干旱区生态环境知识资源中心(Arid): Gas exchange, photosynthetic pigments, and photochemical efficiency of sesame under salt stress and phosphate fertilization

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DOI	10.5433/1679-0359.2022v43n3p1237
	Gas exchange, photosynthetic pigments, and photochemical efficiency of sesame under salt stress and phosphate fertilization
	Dias, Adaan Sudario; de Lima, Geovani Soares; da Silva, Saulo Soares; dos Anjos Soares, Lauriane Almeida; Garofalo Chaves, Lucia Helena; Gheyi, Hans Raj; de Lacerda, Cassiano Nogueira; Fernandes, Pedro Dantas
通讯作者	de Lima, GS
来源期刊	SEMINA-CIENCIAS AGRARIAS
ISSN	1676-546X
EISSN	1679-0359
出版年	2022
卷号	43 期号:3 页码:1237-1256
英文摘要	Salt stress is a threat to irrigated agriculture, especially in semi-arid regions, as it can cause irreversible damage to the photosynthetic apparatus at any stage of plant development, reducing chlorophyll biosynthesis, which compromises the photochemical efficiency and the photosynthetic process of plants. In this respect, phosphorus fertilization stands out as an alternative to mitigate the effects of salt stress on plants. Therefore, the present study investigated the growth, gas exchange, photosynthetic pigments, and photochemical efficiency of sesame cv. BRS Seda irrigated with saline water and fertilized with phosphorus. The experiment was carried out in pots adapted as lysimeters in a greenhouse in Pombal - PB, Brazil. Treatments were distributed in randomized blocks and analyzed in a 5 x 4 factorial arrangement with five levels of electrical conductivity of water (ECw: 0.3, 1.1, 1.9, 2.7, and 3.5 dS m(-1)) and four phosphorus rates (40, 70, 100, and 130% of the recommended dose for pot trials), in three replicates. The 100% recommendation consisted of applying 300 mg P2O5 kg(-1) of soil. Sesame growth, chloroplast pigments, and gas exchange decreased with water salinity above 0.3 dS m(-1). The application of 100 and 130% of the recommended phosphorus rate minimized the effects of salt stress on CO2 assimilation rate and photosynthetic pigment synthesis. The increase from 40 to 130% of the recommended phosphorus rate did not change the photochemical efficiency of sesame cv. BRS Seda at 60 days after sowing.
英文关键词	Chlorophyll content Phosphorus rates Photosynthesis Saline waters
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:000777491300001
WOS关键词	SALINE WATER IRRIGATION ; WEST-INDIAN CHERRY ; ANNONA-SQUAMOSA L. ; CHLOROPLAST PIGMENTS ; QUANTUM EFFICIENCY ; PHOTOSYSTEM-II ; NITROGEN ; GROWTH ; PHOSPHORUS ; QUALITY
WOS类目	Agriculture, Multidisciplinary
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/2XILL650/394477
推荐引用方式 GB/T 7714	Dias, Adaan Sudario,de Lima, Geovani Soares,da Silva, Saulo Soares,et al. Gas exchange, photosynthetic pigments, and photochemical efficiency of sesame under salt stress and phosphate fertilization[J],2022,43(3):1237-1256.
APA	Dias, Adaan Sudario.,de Lima, Geovani Soares.,da Silva, Saulo Soares.,dos Anjos Soares, Lauriane Almeida.,Garofalo Chaves, Lucia Helena.,...&Fernandes, Pedro Dantas.(2022).Gas exchange, photosynthetic pigments, and photochemical efficiency of sesame under salt stress and phosphate fertilization.SEMINA-CIENCIAS AGRARIAS,43(3),1237-1256.
MLA	Dias, Adaan Sudario,et al."Gas exchange, photosynthetic pigments, and photochemical efficiency of sesame under salt stress and phosphate fertilization".SEMINA-CIENCIAS AGRARIAS 43.3(2022):1237-1256.