Gas exchanges in sugar apple (Annona squamosa L.) subjected to salinity stress and nitrogen fertilization

Figueiredo, Francisco Romário Andrade; Gonçalves, Anderson Carlos de Melo; Ribeiro, João Everthon da Silva; Silva, Toshik Iarley da; Nóbrega, Jackson Silva; Dias, Thiago Jardelino; Albuquerque, Manoel Bandeira de

doi:10.21475/ajcs.19.13.12.p1754

Cited by 10 publications

(11 citation statements)

References 21 publications

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“…Photochemical quenching was also stimulated by foliar nitrogen fertilization, with the highest value of 0.5576 observed at a nitrogen dose of 400 mg L -1 , indicating that the application was beneficial to the photosynthetic apparatus of basil plants (Figure 4D). An increase in photochemical efficiency due to nitrogen supply has been observed in Oryza sativa L. (Peng et al, 2021), Anonna squamosa L. (Figueiredo et al, 2019), Zea mays L. (Wu et al, 2019), and Malpighia emarginata L. (Sá et al, 2018). In the current study, it was found that in addition to the increase in the qN, nitrogen fertilization also increased the ETR, F v /F m , and qP, thereby improving the photochemical performance of the basil plants.…”

Section: Resultssupporting

confidence: 63%

Foliar nitrogen fertilization attenuating harmful effects of salt stress on purple basil

Nóbrega

Silva

Lopes

et al. 2023

Rev. bras. eng. agríc. ambient.

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Salinity can have detrimental effects on plant development. To minimize this damage, strategies such as balanced maintenance of plants’ nutritional status have been proposed previously. The objective of this study is to investigate whether the optimization of foliar nitrogen fertilization can promote the growth and photochemical efficiency of purple basil subjected to salt stress. The experiment was performed using a randomized block design with an incomplete 5 × 5 factorial arrangement generated through experimental matrix Central Composite Design with two parameters: salinity of irrigation water at 0.5, 0.81, 2.75, 4.69, and 5.50 dS m-1; and nitrogen doses at 0, 58.58, 200, 341.42, and 400 mg L-1. It was found that an increase in the salinity of irrigation water reduced the growth and photochemical efficiency of purple basil. However, the foliar application of nitrogen at the concentration of 400 mg L-1 attenuated the harmful effects of salinity on both the absolute and relative growth rates of stem diameter, the relative growth of plant height, and chlorophyll A fluorescence. These results showed that foliar nitrogen fertilization is a suitable strategy to help mitigate salt stress in basil plants.

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Section: Resultssupporting

confidence: 63%

Foliar nitrogen fertilization attenuating harmful effects of salt stress on purple basil

Nóbrega

Silva

Lopes

et al. 2023

Rev. bras. eng. agríc. ambient.

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“…Although the use of saline water may be an alternative in regions that suffer from water scarcity, its use interferes negatively with the growth and development of sweetsop (Silva et al 2018) since salinity (4 dS m −1 ) reduces chlorophylls a and b, and consequently the quantum efficiency of photosystem II (Figueiredo et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…imbalance due to the accumulation of sodium, chlorine, and sulfates in plant tissues that decreases osmotic potential, which, by turn, reduces the absorption of nutrients, such as nitrogen, calcium, and potassium, and increases ionic toxicity and oxidative stress (Craig Plett and Møller 2010;Cabot et al 2014;Figueiredo et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Increases K+ in the Shoot and Improves Salinity Tolerance in Sweetsop Seedlings

Andrade

Pereira

Maia

et al. 2021

J Plant Growth Regul

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The use of brackish waters is an alternative for the cultivation of fruit-bearing plants in semi-arid regions; nonetheless, sweetsop trees (Annona squamosa L.) are sensitive to these types of waters. However, phosphate fertilization can be a technique used to mitigate the harmful effects of salinity. Thus, our objective was to evaluate the application of phosphorus to mitigate the salinity in irrigation water. The experiment was conducted in a randomized block design, with six treatments S1 (2.5 dS m −1 ) S2 = (4 dS m −1 ), SP1 (2.5 dS m −1 + 1.35 g dm −3 of P 2 O 5 ), SP2 = (4 dS m −1 + 1.35 g dm −3 of P 2 O 5 ), T (control), and P (1.35 g dm −3 of P 2 O 5 ). After 78 days of transplantation, the seedlings were evaluated for the total dry weight (TDW), leaf area (LA), salt tolerance index (STI), water use efficiency (WUE), Na + and K + levels in the shoot and root, chlorophylls a and b, maximum (Fm) and variable (Fv) chlorophyll fluorescence, quantum efficiency of photosystem II (Fv/Fm), total soluble sugar (TSS), total free amino acids (TFAA), proline, and glycine betaine (GB). It was observed that plants treated with SP1 and SP2 show higher results of TDW, LA, STI, WUE, and K in the shoot, Chl a, Chl b, Fm, Fv, Fv/Fm, TFAA, proline, GB, and TSS in relation to S1 and S2. The presence of phosphorus under salinity conditions increased the K + concentration in the shoot, which was responsible for the improvement of pigments as well as increasing the quantum efficiency of photosystem II and carbohydrates, maintaining the growth and, consequently, the salinity tolerance of the sweetsop seedlings.

