http://repositorio.ufc.br/handle/riufc/348 Sat, 04 Apr 2026 15:39:14 GMT 2026-04-04T15:39:14Z http://repositorio.ufc.br/handle/riufc/71737 Título: Expressão de caracteres fisiológicos induzida por estresse salino em três progênies de cajueiro Autor(es): Menêses Júnior, Jose Abstract: The main aim of this study was to test the hypothesis that cashew seedlings from diverse environmental conditions show different biochemical and physiological characters in response to salt stress. Different cashew plant genotypes regionally known as "comum" (Anacardium occidentale L.) from coastal dunes subjected to salinization, "anão-precoce CP76" (Anacardium occidentale L var. nanum) and "microcarpo" (Anacardium microcarpum Ducke) — a native cashew plant species were evaluated in relation to their response to NaCI salinity during the initial growth. Plants were grown either in sand culture or on vermiculite, under different NaCI levels (0, 50, 100, 150 e 200 mM) and at different time exposure. Plants were cultured under greenhouse condition at a 12 h photoperiod, reaching the maximal photosinthetic active radiation of 1,000 µmol..m2.s1. Average temperatures were 27 °C at night and 24 °C by day, while average air humidity ranged between 40% and 80%. The results show that microcarpo cashew plants was the most sensitive of the three genotypes studied, concerning dry mass decrease and leaf visual toxicity sympthoms. Microcarpo sensitiviness to NaCI was directedly related to leaf C1 and Na+ content, to a higher Clleaf/root relation, and also to a lower leaf proline accumulation. In spite of the fact that "comum" and "anão" cashew stock plants show great phenotypical differences, the derived seedlings did not exhibit much contrast as to salt tolerance, although "anão" presented more root and shoot biomass on both control and salt treatment. Although the physiological characters studied (inorganic ion accumulation and partitioning, organic ion accumulation, enzyme activities of inorganic N assimilation, porometric measurements — stomatal behaviour and leaf transpiration rate) exhibit outstanding alterations in response to salt stress, they could not explain the the distinct NaCI sensibility presented by the three genotypes. Anyways, salt stress affected more decissively root endogenous K+ level, leaf expasion, nitrate reductase activity, stomatal conductance and Ca+2 and Mg+2 in leaf. On the other way, gluthamine sinthetase and soluble sugar content were less affected by salinity. Consequentely, only Na+ and Cl- accumulation as well as proline level colud partially explain NaCI sensibility. In general, cashew seedling responses to NaCI are extremely complex and suggest that the characters that may confer tolerance do not act isolatedely but are rather interactive. Descrição: Este documento está disponível online com base na Portaria nº 348, de 08 de dezembro de 2022, disponível em: https://biblioteca.ufc.br/wp-content/uploads/2022/12/portaria348-2022.pdf, que autoriza a digitalização e a disponibilização no Repositório Institucional (RI) da coleção retrospectiva de TCC, dissertações e teses da UFC, sem o termo de anuência prévia dos autores. Em caso de trabalhos com pedidos de patente e/ou de embargo, cabe, exclusivamente, ao autor(a) solicitar a restrição de acesso ou retirada de seu trabalho do RI, mediante apresentação de documento comprobatório à Direção do Sistema de Bibliotecas. Tipo: Tese Tue, 01 Jan 2002 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/71737 2002-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/71697 Título: Domesticação da saúva: avaliação da atividade alomonal de óleos essenciais sobre o comportamento da saúva do nordeste Atta opaciceps Borgmeier, 1939 Autor(es): Moreira, Rogério Araújo Abstract: This investigation was conducted in the NUCLEF — Phytosanitary Experimental's Nucleus of the Center of Agrarians Science of the Federal University of Ceará, Campus of Pici, at Fortaleza, Ceará, Brazil during the year of 2002. There were utilized 12 artificiais colonies, all in adult stage, of northeastern leaf cutting-ant, Atta opaciceps Borgmeier, 1939 (Hymenoptera:Formicidade). Five essentials oils were assayed such as: wood-candle oil (Vanillosmopsis pohlii), black-vulture's marigold oil (Porophyllum ruderale, Cass.), tipi oil (Petiveria alliaceae, L.), marigold oil (Tagetes minuta, L.) and pepper-alecrim oil (Lippia sidoides, Cham.) on 5 mg/50 ml in the solvent. The solvent used was acetone Analitical Grade. The mixture (oil + solvent) was placed, separately, in each filter paper with the aid of a graduate pipette in the dosages of 0 µg, 0,5 µg, 1,0 µg, 1,5 µg e 2,0 p.g for each treatment with three replications. The evaluation of the behavior of the researched insects was obtained through observation of five types of answers that integrated the cast of observations: access to the provision area (AAP), access to the filter paper (APF), territory demarcation in the provision area (MTAP), territory demarcation in the filter paper (MTPF) and exploration of the provision area (ELT). The used experimental outline was randomized blocks in an factorial 5x5x3 for the variable access to the filter paper (APF) and territory demarcation in the filter paper (MTPF) and 5x4x3 for the others. The average were tested to the confident level of lVo being used the Tukey's test and the association degree among the variables was measured through Pearson's correlation. For the parameters access to the provision area (AAP) and territory demarcation in the provision area (MTAP) the dose 1,5 pg showed the most efectiveness for the black-vulture's marigold oil (Porophyllum ruderale, Cass.), tipi oil (Petiveria alliaceae, L.), marigold oil (Tagetes minuta, L.) and pepperalecrim oil (Lippia sidoides, Cham.) although for the wood-candle oil (Vanillosmopsis pohlii) the dose of 2,0 µg showed the best result. For the variable access to the filter paper (APF) the dose of 1,5 µg showed alomonal effect during all assay for the blackvulture's marigold oil (Porophyllum ruderale, Cass.). For the variable territory demarcation in the filter paper (MTPF) the dose of 1,0 jig of wood-candle oil (Vanillosmopsis pohlii) presented alomonal effect. For the variable exploration of the provision area (ELT) the dose of 1,5 µg showed alomonal effect for the black-vulture's marigold oil (Porophyllum ruderale, Cass.) during all assay. Descrição: Este documento está disponível online com base na Portaria nº 348, de 08 de dezembro de 2022, disponível em: https://biblioteca.ufc.br/wp-content/uploads/2022/12/portaria348-2022.pdf, que autoriza a digitalização e a disponibilização no Repositório Institucional (RI) da coleção retrospectiva de TCC, dissertações e teses da UFC, sem o termo de anuência prévia dos autores. Em caso de trabalhos com pedidos de patente e/ou de embargo, cabe, exclusivamente, ao autor(a) solicitar a restrição de acesso ou retirada de seu trabalho do RI, mediante apresentação de documento comprobatório à Direção do Sistema de Bibliotecas. Tipo: Tese Tue, 01 Jan 2002 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/71697 2002-01-01T00:00:00Z