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| Sá,Francisco V. da S.; Brito,Marcos E. B.; Figueiredo,Lizaiane C. de; Melo,Alberto S. de; Silva,Luderlândio de A.; Moreira,Rômulo C. L.. |
| ABSTRACT The objective was to study the biochemical changes and dry matter content in lemon and mandarin hybrids under salt stress during rootstock formation. For this, a study was conducted in randomized complete block, using a 2 x 5 factorial scheme, with two salinity levels (0.3 and 4.0 dS m-1) applied in five citrus rootstock genotypes (1. TSKC x CTARG - 019; 2. LRF; 3. TSKC x (LCR x TR) - 040; 4. LCRSTC and 5. LVK), with three replicates and four plants per plot. At 90 days after sowing, saline treatments started to be applied and continued until 120 days after sowing, the moment in which the plants were collected for evaluation of biochemical characteristics and phytomass accumulation. The increase in water salinity negatively affected the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus spp.; Salinity; Chlorophyll and carotenoids; Water status. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000400249 |
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| Sá,Francisco V. da S.; Brito,Marcos E. B.; Silva,Luderlândio de A.; Moreira,Rômulo C. L.; Paiva,Emanoela P. de; Souto,Lauter S.. |
| ABSTRACT The salinity has complex effects on the physiological, nutritional and hormonal interactions of plants. This study aimed to evaluate the mitigating action of exogenous application of different types and concentrations of phytohormones on Carica papaya under salt stress. The experiment was conducted in greenhouse, using a randomized block design with treatments formed from a 2 x 3 x 5 factorial scheme, relative to two concentrations of salts in the irrigation water (0.6 and 2.4 dS m-1), three types of phytohormones [Auxin = indole-3-acetic acid; Cytokinin = CPPU (N-(2-chloro-pyridyl)-N-phenylurea) and Gibberellin = gibberellic acid(AG3)], and five concentrations of the phytohormone (0, 12.5, 25.0, 37.5 and 50.0 µM L-1), with three repetitions,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auxins; Cytokinins; Gibberellins; Salinity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300170 |
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| Paiva,Emanoela P. de; Sá,Francisco V. da S.; Torres,Salvador B.; Brito,Marcos E. B.; Moreira,Romulo C. L.; Silva,Luderlândio de A.. |
| ABSTRACT The objective of this study was to evaluate the tolerance of cowpea cultivars to water stress, during seed germination and seedling establishment. For this, a completely randomized experimental design was used in a factorial scheme consisting of nine cultivars of cowpea (BRS Guariba, BRS Potengi, BRS Itaim, BRS 17 Gurguéia, BRS Aracê, Paulistinha, Maratanã, Costela-de-Vaca and Canapu-Branco) and two levels of osmotic potential induced by PEG 6000 (0.0 MPa (control) and -0.4 MPa) in four replicates of 50 seeds. The variables analysed were germination, germination first count, root and shoot lengths, and dry matter accumulation of shoots and roots. The dissimilarity between the genotypes was also determined by Euclidean distance. Germination and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Initial growth; Polyethylene glycol; Osmotic potential. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000600407 |
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| Silva,Luderlândio de A.; Brito,Marcos E. B.; Sá,Francisco V. da S.; Moreira,Rômulo C. L.; Soares Filho,Walter dos S.; Fernandes,Pedro D.. |
| RESUMO Objetivou-se estudar os mecanismos fisiológicos de percepção e tolerância ao estresse salino de híbridos de citros em cultivo hidropônico. O experimento foi realizado em ambiente protegido do Centro de Ciências e Tecnologia Agroalimentar - CCTA, da Universidade Federal de Campina Grande - UFCG, Pombal, PB. Foram avaliados, em blocos casualizados, em esquema fatorial (2x5), dois níveis de salinidade da água de irrigação (0,3 e 4,0 dS m-1) e cinco híbridos recomendados para uso como porta-enxerto [HTR - 069, HTR - 116, HTR - 127, LCR x TR - 001 e TSKC x (LCR x TR) - 040)], com três repetições. Os genótipos foram cultivados em sistema hidropônico adaptado em vasos de Leonard, utilizando solução de Hoagland. O início da aplicação da solução nutritiva... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus spp.; Poncirus; Solução de Hoagland; Trocas gasosas. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001300001 |
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| Sousa,Mônica S. da S.; Lima,Vera L. A. de; Brito,Marcos E. B.; Silva,Luderlândio de A.; Moreira,Rômulo C. L.; Oliveira,Carlos J. A.. |
| ABSTRACT The salinity of water and soil reduces the growth and production of crops, especially the fruit trees, such as papaya. Thus, it is necessary to obtain management alternatives for cultivation under these conditions. Therefore, the objective of this study was to evaluate the growth and phytomass of papaya cultivated under irrigation with saline water and organic fertilization. An experiment was set up using a randomized block design, with the treatments distributed in a 5 x 2 factorial scheme, consisting of five levels of salinity of irrigation water (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and two levels of organic fertilization (10 and 20 L of bovine manure per plant), with three replications, totaling thirty experimental plots. Growth variables of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Saline stress; Organic matter. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000200079 |
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| Sá,Francisco V. da S.; Nobre,Reginaldo G.; Silva,Luderlândio de A.; Moreira,Rômulo C. L.; Paiva,Emanoela P. de; Oliveira,Fernanda A. de. |
| ABSTRACT This study aimed to evaluate the tolerance of guava rootstocks under salt stress in the initial development stage. The experiment was conducted in a greenhouse in a randomized block design in a 5 x 3 factorial, consisting of five levels of irrigation water salinity (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and three guava rootstocks (‘Crioula’, ‘Paluma’ and ‘Ogawa’), with four replicates and four plants per replicate. Emergence, growth and phytomass accumulation were evaluated 30 days after sowing. Increased salinity restricts guava emergence, growth and phytomass accumulation, and the most drastic effects occur at levels higher than 1.8 dS m-1. The cultivar ‘Crioula’ is more tolerant to salinity in relation to ‘Paluma’ and ‘Ogawa’, and can be indicated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psidium guajava L.; Irrigation; Salinity; Propagation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201072 |
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| Sá,Francisco V. da S.; Gheyi,Hans R.; Lima,Geovani S. de; Paiva,Emanoela P. de; Moreira,Rômulo C. L.; Silva,Luderlândio de A.. |
| ABSTRACT The objective of this study was to evaluate the interaction between water salinity and doses of nitrogen and phosphorus on chlorophyll a fluorescence and on the growth of West Indian Cherry (‘acerola’) plants in the initial growth stage. The research was carried out in a protected environment, in lysimeters filled with Regolithic Neosol of loamy clay texture and low initial phosphorus content. The experiment was conducted in a randomized block design, arranged in a factorial scheme with two factors, five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.4, 2.2, 3.0 and 3.8 dS m-1) and four proportions of the recommendation of phosphorus/nitrogen - P/N (100:100, 140:100, 100:140 and 140:140% P/N of recommendation), with three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll fluorescence; Saline stress; Fertilization; Malphigia emarginata. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300158 |
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