Jackson Silva Nóbrega

Universidade Federal de Campina Grande

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Francisco Romário Andrade Figueiredo

Universidade Federal Rural do Semi-Árido

Reynaldo Teodoro de Fátima

Universidade Federal de Campina Grande

João Everthon da Silva Ribeiro

Universidade Federal Rural do Semi-Árido

Toshik Iarley da Silva

Universidade Federal de Campina Grande

Riselane de Lucena Alcantâra Bruno

Universidade Federal da Paraíba

Jean Télvio Andrade Ferreira

Universidade Federal de Campina Grande

Geovani Soares de Lima

Universidade Federal de Campina Grande

Lauriane Almeida dos Anjos Soares

Universidade Federal de Campina Grande

Thiago Jardelino Dias

Universidade Federal da Paraíba

Manoel Bandeira de Albuquerque

Universidade Federal da Paraíba

Cooperative Institutions

Universidade Federal de Campina Grande

135

Universidade Federal da Paraíba

Universidade Federal Rural do Semi-Árido

Universidade Federal de Viçosa

Universidade Estadual da Paraíba

Universidade Estadual Paulista (Unesp)

Universidade Federal Rural de Pernambuco

National Council for Scientific and Technological Development

Agrico (Netherlands)

Brazilian Agricultural Research Corporation

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Potencial fisiológico de sementes de melão pepino submetidas a salinidade

Research Society and Development (2020)

Jackson Silva Nóbrega Kilson Pinheiro Lopes Francisco Jean da Silva Paiva Joseano Graciliano da Silva Maíla Vieira Dantas

O cultivo do melão é uma das principais atividades agrícolas do Nordeste brasileiro, adaptando-se bem às condições ambientais da região. As variedades locais, também denominadas de crioulas, são muito utilizadas no consumo doméstico, dentre elas o melão pepino. Contudo, um dos fatores limitantes à produção agrícola na região é a salinidade dos solos e da água utilizada na irrigação, interferindo diretamente no processo germinativo das sementes. Nesse contexto, objetivou-se avaliar a influência da salinidade sobre a germinação e evolução do processo de embebição de sementes de melão pepino. O experimento foi conduzido em delineamento inteiramente casualizado com cinco condutividades elétricas da água de irrigação (CEa = 0,0; 0,5; 1,5; 3,5 e 4,5 dS m-1), com quatro repetições de 50 sementes. Avaliou-se a curva de absorção e incremento de água das sementes e a porcentagem, primeira contagem, índice de velocidade média, tempo médio, velocidade média e frequência relativa de germinação. Os dados foram submetidos à análise de variância e nos casos de significância a análise de regressão. O melão pepino é tolerante à salinidade, mas o vigor das sementes é reduzido com o aumento da CEa. A absorção de água apresenta duração de 41 horas e o incremento de 0,013 g de água por semente até o início protrusão radicular. Já na evolução da embebição das sementes foi observado um prolongamento de duração do processo com o aumento das concentrações salinas.

10.33448/rsd-v9i7.3735

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Effect of saline stress, and nitrogen and potassium fertilization on morphophysiology of Passiflora edulis Sims. f. flavicarpa Dreg.

Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences (2024)

Micaela Benigna Pereira Jackson Silva Nóbrega Reynaldo Teodoro de Fátima M.F.Q. Lopes Jean Télvio Andrade Ferreira

In Brazil semi-arid regions, excess of soluble salts is a limiting factor for the success of agricultural crops. An adequate supply of nutrients can cause positive responses in plant species under salt stress. The objective of this study was to analyze the effect of nitrogen and potassium on the morphophysiology of passion fruit (Passiflora edulis) seedlings subjected to saline stress. The design was a randomized blocks design, with treatments generated by the Box Central Composite Design matrix. Five electrical conductivities of irrigation water (ECw = 0.5, 0.98, 2.15, 3.32, and 3.80 dS m-1), five doses of nitrogen (N) and potassium (K) (0.0, 29.08, 100.0, 170.92, and 200.0%), in four replications. The combination of 200% NK stimulated the synthesis of chlorophyll a, and total chlorophyll under low salinity conditions (0.5 dS m-1). The chlorophyll a/b ratio was higher at ECw of 3.8 dS m-1 and under a concentration of 20.23% NK. The increase in water salinity from of 0.5 dS m-1 caused deleterious effects on the growth of passion fruit seedlings. The doses of NK between 100% and 120% improved the absolute growth rates of plant height and stem diameter, chlorophyll b, aerial dry matter, and total dry matter. The 200% dose of NK improved the leaf mass ratio. The combination of N and K applied foliar proved to be efficient in reducing the effects of salinity on the synthesis of photosynthetic pigments, providing better growth conditions for yellow passion fruit seedlings.

