干旱区生态环境知识资源中心(Arid): Potential of Biochar Application to Mitigate Salinity Stress in Eggplant

Arid

DOI	10.21273/HORTSCI15398-20
	Potential of Biochar Application to Mitigate Salinity Stress in Eggplant
	Parkash, Ved; Singh, Sukhbir
通讯作者	Singh, S (corresponding author), Texas Tech Univ, Dept Plant & Soil Sci, Lubbock, TX 79409 USA.
来源期刊	HORTSCIENCE
ISSN	0018-5345
EISSN	2327-9834
出版年	2020
卷号	55 期号:12 页码:1946-1955
英文摘要	Salinity stress is among the major abiotic stresses prevailing in arid and semiarid areas such as the southern high plains of the United States. In these areas, both declining quality of groundwater and cultivation practices have resulted in increased accumulation of salts in the root zone. The occurrence of excessive salts in the root zone is detrimental for plant growth and economic yield. Recently, biochar has received a great consideration as a soil amendment to mitigate the detrimental impacts of salinity stress. However, the effectiveness of biochar to mitigate the salinity stress depends on the feedstock type, pyrolysis temperature and time, soil type and properties, and plant species. Therefore, a pot experiment in a greenhouse was conducted to 1) examine the effects of salinity stress on physiology, shoot and root growth, and yield of eggplant (Solanum melongena L.), and 2) evaluate the potential of hardwood biochar and softwood biochar to mitigate the damaging effects of salinity stress on eggplant. The experiment was conducted in a split-plot design with three salinity levels of irrigation water [S-0 (control, 0.04 dS.m(-1)), S-1 (2 dS.m(-1)), and S-2 (4 dS.m(-1))] as main-plot factor and three biochar treatments [B-0 (control, non-biochar), B-h (hardwood biochar), and B-s (softwood biochar)] as subplot factor with four replications. Results showed that stomatal conductance (g(S)) and photosynthesis rate decreased significantly, while leaf temperature and electrolyte leakage increased significantly with increase in irrigation water salinity levels. Root growth (root length density and root surface area density), shoot growth (plant height, stem diameter, and leaf area), and yield of eggplant declined with increase in levels of salinity stress. Biochar application helped to enhance g(S) and photosynthesis rate, and to decrease leaf temperature and electrolyte leakage in leaf tissues of plants. This resulted in better root growth, shoot growth, and fruit yield of eggplant in treatments amended with biochar than non-biochar (control) treatment. There was no significant difference in the effect of two types of biochars (hardwood and softwood biochar) on physiology, root growth, shoot growth, and yield of eggplant. Therefore, it can be concluded that softwood and hardwood biochars could be used to minimize the detrimental impacts of salinity stress in eggplant.
英文关键词	salinity stress biochar photosynthesis stomatal conductance leaf temperature shoot growth root growth
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:000595638300010
WOS关键词	SOLANUM-MELONGENA L. ; SALT STRESS ; WATER RELATIONS ; ROOT-GROWTH ; LIPID-PEROXIDATION ; DEFICIT IRRIGATION ; SOIL PROPERTIES ; GAS-EXCHANGE ; ION CONTENT ; TOMATO
WOS类目	Horticulture
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369150
作者单位	[Parkash, Ved; Singh, Sukhbir] Texas Tech Univ, Dept Plant & Soil Sci, Lubbock, TX 79409 USA
推荐引用方式 GB/T 7714	Parkash, Ved,Singh, Sukhbir. Potential of Biochar Application to Mitigate Salinity Stress in Eggplant[J],2020,55(12):1946-1955.
APA	Parkash, Ved,&Singh, Sukhbir.(2020).Potential of Biochar Application to Mitigate Salinity Stress in Eggplant.HORTSCIENCE,55(12),1946-1955.
MLA	Parkash, Ved,et al."Potential of Biochar Application to Mitigate Salinity Stress in Eggplant".HORTSCIENCE 55.12(2020):1946-1955.