RESUMO:O objetivo do presente trabalho foi avaliar o teor, o rendimento e a composição química do óleo essencial de manjericão (Ocimum basilicum L.) submetido ao estresse salino por NaCl. Para tanto, o experimento foi conduzido em casa de vegetação, sob delineamento inteiramente casualizado, caracterizado por 5 (cinco) tratamentos de NaCl, adicionados à água de irrigação (0,01 -controle,T1; 1,2 -T2; 2,3 -T3; 3,4 -T4 e 4,5 dS m -1 -T5, correspondendo respectivamente a 0,1; 12,0; 23,0; 34,0 e 45,0 mM ), com 4 (quatro) repetições. Aos 55 dias após o transplantio, as plantas foram colhidas, colocadas em sacos de papel e levadas a estufa de secagem com fluxo de ar forçado a 45 °C, por 10 dias até atingirem massas constantes. Após a secagem, foi realizada a pesagem da biomassa seca da parte aérea, misturada, moída em triturador elétrico de facas e posteriormente realizada a extração do óleo essencial para análise do teor, rendimento e composição química. O aumento do estresse por NaCl não alterou o teor e a composição química do óleo essencial, cujo rendimento reduziu 12,93% a cada acréscimo unitário dos níveis de salinidade. O cinamato de metila, cujo teor médio encontrado foi de 55%, e o metil chavicol, com 12%, foram os principais compostos identificados nas plantas de manjericão.Palavras-chave: salinidade, Ocimum basilicum L., metabolismo secundário ABSTRACT: Content, yield and chemical composition of essential oil of sweet basil plants subjected to NaCl saline stress. This study aimed to evaluate the content, yield and chemical composition of the essential oil of sweet basil (Ocimum basilicum L.) plants subjected to NaCl saline stress. The experiment was carried out in a greenhouse, in a completely randomized design, with 5 (five) NaCl treatments added to the irrigation water (0.01 -control, T1; 1.2 -T2; 2.3 -T3; 3.4 -T4 and 4.5 dS m -1 -T5, corresponding respectively to 0.1; 12.0; 23.0; 34.0 and 45.0 mM) and 4 (four) replicates. At 55 days after transplanting, plants were harvested, put in paper bags and taken to a forced-air oven at 45 ºC for 10 days, until reaching constant mass. After drying, the dry biomass of the aerial part was weighed, mixed, grinded in an electric blade grinder and later taken to an essential oil extraction so that its content, yield and chemical composition could be analyzed. The increase of NaCl stress did not change neither the content nor the chemical composition of the essential oil, whose yield was reduced by 12.93% for each unit increase in the salinity level. The methyl cinnamate, with an average content of 55%, and the methyl chavicol, with 12%, were the main compounds identified in the sweet basil plants.

This work evaluated the development of colored cotton submitted to irrigation water of different salinity levels and organic matter doses from tanned manure. The experimental design was completely randomized in a 4 x 4 factorial scheme with 3 replications, totaling 48 experimental plots. The factors studied were 4 doses of organic matter (1, 4, 7 and 10%) and four levels of irrigation water salinity (0.26; 1, 2 and 4 dS m-1). The variables analyzed were plant height, stem diameter, number of leaves, number of fruits and fresh shoot mass. Significant effect of organic matter was observed on all studied variables, with a positive response on the increase of all variables as a function of increasing doses of organic matter. The isolated effect of salinity was significant for all parameters evaluated, except for the number of leaves, with significant reductions of 6.03; 3.27; 5.23; 6.94% in the parameters: plant height, stem diameter, number of fruits and shoot fresh weight respectively, for each unit increase of irrigation water salinity. The interaction between the variation sources studied had a significant effect only for fresh shoot mass, where the highest average for this parameter was observed at 10% organic matter dosage at irrigation water salinity level of 1.0 dS m-1.