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“…A redução nos índices de fluorescência da clorofila a em função do estresse salino também foi constatado em outras frutíferas, como em graviola (Annona squamosa L.) em que a CEa de 4,0 dS m -1 reduziu severamente a F0, Fv e o rendimento quântico do FSII (FIGUEIREDO et al, 2019). Dias et al (2019) constataram que a CEa de 3,8 dS m -1 promoveu a redução do Fm e Fv/Fm em plantas de acerola (Malpighia emarginata DC).…”

Section: Resultsunclassified

Crescimento e Eficiência Fotoquímica em Mudas de Maracujazeiro Submetidas em Níveis de Salinidade e Adubação Foliar

et al. 2022

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O maracujá é uma das principais frutíferas produzidas e consumidas no Brasil, sendo que a região Nordeste é considerada a de maior produção. No entanto, o excesso de sais no solo e nas águas utilizadas na irrigação da região é prejudicial ao desenvolvimento das plantas. Nesse sentido, a adubação com nitrogênio (N) e potássio (K) se torna uma estratégia para minimizar os danos promovidos pelo estresse salino. Objetivou-se avaliar o crescimento e a eficiência fotoquímica de mudas de maracujazeiro submetidas ao estresse salino e adubação foliar com nitrogênio e potássio. O experimento foi realizado no Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia-PB. O delineamento experimental utilizado foi o de blocos casualizados, em esquema fatorial incompleto, com cinco níveis de condutividade elétrica da água de irrigação (CEa = 0,50; 0,98; 2,15; 3,32 e 3,80 dS m-1) e cinco doses de N e K (0,0; 29,08; 100; 170,92 e 200%), totalizando nove combinações, geradas através da matriz Composto Central de Box, com quatro repetições e duas plantas por parcela. Foram avaliados a altura de plantas, o diâmetro caulinar, a área foliar, a razão de área foliar, a fluorescência inicial, a máxima e variável, a razão Fv/F0 e o rendimento quântico do fotossistema II. A salinidade promove redução no crescimento e nos índices de fluorescência da clorofila a das mudas de maracujazeiro. A adubação foliar com N e K ocasiona maior crescimento e incrementos nos índices de fluorescência da clorofila a. Palavras-chave: Passiflora edulis f. favicarpa. Estresse Salino. Fluorescência da Clorofila. Abstract Passion fruit is one of the main fruit produced and consumed in Brazil, and the Northeast region is considered the one with the highest production. However, the excess of salts in the soil and water used for irrigation in the region is detrimental to the plants development. In this sense, fertilization with nitrogen (N) and potassium (K) becomes a strategy to minimize the damage caused by salt stress. The objective was to evaluate the growth and photochemical efficiency of passion fruit seedlings submitted to saline stress and foliar fertilization with nitrogen and potassium. The experiment was carried out at Center for Agricultural Sciences, Federal University of Paraíba, Areia-PB. The experimental design used was randomized blocks, in an incomplete factorial scheme, with five levels of electrical conductivity of irrigation water (CEa = 0.50; 0.98; 2.15; 3.32 and 3.80 dS m- 1) and five doses of N and K (0.0; 29.08; 100; 170.92 and 200%), totaling nine combinations, generated through the Central Box Compound matrix, with four replicates and two plants per plot. Plant height, stem diameter, leaf area, leaf area ratio, initial, maximum and variable fluorescence, Fv / F0 ratio and quantum yield of photosystem II were evaluated. Salinity promotes a reduction in chlorophyll a growth and fluorescence rates of passion fruit seedlings. Foliar fertilization with N and K causes greater growth and increases in chlorophyll a fluorescence indices. Keywords: Passiflora edulis f. favicarpa. Saline Stress. Chlorophyll Fluorescence.

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Gas exchanges in sugar apple (Annona squamosa L.) subjected to salinity stress and nitrogen fertilization

Cited by 10 publications

References 21 publications

Foliar nitrogen fertilization attenuating harmful effects of salt stress on purple basil

Foliar nitrogen fertilization attenuating harmful effects of salt stress on purple basil

Phosphorus Increases K+ in the Shoot and Improves Salinity Tolerance in Sweetsop Seedlings

Crescimento e Eficiência Fotoquímica em Mudas de Maracujazeiro Submetidas em Níveis de Salinidade e Adubação Foliar

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