干旱区生态环境知识资源中心(Arid): GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION

Arid

DOI	10.1590/1983-21252019v32n216rc
	GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
	Dias, Adaan Sudario 1; de Lima, Geovani Soares 2; Alves Pinheiro, Francisco Wesley 1; Gheyi, Hans Raj 3; dos Anjos Soares, Lauriane Almeida 2
通讯作者	de Lima, Geovani Soares
来源期刊	REVISTA CAATINGA
ISSN	0100-316X
EISSN	1983-2125
出版年	2019
卷号	32 期号:2 页码:429-439
英文摘要	Water resources in the semi-arid region of Northeast Brazil commonly contain high salt concentrations, compromising the quality of water for agriculture. Thus, adopting techniques that make the use of these resources feasible in agriculture is fundamental. The present study aimed to evaluate the gas exchanges, quantum yield and photosynthetic pigments of grafted West Indian cherry subjected to salt stress and potassium fertilization under greenhouse conditions in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in randomized blocks, composed of two levels of electrical conductivity - ECw (0.8 and 3.8 dS m(-1)) of water and four doses of potassium (50, 75, 100 and 125% of the dose recommended for the crop), with three replicates. The dose relative to 100% corresponded to 19.8 g of K2O per plant. Gas exchanges, chlorophyll a fluorescence and photosynthetic pigments of West Indian cherry are negatively affected by irrigation using water with electrical conductivity of 3.8 dS m(-1), which compromises the photosynthetic apparatus of the plant, a situation evidenced by the reduction in photosystem II quantum efficiency. Increasing potassium doses led to increments in transpiration, chlorophyll a maximum fluorescence and chlorophyll b content in West Indian cherry grown under salt stress, but do not attenuate the negative effects of irrigation with 3.8 dS m(-1) water on its potential photochemical efficiency.
英文关键词	Malpighia emarginata Physiology Potassium Salinity
类型	Article
语种	英语
国家	Brazil
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000468613800016
WOS关键词	YELLOW PASSION-FRUIT ; CHLOROPHYLL FLUORESCENCE ; WATER ; ACCUMULATION ; GENOTYPES ; NITROGEN
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/2XILL650/218493
作者单位	1.Univ Fed Campina Grande, Ctr Technol & Nat Resources, Campina Grande, PB, Brazil; 2.Univ Fed Campina Grande, Ctr Acad Unit Agr Sci, Ctr Agrifood Sci & Technol, Pombal, PB, Brazil; 3.Univ Fed Reconcavo Bahia, Nucleus Soil & Water Engn, Cruz Das Almas, BA, Brazil
推荐引用方式 GB/T 7714	Dias, Adaan Sudario,de Lima, Geovani Soares,Alves Pinheiro, Francisco Wesley,et al. GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION[J],2019,32(2):429-439.
APA	Dias, Adaan Sudario,de Lima, Geovani Soares,Alves Pinheiro, Francisco Wesley,Gheyi, Hans Raj,&dos Anjos Soares, Lauriane Almeida.(2019).GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION.REVISTA CAATINGA,32(2),429-439.
MLA	Dias, Adaan Sudario,et al."GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION".REVISTA CAATINGA 32.2(2019):429-439.