01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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13 resultados
Resultados da Pesquisa
Item Germinação de sementes de Moringa oleifera Lam. sob diferentes concentrações de cloreto de potássio(2024-03-08) Souza, Danilo Nunes Lemos Santos de; Lima, Elifábia Neves de; http://lattes.cnpq.br/6117763430610324; http://lattes.cnpq.br/3607823032961358This study investigates the impact of salt stress on the germination and initial growth of Moringa oleifera LAM., a plant recognized for its nutritional and medicinal properties. The introduction contextualizes the importance of Moringa oleifera and highlights the relevance of studying the effects of saline stress in agricultural environments affected by soil salinization. The experiment evaluated the response of seedlings subjected to saline stress, comparing seeds presoaked in water for 24 hours with those not soaked. Carried out under controlled laboratory conditions, the experiment lasted 15 days, with seeds subjected to different saline solution treatments with Kcl. The concentrations used were Kcl 0.04 M, Kcl 0.08 M and Kcl 0.12 M. The variables analyzed included germination percentage, germination speed index, hypocotyl and main root length. The results indicated that saline stress negatively impacts germination and growth, with a significant reduction in treatments with higher saline concentrations. This study reinforces the importance of understanding the resistance mechanisms of Moringa oleifera to saline stress for the development of sustainable agricultural practices in areas affected by salinity. Contributes to scientific knowledge about plant tolerance to adverse conditions, guiding future research to improve crop resilience in saline environments.Item Índice de salinidade do solo por sensoriamento remoto em bacia hidrográfica no submédio São Francisco(2023) Dias, Maria Caroline da Silva; Lopes, Pabrício Marcos Oliveira; http://lattes.cnpq.br/0703321303981408; http://lattes.cnpq.br/0183881695413526Item O cloreto de potássio afeta a germinação de sementes e o crescimento inicial de plântulas de Mimosa caesalpiniifolia Benth(2023-04-20) Lima, Raiane Larissa Silva de; Gallo, Ricardo; http://lattes.cnpq.br/5160912065817980; http://lattes.cnpq.br/7403117695827576Mimosa caesalpiniifolia Benth., popularly known as sabiá, is a tree species native to the Caatinga and belonging to the Fabaceae family. It has great economic and environmental potential, being used in the production of firewood, charcoal, and forage, as well as being recommended for the recovery of degraded areas. In soils of arid and semi-arid regions, as is the case with the species M. caesalpiniifolia, seed germination can be negatively affected by unsuitable conditions, such as saline soils. Thus, the objective of this study was to evaluate the germination and vigor of Mimosa caesalpiniifolia Benth. seeds subjected to salt stress by potassium chloride (KCl). The experiment was conducted in a completely randomized design with four replications of 32 seeds per treatment. Different osmotic potentials were tested, namely: 0.0 (control); -0.2, -0.4, -0.6, -0.8, -1.0 MPa. The variables evaluated were: germination percentage, germination speed index, shoot and root length, and shoot and root dry weight of seedlings. The species was found to be sensitive to salt stress, reducing germination and vigor significantly with increasing concentrations of KCl.Item Efeito do estresse salino na germinação de sementes da Moringa oleifera Lam(2023-05-12) Alves, Beatriz Silva; Lima, Elifábia Neves de; http://lattes.cnpq.br/6117763430610324; http://lattes.cnpq.br/4640617602930699La Moringa oleifera Lam. es un árbol originario de la India y se cultiva en vários países por su multifuncionalidad. Actualmente, se encuentra ampliamente en el Nordeste brasileño y su crecimiento en esta región está siendo utilizado como purificador de agua en áreas rurales. Dada su gran importancia para los agricultores familiares por sus múltiples aplicaciones de uso, como fuente de alimento, producción de jabón y