorescence (Fv/F-m), and gas exchange of two Moringa species, Moringa oleifera and Moringa peregrina. Salinity treatments comprised 5 NaCl concentrations; (0, 50, 100, 150 and 200 mM). The germination test took place in petri dishes, while plants were grown in pots under controlled environments inside plant growth chambers. Results showed that seed germination was significantly affected by salinity. The effect of salinity on germina-tion performance differed between the two species. For example, none of the two Moringa seeds germinated at the high level of salinity (200 mM), while M. oleifera seeds germinated at 150 mM and those of M. peregrina showed no signs of germination. Results demonstrated that salinity significantly reduced all growth parame-ters of the two Moringa species. However, low salinity (50 mM) enhanced all growth parameters and the photosynthetic performance of the two Moringa species compared to the control plants. The chlorophyll con -tent was not affected by salinity for both species, but the saturation rate of photosynthesis was inhibited, and in particular under high NaCl concentration. The effect of salinity on quantum yield followed the same effect pattern as for the saturation rate of photosynthesis, while the (Fv/F-m) was not significantly affected. The two species of Moringa, M. oleifera and M. peregrina differed in the mechanisms of salt tolerance; for exam-ple, M. oleifera expressed high salt tolerance at germination phase, whereas M. peregrina demonstrated high photosynthesis rates at low and medium levels of salinity. The physiological responses of M. peregrina to withstand medium levels of salinity makes it a more successful species in harsh environments such as that of Saudi Arabia. (C) 2021 SAAB. Published by Elsevier B.V. All rights reserved.
英文关键词	Moringa oleifera: Moringa peregrina Salinity Germination Photosynthesis Chlorophyll fluorescence
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000662214700019
WOS关键词	SEED-GERMINATION ; WATER ; SALT ; TOLERANCE ; TOMATO ; LEAF ; OIL ; PLANTS ; STRESS ; PHOTOSYNTHESIS
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/2XILL650/351797
作者单位	[Al-Shoaibi, Abdul Khaliq; Boutraa, Tahar] Taibah Univ, Dept Biol, Fac Sci, Al Madinah Al Munawarah, Saudi Arabia
推荐引用方式 GB/T 7714	Al-Shoaibi, Abdul Khaliq,Boutraa, Tahar. Comparative study on germination, growth and gas exchanges of the tropics' tree Moringa oleifera and its desert relative Moringa peregrina under saline conditions[J],2021,139:374-385.
APA	Al-Shoaibi, Abdul Khaliq,&Boutraa, Tahar.(2021).Comparative study on germination, growth and gas exchanges of the tropics' tree Moringa oleifera and its desert relative Moringa peregrina under saline conditions.SOUTH AFRICAN JOURNAL OF BOTANY,139,374-385.
MLA	Al-Shoaibi, Abdul Khaliq,et al."Comparative study on germination, growth and gas exchanges of the tropics' tree Moringa oleifera and its desert relative Moringa peregrina under saline conditions".SOUTH AFRICAN JOURNAL OF BOTANY 139(2021):374-385.