03.1 - Graduação (UAST)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2926
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Resultados da Pesquisa
Item Avaliação da produção de amilase e protease por fungos filamentosos de solos no Semiárido pernambucano(2019) Freires, Ariane Susan Santos; Costa, Cynthia Maria Carneiro; http://lattes.cnpq.br/9859547718446795; http://lattes.cnpq.br/0685613862543810The fungal soil communities suffer both quantitative and diversity interference caused by biotic and abiotic factors, and in the case of semi-arid soils, they are subject to low water availability, high temperatures and high solar radiation influences directly on the soil. development of these microorganisms. Thus, the objective of this work was to isolate and evaluate the enzymatic activity (amylase and protease) of filamentous fungi of Pernambucano semiarid soils collected at different times in the Mata da Pimenteira State Park Conservation Unit, in the municipality of Serra Talhada - PE. Soil collections were performed in August 2018 and April 2019, at three random points. Isolation of the fungi was performed by serial dilution technique using the Potato Dextrose Agar (BDA) and Sabouraud Agar (SAB) culture media added with chloramphenicol (for the inhibition of bacterial growth) in Petri dishes and incubated at room temperature. environment for seven days. After this period, the fungal colonies were quantified and, based on their morphotype, some were selected for the enzymatic tests of protease and amylase activity. As a result, 43 fungal colonies were isolated and a (CFU / g) quantification of (repeat 1), (repeat 2), (repeat 3) in BDA and SAB culture media, respectively, in the dry season and and (repeat 1), and (repeat 2), (repeat 3) in the BDA and SAB media respectively in the rainy season. Regarding the enzymatic potential 18 isolates were good producers of amylase and protease with emphasis on D8 identified as Aspergillus sp. which obtained greater degradation halos for both amylase and protease, with averages of 3.5 and 3.93 cm, respectively; and I3 also identified as Aspergillus sp. had a larger degradation halo for protease with 5.6 cm, both obtained during the drought period. In the rainy season, I9 (Isolated 4) and D9 (Aspergillus sp.) Stood out, which showed degradation halos of 3.5 and 4.16 cm for amylase and protease, respectively. The isolated fungi in this work have biotechnological importance, emphasizing how necessary is the preservation of habitats for the maintenance of microbial species associated with them.Item Distúrbios fisiológicos associados à sensibilidade ao estresse hídrico em plantas de arroz(2019) Patriota, Maiany Alves; Silva, Sergio Luiz Ferreira da; http://lattes.cnpq.br/0173411400092352; http://lattes.cnpq.br/4876916391191452Rice (Oryza sativa L.) is one of the most produced cereals in the world, together with maize and wheat, and when exposed to various adverse conditions, with water deficit, have its productivity compromised. Therefore, the present work aimed to characterize mechanisms indicating damage and oxidative protection that may be present in rice varieties São Francisco, BRS Sertaneja, BRS Primavera and BRS Pepita, when subjected to water deficit conditions. The experiment under greenhouse conditions is divided into three stages. The seeds of the varieties (BRS Sertaneja, BRS Primavera, BRS Pepita and São Francisco in the first phase and BRS Sertaneja and São Francisco varieties in the second and third phase) were disinfected with 5% sodium hypochlorite and sown in four liter pots. . A few days after seedling emergence, nutrient solution applications and biometric analyzes were started. After a certain time, the analysis of gas exchange, physiological and biochemical, as well as grain yield were made. The experiment was conducted in IHD in all stages, except for the first one, arranged in 2 x 2 factorial treatments, consisting of two water treatments (control treatment and water stress). The data of the analyzed variables were submitted to the F test at 0.05 probability and the means compared by the Tukey test at the same significance level. Different behaviors were obtained under optimal conditions due to the different genotypes showing that BRS Sertaneja and São Francisco are more efficient in the use of resources than the others under optimal conditions. In response to water stress, we obtained differences between varieties and between treatments in the same variety, since each one presents degree of sensitivity and response to external stimuli, so that the BRS Sertaneja variety was more resistant to drought and as a better option for use in semiarid region.Item Desempenho agronômico de pornunça submetida a duas alturas de corte e consorciada com clones de palma forrageira(2019) Moura, Geovane Alves de; Leite, Maurício Luiz de Mello Vieira; http://lattes.cnpq.br/4204641633941814; http://lattes.cnpq.br/7520067862400742Item Desempenho agronômico de clones de palma forrageira em consórcio com pornunça(2019) Moura, Edvaldo Alves de; Leite, Maurício Luiz de Mello Vieira; http://lattes.cnpq.br/4204641633941814; http://lattes.cnpq.br/2567485677684755