10.5039/agraria.v19i2a3696

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Crescimento inicial do milho sob aplicação de esterco bovino

Revista Ambientale (2019)

Lucimara Alves GOMES Francisco de Assis Da SILVA Francisco Hevilásio Freire Pereira José Eustáquio Campos Jackson Silva Nóbrega

Objetivou-se avaliar o crescimento inicial de plantas de milho aos 30 dias após a semeadura cultivadas em solo salino sob duas formas de aplicação de esterco bovino. O experimento foi realizado na Universidade Federal de Campina Grande (UFCG), Centro de Ciências e Tecnologia Agroalimentar (CCTA) Pombal-PB, no período de abril a maio de 2015, utilizando o híbrido da variedade de milho AG 1051. O arranjo experimental foi realizado em blocos casualizados em esquema fatorial 4 x 2, correspondente a 4 doses de esterco bovino (1, 3, 5 e 7% da capacidade do recipiente) e duas formas de aplicação (aplicado na camada superficial do solo e incorporação total ao solo), com 4 repetições, totalizando 32 unidades experimentais. O plantio foi realizado em vasos com capacidade de 10 dm3 de solos, semeado manualmente quatro sementes por vaso. As avaliações ocorreram aos trinta dias após a semeadura, sendo avaliada a altura de planta (AP), diâmetro do colmo (DC), Número de folhas (NF) e a massa seca de folha, caule e total. Quando comparado as formas de aplicação, as plantas de milho se desenvolveram melhor quando o esterco foi incorporado total ao solo. Foi observado que a dose de 7% promoveu um maior crescimento e a cúmulo de massa em plantas de milho aos 30 dias após a semeadura.

10.34032/ambientale.v11i2.94

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Aplicação foliar de prolina na mitigação do estrese salino nos índices fisiológicos de maracujazeiro-azedo

Semina Ciências Agrárias (2023)

Larissa Fernanda Souza Santos Geovani Soares de Lima Vera Lúcia Antunes de Lima André Alisson Rodrigues da Silva Lauriane Almeida dos Anjos Soares

A salinidade é um dos principais estresses abióticos que restringe o crescimento das plantas e causa perdas significativas no rendimento. Os efeitos do estresse salino são mais severos em regiões semiáridas, devido as condições climáticas e a ocorrência de fontes hídricas com teores elevados de sais. Neste contexto, a busca por estratégias que viabilizem o uso de águas salinas na irrigação é fundamental para garantir a necessidade de produção de alimentos. Assim, objetivou-se com este estudo avaliar os efeitos das aplicações foliar de concentrações de prolina nos índices fisiológicos de maracujazeiro-azedo irrigados com águas salinas na fase de formação de mudas. A pesquisa foi conduzida em casa de vegetação pertencente à Unidade Acadêmica de Engenharia Agrícola da Universidade Federal de Campina Grande, em Campina Grande – PB, utilizando-se o delineamento experimental inteiramente casualizado, em esquema fatorial 5 × 4, sendo cinco níveis de condutividade elétrica da água de irrigação CEa - (0,6; 1,2; 1,8; 2,4 e 3,0 dS m-1) e quatro concentrações de prolina (0, 5, 10 e 15 mM) com quatro repetições e cada parcela continha duas plantas, totalizando 160 unidades experimentais. A salinidade da água a partir de 0,6 dS m-1 reduziu o conteúdo relativo de água, trocas gasosas, e elevou o extravasamento de eletrólitos no limbo foliar das plantas de maracujazeiro-azedo. A irrigação com água de condutividade elétrica entre 1,3 e 1,8 dS m-1 estimulou a biossíntese de pigmentos fotossintéticos do maracujazeiro-azedo ‘BRS GA1’, aos 66 dias após a semeadura. A aplicação foliar de prolina nas concentrações variando de 4,5 e 6,5 mM aumentou a condutância estomática, a transpiração, a taxa de assimilação de CO2, a eficiência instantânea de carboxilação e os teores de clorofilas do maracujazeiro-azedo.

