干旱区生态环境知识资源中心(Arid): Potassium fertilization as salt stress attenuator in sour passion fruit

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DOI	10.1590/0103-8478cr202107691
	Potassium fertilization as salt stress attenuator in sour passion fruit
	de Souza, Weslley Bruno Belo; de Lima, Geovani Soares; Paiva, Francisco Jean da Silva; Soares, Lauriane Almeida dos Anjos; de Fatima, Reynaldo Teodoro; da Silva, Andre Alisson Rodrigues; Gheyi, Hans Raj; Fernandes, Pedro Dantas
通讯作者	de Lima, GS
来源期刊	CIENCIA RURAL
ISSN	0103-8478
EISSN	1678-4596
出版年	2023
卷号	53 期号:9
英文摘要	Water scarcity associated with irregular rainfall in the semi-arid region of Northeastern Brazil stands out as a limiting factor for agricultural production. Thus, the use of waters with high concentration of salts is an alternative to expand irrigated agriculture in this region. In this context, this study evaluated the water status, intercellular electrolyte leakage, photosynthetic pigments, and gas exchange of 'BRS SC1' sour passion fruit as a function of irrigation with water of different levels of salinity and potassium doses. The experiment was carried out in pots adapted as drainage lysimeters under field conditions at the Experimental Farm of the Federal University of Campina Grande in Sao Domingos - PB, Brazil. The experimental design was randomized blocks, in a 5 x 4 factorial scheme, whose treatments were obtained by combining two factors: five levels of electrical conductivity of irrigation water -ECw (0.3, 1.1, 1.9, 2.7, and 3.5 dS m-1), associated with four potassium doses (60, 80, 100, and 120% of the recommendation), with three replicates. Water with electrical conductivity greater than 0.3 dS m-1 reduced the relative water content, chlorophyll a and chlorophyll b contents, CO2 assimilation rate, and instantaneous water use efficiency of 'BRS SC1' sour passion fruit plants. The estimated potassium dose of 85% of the recommendation (equivalent to 293 g per plant per year) mitigated the deleterious effects of salt stress on stomatal conductance, transpiration, internal CO2 concentration, and instantaneous carboxylation efficiency of passion fruit 'BRS SC1'.
英文关键词	salt stress attenuation semi-arid region Passiflora edulis Sims
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000934052300001
WOS关键词	SALINE WATER IRRIGATION ; PHOTOSYNTHETIC PIGMENTS ; GAS EXCHANGES ; GROWTH ; TOLERANCE ; SEEDLINGS
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/2XILL650/395765
推荐引用方式 GB/T 7714	de Souza, Weslley Bruno Belo,de Lima, Geovani Soares,Paiva, Francisco Jean da Silva,et al. Potassium fertilization as salt stress attenuator in sour passion fruit[J],2023,53(9).
APA	de Souza, Weslley Bruno Belo.,de Lima, Geovani Soares.,Paiva, Francisco Jean da Silva.,Soares, Lauriane Almeida dos Anjos.,de Fatima, Reynaldo Teodoro.,...&Fernandes, Pedro Dantas.(2023).Potassium fertilization as salt stress attenuator in sour passion fruit.CIENCIA RURAL,53(9).
MLA	de Souza, Weslley Bruno Belo,et al."Potassium fertilization as salt stress attenuator in sour passion fruit".CIENCIA RURAL 53.9(2023).