biodiesel, como sustituto proteico y en su aplicación farmacológica. Este trabajo tuvo como objetivo evaluar el efecto del estrés salino em la germinación de semillas de moringa expuestas a diferentes sales y niveles de salinidad, con el fin de obtener una productividad óptima para los agricultores, ya que la región semiárida se caracteriza por altas concentraciones de sales en el suelo, debido a la escasez de lluvias y la alta tasa de evaporación. El experimento fue realizado en el Laboratorio de Ecología Vegetal de los Ecosistemas del Nordeste (LEVEN) - UFRPE, ubicado en la ciudad de Recife. El diseño experimental fue completamente al azar, con siete tratamientos y cuatro repeticiones, 100 semillas por cada tratamiento. Las sales utilizadas fueron NaCl y KCl con los siguientes niveles: 0,04 M, 0,08 M y 0,12 M. Las variables analizadas fueron el porcentaje de germinación (G%), índice de velocidad de germinación (IVG), longitud del hipocótilo y raíz y la masa seca de las plántulas. Se concluyó que la salinidad no afectó significativamente el porcentaje de germinación de Moringa oleifera Lam. para lãs concentraciones de NaCl y KCl, sin embargo, hubo una reducción en el índice de velocidad de germinación con el aumento de los niveles salinos en las condiciones establecidas en este trabajo. Se observó una reducción en la longitud del hipocótilo y raíz con el aumento de la concentración de sales, siendo la longitud de las plântulas y el número de plántulas normales las más afectadas por el NaCl. La influencia Del KCl aún no ha sido concluyente con este trabajo, siendo necesario seguir trabajando.Item Uso de águas de qualidade inferior na produção de cana-de-açúcar no Estado de Pernambuco(2018-07) Cutrim, Weliston de Oliveira; Silva, Ênio Farias de França e; http://lattes.cnpq.br/1144266495720148; http://lattes.cnpq.br/1872062048074302Item Potencial hídrico e osmótico da cultura do amendoim sob manejo da irrigação por pulsos com diferentes níveis de salinidade da água(2020) Gouveia, Rafaela Julia de Lira; Silva, Manassés Mesquita da; http://lattes.cnpq.br/2249840331584869; http://lattes.cnpq.br/0829353667600951Item Avaliação morfológica da cana-de-açúcar (cana-soca) sob condições de estresse salino(2019) Silva, Lívia Maria Cavalcante; Silva, Ênio Farias de França e; http://lattes.cnpq.br/1144266495720148; http://lattes.cnpq.br/6329117330891636Item Teores foliares de macronutrientes na cultura do amendoim sob irrigação por pulsos com águas salobras(2019) Silva, Anna Cecília Ribeiro Alves da; Silva, Gerônimo Ferreira da; http://lattes.cnpq.br/4596017290307351; http://lattes.cnpq.br/5703744281984653Item Hidroponia de baixo custo e fontes alternativas de água na produção de hortaliças(2018) Bartusch, Victor Pedrosa; Santos Júnior, José Amilton; http://lattes.cnpq.br/2839547928353699; http://lattes.cnpq.br/3865227333865612Salinization problems in semi-arid regions make hydroponics a viable crop alternative for agricultural production. In this sense, the objective of this study is to evaluate the water relations of the parsley under different concentrations of salts. Two experiments were carried out in greenhouse, in the Experiment 1, in the factorial scheme (6 x 4) with six salinity levels of the nutrient solution (1.7; 2.7; 3.7; 4,7; 5.7 and 6.7 dS m-1), prepared on the basis of four cationic natures (NaCl, CaCl2, KCl and MgCl2). No experiment I the water of the evapotranspirated blade was replaced with water supply and without experiment II a replacement was made with brackish water based on the cationic natures mentioned above according to treatments. It was verified that with the increase of the electrical conductivity of the nutrient solution, the cationic natures of the water influence the efficiency of water use in the production of fresh and dry mass of the aerial part.Item Variabilidade espacial da salinidade do solo e da produtividade de cana-de-açúcar na zona da mata norte de Pernambuco (PE)(2018) Primo, Marcelo Henrique de Oliveira; Dantas, Daniel da Costa; http://lattes.cnpq.br/1991400428252423; http://lattes.cnpq.br/7820021579930173