Passion fruit

10.5433/1679-0359.2023v44n5p1637

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Physiological quality of forage palm seeds and seedlings associated with the level of ploidy

Figshare (2022)

Ronimeire Tôrres da Silva Riselane de Lucena Alcantâra Bruno Rodrigo Garcia Silva Nascimento Jackson Silva Nóbrega Miguel Avelino Barbosa Neto

ABSTRACT. The forage palm is widely cultivated in semiarid regions. It has a basic chromosome number of x = 11 and polyploids are the main variation. It is propagated via vegetative reproduction, and sexual propagation is rarely used. The objective was to associate the physiological quality of seeds of different cultivars of forage palm with the level of ploidy in the genera Opuntia and Nopalea. The cultivars used were: diploids (2n = 22) ‘F8’, ‘F21’, and ‘IPA Sertânia’; tetraploids (2n = 44) ‘Clone 6 African Elephant Ear’, ‘Mexican Elephant Ear’, and ‘V19’, and octaploids (2n = 88) ‘Round’, ‘Giant’, and ‘IPA Clone 20’. Thousand seed weight, length, diameter, number of seeds per fruit, first count and emergence percentage, shoot and root length, fresh and dry mass, electrical conductivity, and length, width, and fresh and dry weight of cladodes were measured. A nested scheme design was used, with three levels of ploidy and three cultivars within each level. The ploidy level positively influenced the number of seeds per fruit and the physiological quality of the seeds. Cultivars behave differently within the same ploidy level.

10.6084/m9.figshare.20496062

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Physiological responses in sugar apple seedlings under irrigation with saline water and foliar nitrogen

Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences (2022)

Reynaldo Teodoro de Fátima Jackson Silva Nóbrega Jean Télvio Andrade Ferreira Wilma Freitas Celedônio Francisco Romário Andrade Figueiredo

Irrigation water salinity is one of the most limiting factors to agriculture in the Northeast region of Brazil, compromising photosynthesis in most crops, especially in the early growth phase, thus requiring the development of research to mitigate its harmful effects. In this context, this study aimed to evaluate the effects of nitrogen fertilization for the mitigation of the salinity on the physiology of sugar apple seedlings. The experimental design was in randomized blocks, using five levels ??of electrical conductivity of irrigation water (0.5; 1.15; 2.75; 4.35 and 5.0 dS m-1) and five nitrogen levels via foliar application (0.0; 0.33; 1.15; 1.97 and 2.3 g L-1) in four replications and two plants per plot, totaling nine combinations generated by the Box Central Composite Design. Despite stimulating chlorophyll formation 70 DAS, saline water inhibits the fluorescence of chlorophyll a in photosystem II. Foliar nitrogen fertilization at the level of 1.62 g L-1 mitigates the effects of salinity on the gas exchange properties of sugar apple seedlings. The fluorescence activity and chlorophyll indices show positive responses to foliar nitrogen fertilization in sugar apple seedlings 70 DAS.

Saline water

10.5039/agraria.v17i2a473

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Influence of essential oils on the quality of Vigna unguiculata L. (Walp.) seeds compared by traditional method, image and multivariate analysis

Brazilian Journal of Biology (2023)

Antônio Veimar da Silva C. M. da Silva Marianne Costa de Azevedo João Henrique Barbosa da Silva Jackson Silva Nóbrega

