04. Unidade Acadêmica de Garanhuns (UAG)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2947
Os trabalhos que compõem as coleções desta comunidade pertencem à produção científica da antiga Unidade Acadêmica de Garanhuns (UAG) da UFRPE entre os anos de 2018 e 2019.
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2 resultados
Resultados da Pesquisa
Item Análise química, fracionamento dos carboidratos e digestibilidade in vitro da matéria seca do milheto, de primeiro e segundo ciclos, variedade BRS 1501, cultivado com quatro níveis de aplicação de gesso e lâmina de irrigação no Semiárido(2019-12-11) Oliveira, Thalita Barbosa de; Magalhães, André Luiz Rodrigues; http://lattes.cnpq.br/2621131411062422; http://lattes.cnpq.br/8941489921336261The objective of this study was to evaluate the chemical composition, carbohydrate fractionation and in vitro digestibility of dry matter of first and second cycle millet (Pennisetum glaucum (L.) R.), varieties BRS 1501, grown with four levels of plaster and blade application. of irrigation in the Semiarid. The study was conducted in Petrolina-PE, during a period of 140 days, lasting 75 days for the first cycle and 65 days for the second. The experimental design was in randomized blocks arranged in a 2x4 factorial scheme, considering two cuts (1st and 2nd cycles) and four doses of agricultural plaster (0, 2, 4 and 8 Mg.ha-1), with three replications. totaling 24 installments. Gypsum doses showed significant differences for carbohydrate fractions (P<0.05), not influencing bromatological composition or IVDMD (P>0.05). However, there was a difference between the cuts for the analyzed parameters of CP, NDF and ADF (P<0.05). However, differences were observed between cycles for the analyzed parameters of total (CHO), fibrous (CF), non-fibrous (CNF) and digestible (A + B1) and potentially digestible (B2) carbohydrate (P<0.05). The CHO presented higher values in the second cut (792.9 g/kg DM) compared to the first cut (740 g/kg DM), which also explains the higher levels of CNF in the second cycle. The A + B1 fraction also increased in the second cycle (P<0.05), which may be associated with a decrease in fibrous carbohydrate levels in the same cycle. The increase in gypsum doses contributed to the decrease of saline stress in the plants, which may have favored the increase of the A + B1 fraction. However, fraction B2 presented higher proportion in the first cycle, having compensated for the lower values of A + B1. The higher proportion of fraction B2 for the first production cycle is consistent with the higher CF content compared to the second cycle, since there was no difference in fraction C values between production cycles. Therefore, the IVDMD was not influenced (P>0.05) by the production cycles. All the forages produced presented chemical-bromatological constitution suitable for the feeding of ruminants, which contributes to the increase of the carrying capacity of the production systems and, consequently, to the higher animal performance.Item Efeito de estresses combinados salino e de altas temperaturas em Vigna unguiculata (L.) Walp: abordagens fisiológicas e anatômicas(2018-07-25) Almeida, Michelle Maylla Viana de; Moser, Luciana Maia; http://lattes.cnpq.br/5884448493094899; http://lattes.cnpq.br/6857300995793973Salinity and high temperatures are factors that negatively affect the production of plant species of socioeconomic importance in arid and semi-arid waters. At present, major reactions from plant technicians are covered and information on environmental conditions is included. Cowpea (Vigna unguiculata (L.) Walp) is one of the most important crops of the region. In addition, it is a moderately resistant strategy to drought and salt stress, stressing principles that limit the productivity of this crop. The present work had as physiological and anatomical objective of the rope bean on the effect of saline stresses and high temperatures. The experiments were conducted at UFRPE-UAG / CENLAG. Seeds of cowpea cultivar IPA 206 were seeded on filter paper moistened in distilled water or 100 mM NaCl solution (saline stress condition) and placed in a germination chamber with 12-hour photoperiod at temperatures of 30, 35 and 40°C for 7 days . The measures of the flexible ones were cut and their length was measured in relation to the analytical balance. For a physiological characterization, as were submitted to germination tests, IVG, analysis of root and shoot root length and dry mass, and anatomical analysis from histological sections of hypocotyls. The results were: the interaction between salinity and high temperatures decreased the seed germination potential of V. unguiculata and the sampling rate was 40°C. Saline stress (100 mM NaCl) in the hot, diseased air (40°C) inhibited the growth, growth and dry mass of V. unguiculata seedlings. Saline stress associated with high temperatures caused disarrangement in the arrangement of xylem and phloem bundles in cowpea seedlings. Thus, the combined stresses potentiate the effects of saline and thermal stress alone.