Cassava, Manihot esculenta crantz, constitutes one of the main foods consumed by most of the population of developing countries, mainly in the population of low income. It is largely used for its low cost and the diversity of its root and leaves products. In this paper, a slurry sampling flame atomic absorption spectrometric method for the determination of manganese in cassava leaves is proposed. The slurry sampling was used in order to shorten 2206 Downloaded by [National Sun Yat-Sen University] at 07:03 26 December 2014 the analysis time and to minimize the problems associated with solid sample treatment such as wet acid digestion, dry-ashing, sample contamination, and analyte loss. The samples of cassava leaves were washed with extran 10% (v=v), soon afterwards they were dried in an oven to 60 C, triturated in a mill of spheres, and the obtained material was sifted in a mesh of 100 micrometers. Then 0.1 g of the sample was weighed in a balloons volumetric flask, the volume was completed with 25 mL of acid nitric 2,0 mol L À1 , and followed by 20 minutes in an ultrasonic bath and subsequent reading in FAAS. The analyses of the certified reference material of spinach and apple leaves evidenced the accuracy of the method.The proposed method was applied for the determination of manganese in four samples of cassava leaves acquired in markets from Feira de Santana City, Brazil. The concentration of manganese found in cassava leaves varied from 202.7 to 181.3 mg g À1 , with detection and quantification limits of 0.17 and 0.56 mg g À1 , respectively. The precision expressed as relative standard deviation (RSD) was 1.7 and 3.2% (n ¼ 10) for 100 and 12 mg g À1 , respectively.

O cultivo de plantas medicinais assume importância mundial devido à demanda exercida pelas indústrias químicas, farmacêuticas, alimentares e de cosméticos. Entre as plantas medicinais, a Hortelã (Mentha piperita L.), apresenta óleo essencial de grande interesse econômico. A aplicação de adubos orgânicos em seu cultivo melhora as condições físicas, químicas e biológicas do solo, além de fornecer nutrientes que contribuem em diversos processos metabólicos no vegetal. Este trabalho teve como objetivo avaliar diferentes substratos orgânicos na produção de biomassa de hortelã. O experimento foi realizado em casa de vegetação do campus experimental da Universidade Federal do Recôncavo/UFB em Cruz das Almas/Ba. Foram 4 tratamentos:  T1-  controle (solo puro), T2 -  húmus de minhoca + solo + areia, T3 – composto orgânico + solo + areia, T4 – esterco bovino + solo+ areia, com dez repetições, totalizando 50 unidades experimentais. As variáveis foram altura da planta, diâmetro do caule, teor de clorofila a e b, massa fresca e seca da parte aérea, massa fresca e seca da raiz. O tratamento com esterco bovino apresentou as melhores média na produção de massa seca de 130, 28 g e fresca   de 22, 59 g da parte aérea e raiz.de 176,13 e 25,18 g respectivamente. A maior média em relação a altura da planta foi com o tratamento de composto orgânico (46,5 cm).   The cultivation of medicinal plants is of importance due to global demand exerted by the chemical, pharmaceutical, food and cosmetics. Among the medicinal plants, the Mint (Mentha piperita L.) L. essential oil has great economic interest. The application of organic fertilizers in cultivation improves the physical, chemical and biological soil properties, in addition to providing nutrients that contribute in various metabolic processes in the plant. This study aimed to evaluate different organic substrates in the production of biomass mint. The experiment was conducted in a greenhouse on campus Universidad Federal Reconcavo / UFB in Cruz das Almas / Ba. 4 treatments were: T1-control (pure soil), T2 - earthworm humus soil + sand +, T3 - compost + soil + sand, T4 - cattle manure + soil + sand, with ten repetitions, totaling 50 experimental units. The variables were plant height, stem diameter, chlorophyll b, fresh and dry weight of shoot, fresh and dry root. Treatment with manure showed the best average in the dry mass of 130, 28 g and 22 fresh, 59 g of shoots and raiz.de 176.13 and 25.18 g respectively. The highest average over the height of the plant was to treat organic compound (46.5 cm).

Different techniques have been used to evaluate the energetic characteristics and damage to the photosynthetic apparatus of plants exposed to different stresses, including the measurement of chlorophyll fluorescence. The objective of this study is to evaluate the photosynthetic response by assessing the fluorescence parameters of chlorophyll a in basil (Ocimum basilicum L.) cv. Alfavaca Basilicão cultivated in a hydroponic deep-flow technique system using treated domestic wastewater. The study used a completely randomized block design with a 2 × 2 factorial scheme, in which the factors were the water source used for preparing the nutrient solution (tap water or treated domestic wastewater) and the height (upper and lower) of the platform of the cultivation system. The photosynthetic yield of the plants grown on the lower platform was comparatively lower regardless of the water source. However, there was no significant effect of the water source on the potential and effective quantum yields of photosystem II, indicating the absence of changes in the photosynthetic apparatus and photosynthetic yield of plants produced with treated domestic wastewater, suggesting the viability of this treatment for producing basil cv. Alfavaca Basilicão in hydroponic systems.