The extracts of medicinal plants are used for the treatment of seeds in order to reduce the action of phytopathogens and increase the vigor of the seeds. Currently, computerized image analysis has been used to assess the physiological quality of seed lots. The objective was to evaluate the efficiency of the Vigor-S® software in the evaluation of the physiological quality of cowpea seeds treated with essential oils, comparing with a traditional test and the principal component analysis. Two cowpea cultivars were analyzed, BRS Tumucumaque and BRS Guariba, treated with doses of natural extracts of Alfavaca, garlic, horsetail, citronella and pyroligneous acid. The traditional method consisted of evaluations for germination, first germination count, seedling emergence, emergence speed index, accelerated aging, fresh matter and dry matter of seedling and the image analysis for: seedling length, growth index, uniformity index, vigor index, and germination. A Principal component analysis was applied to reduce the number of variables. Horsetail, Alfavaca and citronella extracts were efficient in increasing the physiological quality of the seeds of at least one cultivar. The Vigor-S® software proved to be efficient compared to traditional tests to assess the physiological quality of seeds. Principal Component Analysis is an ally to identify the best extracts and doses to be used. The image analysis method proved to be effective when compared to the traditional method and can therefore be used.

Seed testing

10.1590/1519-6984.272616

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Citrullus lanatus morphophysiological responses to the combination of salicylic acid and salinity stress

Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences (2020)

J.E.S. Ribeiro Leonardo Vieira de Sousa Toshik Iarley da Silva Jackson Silva Nóbrega Francisco Romário Andrade Figueiredo

The salinity of irrigation water is one of modern agriculture’s major obstacles, as it can damage the plants metabolism and, consequently, its development. Currently there is a great demand for substances that may mitigate such effects, such as salicylic acid. Thus, this study aimed to evaluate the effects of salicylic acid application on watermelon plants (Citrullus lanatus L.) under salinity stress. The experimental design was a randomized block design, in an incomplete factorial scheme, with four replications and two plants per replicate. The treatments resulted from the combination of five concentrations of salicylic acid (0.00, 0.15, 0.50, 0.85 and 1.00 mM) and five electrical conductivities of the irrigation water (0.50, 1.01, 2.25, 3.49 and 4.00 dS m-1). The development, gas exchange, chlorophyll index and fluorescence were evaluated 30 days after transplanting. This data was submitted to analysis of variance and then confidence bands (confbands) and Pearson correlation were produced. The application of salicylic acid (up to 0.85 mM) promotes beneficial effects for the watermelon plants morphophysiology, while the increase in electrical conductivity of the irrigation water is harmful.

Citrullus lanatus

Malic acid

10.5039/agraria.v15i1a6638

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

Figshare (2023)

Jackson Silva Nóbrega Toshik Iarley da Silva Adriano Salviano Lopes Raimundo Nonato Moraes Costa João Everthon da Silva Ribeiro

ABSTRACT 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.

Nitrogen fertilizer

10.6084/m9.figshare.22225562

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Photochemical efficiency and growth of sugar apple under irrigation with saline water and foliar nitrogen

Comunicata Scientiae (2023)

Reynaldo Teodoro de Fátima Jackson Silva Nóbrega Jean Télvio Andrade Ferreira Wilma Freitas Celedônio João Everthon da Silva Ribeiro

Salt stress has compromised the worldwide expansion of fruit farming by causing damage to light energy regulation and crop growth, which can be mitigated by applying foliar nitrogen (N). From this perspective, this study aimed to evaluate the chlorophyll contents, fluorescence, and the growth of sugar apple seedlings under irrigation with saline water and foliar N fertilisation. The experiment was conducted in a plant nursery and following a randomized block design referring to five electrical conductivity levels of irrigation water (0.5, 1.15, 2.75, 4.35, and 5.0 dS m-1) and five foliar N levels (0.0, 0.33, 1.15, 1.97, and 2.3 g L-1), with four replications and two plants per plot, totaling nine combinations generated by the Box central composite design. Irrigation water salinity reduces the growth of sugar apple seedlings irrigated with conductivity levels over 1.7 dS m-1 at 90 days after emergence. Foliar N fertilisation increased the photochemical efficiency and growth of sugar apple seedlings. The foliar application of 1.93 g L-1 mitigate the deleterious effects of water salinity on the photochemical efficiency and growth of sugar apple seedlings.

Saline water

10.14295/cs.v14.4020

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