气候变化领域集成服务门户(CCPortal): Effect of salt stress on photosynthesis and related physiological characteristics of Lycium ruthenicum Murr

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DOI	10.1080/09064710.2017.1326521
	Effect of salt stress on photosynthesis and related physiological characteristics of Lycium ruthenicum Murr
	Luo, Jun; Huang, Cui Hua; Peng, Fei; Xue, Xian; Wang, Tao
发表日期	2017
ISSN	0906-4710
EISSN	1651-1913
卷号	67 期号:8
英文摘要	Halophytes could withstand the hyper-salinity soil and survive widely in areas where soil salt content is high because they can endure salt stress to a certain extent. Lycium ruthenicum Murr (LRM), with significant nutritional and medicinal values, is one of the most important native halophytes in the arid oasis-desert transition zone of northwestern China. In recent years, artificially planting LRM has been being popular since it can improve saline-alkalized soil and increase the income of local farmers as well. More efforts about the artificial planting of LRM are put in enhancing the productivity and quality, but survivorship of LRM seedling by appropriate saline irrigation is still unclear in arid areas. A field experiment was conducted to explore the responses of LRM to four levels of saline water irrigation (Ec of irrigation water: 2.00 mu s cm(-1) (T-1), 4.51 mu s cm(-1) (T-2), 6.89 mu s cm(-1) (T-3), and 9.00 mu s cm(-1) (T-4)) during the growing seasons in 2014 and 2015. The average soil electrical conductivity (Ec(a)) in 0-60 cm depth increased while the biomass of LRM decreased with increasing Ec of irrigation water, and the differences of Ec(a) among treatments decreased with increasing salinity level. In contrast to previous research findings, salt stress had more significant effect on photosynthesis and chlorophyll fluorescence of LRM, in which great changes were caused by a threshold following the increased salinity. Most of the light energy absorbed by LRM was used for photosynthesis and heat dissipation when soil salinity was low, what was used for chlorophyll fluorescence when soil salinity was high. The results of the experiment indicate that T-2 was the most suitable irrigation method for artificially planting LRM in the field, and it's the key to save freshwater resources in arid areas and improve the production of saline-alkali land.
关键词	Salt stress salinity photosynthesis chlorophyll fluorescence Lycium ruthenicum Murr
学科领域	Agriculture
语种	英语
WOS研究方向	Agronomy ; Soil Science
来源期刊	ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111904
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Luo, Jun,Huang, Cui Hua,Peng, Fei,et al. Effect of salt stress on photosynthesis and related physiological characteristics of Lycium ruthenicum Murr[J]. 中国科学院西北生态环境资源研究院,2017,67(8).
APA	Luo, Jun,Huang, Cui Hua,Peng, Fei,Xue, Xian,&Wang, Tao.(2017).Effect of salt stress on photosynthesis and related physiological characteristics of Lycium ruthenicum Murr.ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,67(8).
MLA	Luo, Jun,et al."Effect of salt stress on photosynthesis and related physiological characteristics of Lycium ruthenicum Murr".ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE 67.8(2017).