干旱区生态环境知识资源中心(Arid): Physiological responses to salinity among warm-season turfgrasses of contrasting salinity tolerance

Arid

DOI	10.1111/jac.12501
	Physiological responses to salinity among warm-season turfgrasses of contrasting salinity tolerance
	Chavarria, Manuel; Wherley, Benjamin; Jessup, Russell; Chandra, Ambika
通讯作者	Chavarria, M (corresponding author), Univ Florida, Agron Dept, Gainesville, FL 32611 USA.
来源期刊	JOURNAL OF AGRONOMY AND CROP SCIENCE
ISSN	0931-2250
EISSN	1439-037X
出版年	2021
英文摘要	There is increasing need to understand physiological mechanisms of warm-season turfgrass species for potential use in salt-affected soils due to increased use of recycled water for irrigation in arid and semi-arid regions. Greenhouse screenings previously conducted during 2014 and 2015 at Texas A&M University, College Station, TX, and determined relative salinity tolerance among 45 experimental genotypes representing four warm-season turfgrass species under salinity levels ranging from 2.5 to 45 dS m(-1). From that study, eight genotypes (two genotypes representing the highest and lowest relative salinity tolerance from each of four species) were advanced for additional evaluations aimed at characterizing physiological responses to salinity in this study. Genotypes included 'Celebration(R)' and 'UGB79' bermudagrass (Cynodon spp.), 'DALZ1313' and 'Zeon' zoysiagrass (Zoysia spp.), 'UGP3' and 'UGP38' seashore paspalum (Paspalum vaginatum), and 'Floratam' and 'Palmetto' St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze]. Grasses were grown in the greenhouse and sub-irrigated daily for 4 weeks at salinity levels of 2.5, 15 and 30 dS m(-1). Responses including visual turf quality, shoot growth rates, salt excretion rates, root and shoot tissue nutrient concentrations, as well as root and shoot Na:K were characterized. Results showed that all grasses adjusted osmotically under increasing salinity levels. However, differences in Na:K were noted among species, with bermudagrass and seashore paspalum genotypes maintaining proportionally lower Na:K in roots and shoots than zoysiagrass and St. Augustinegrass under salinity stress. Salt excretion rates also increased at increasing salinity in zoysiagrass and bermudagrass, with greater salt excretion observed in the salinity-tolerant genotypes of each species. The results demonstrate that salt tolerance is complex, and show a variety of salt tolerance mechanisms are employed by these warm-season species.
英文关键词	bermudagrass seashore paspalum St Augustinegrass zoysiagrass
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000648923700001
WOS关键词	WATER ; IRRIGATION ; GROWTH ; STRESS
WOS类目	Agronomy
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/2XILL650/352297
作者单位	[Chavarria, Manuel] Univ Florida, Agron Dept, Gainesville, FL 32611 USA; [Wherley, Benjamin; Jessup, Russell] Texas A&M Univ, Dept Soil & Crop Sci, College Stn, TX 77843 USA; [Chandra, Ambika] Texas A&M AgriLife Res Ctr, Dallas, TX USA
推荐引用方式 GB/T 7714	Chavarria, Manuel,Wherley, Benjamin,Jessup, Russell,et al. Physiological responses to salinity among warm-season turfgrasses of contrasting salinity tolerance[J],2021.
APA	Chavarria, Manuel,Wherley, Benjamin,Jessup, Russell,&Chandra, Ambika.(2021).Physiological responses to salinity among warm-season turfgrasses of contrasting salinity tolerance.JOURNAL OF AGRONOMY AND CROP SCIENCE.
MLA	Chavarria, Manuel,et al."Physiological responses to salinity among warm-season turfgrasses of contrasting salinity tolerance".JOURNAL OF AGRONOMY AND CROP SCIENCE (2021).