RESUMO:A análise do potencial fisiológico de sementes é essencial para o conhecimento do desempenho do lote de sementes na fase de propagação. Considerado como um material de grande potencial de impacto ambiental, o lodo de esgoto vem se destacando como insumo agrícola, podendo conter diversos teores de nutrientes. Objetivou-se com este trabalho analisar o crescimento inicial de plântulas de cultivares de tomate (Solanum lycopersicum L.) em substrato composto por biossólidos. Foram utilizadas sementes de tomate (Solanum lycopersicum L.) das cultivares 'Cereja Carolina' e 'Cereja Samambaia' sobre seis substratos compostos com areia e lodo de esgoto, sendo: areia pura (testemunha); areia + lodo (20 t ha -1 ); areia + lodo (80 t ha -1 ); areia + lodo (160 t ha -1 ); areia + lodo (320 t ha -1 ); e areia + lodo (520 t ha -1 ). Cada parcela experimental foi composta por quatro repetições de 25 sementes. Foram analisados: emergência (%), índice de velocidade de emergência (IVE), comprimento de parte aérea (mm) e da raiz (mm), massas fresca e seca das plântulas (mg plântula). Verificou-se que a cultivar 'Cereja Samambaia' apresentou médias superiores à cultivar 'Cereja Carolina' para as variáveis massas fresca e seca das plântulas. A maior produção das massas fresca e seca ocorre com uso do lodo de esgoto na concentração entre 362 t ha -1 e 485 t ha -1 . Palavras-chave: Solanum lycopersicum L. Massa orgânica. Resíduo. Crescimento inicial. SUMMMARY:The analysis of physiological potential of seeds is essential to the knowledge of the seed lot performance in the propagation phase. Considered with a great potential environmental impact material, the sewage sludge has emerged as agricultural input, and may contain different amounts of nutrients. The objective of this work to analyze the initial growth of seedlings of tomato cultivars (Solanum Lycopersicum L.) in substrate composed of biosolids. Tomato seeds were used (Solanum lycopersicum L.) cultivars 'Cherry Carolina "and" Cherry Fern' over six substrates compounds with sand and sewage sludge, as follows: pure sand (control); sand + sludge (20 t ha -1 ); sand + sludge (80 t ha -1 ); sand + sludge (160 t ha -1 ); sand + sludge (320 t ha -1 ); and sand + sludge (520 t ha -1 ). Each plot consisted of four replications of 25 seeds. They were analyzed: emergency (%), emergency velocity index (EVI), shoot length (mm) and root (mm), fresh and dry weight of seedlings (mg seedlings). It was found that the cultivar 'Cherry Fern' showed average higher than the cultivar 'Cherry Carolina' for the variable fresh and dry weight of seedlings. The highest yield of fresh and dry weight occurs with use of sewage sludge in concentrations between 362 t ha -1 and 485 t ha -1 .

No Brasil, o abacaxizeiro é uma frutífera de ampla distribuição no território nacional ocupando a sexta posição como a fruta mais produzida no país. Objetivou-se, com este estudo, propor a determinação do Zoneamento Agroclimático do Ananas comosus L. mediante a utilização de interpolação espacial para o estado do Espírito Santo. As etapas metodológicas necessárias para avaliar o zoneamento foram: geração do banco de dados e interpolação espacial. Os resultados mostraram que o Espírito Santo possui 73,77% de suas áreas aptas ao cultivo, 21,76% restritas e 4,48% de suas áreas inaptas ao cultivo do abacaxizeiro.

Coffee seeds are sensitive to desiccation and are used or stored with different moisture content values, which may affect the results of quality assessment. The aim of this study was to evaluate the changes in protein profile in electrophoresis gel in coffee seeds with different moisture content values under freeze-drying and without freeze-drying. Two lots of arabica coffee seeds were used, one of newly-harvested seeds and another of stored seeds. The seeds were dried to the moisture content values of 12, 15, 20, 25, 30, 35, and 40%. The physiological quality of the seeds was assessed through the germination test, electrical conductivity, and the profiles of the enzymes SOD, CAT, PO, GOT, MDH, and EST and of heat-resistant proteins. In general, there is an effect on expression of these enzymes in accordance with the presence of free water in the seeds. Moist seeds have little to no enzyme expression. The freeze-drying process allows preservation of coffee seed quality and does not change the functionality of the enzymes studied. The isoenzyme profiles of the antioxidant process in arabica coffee seeds are affected by the initial moisture content of the seeds. The freeze-drying process of the seeds ensures greater sensitivity in detection of the expression of these isoenzymes.

Tamarillo (Solanum betaceum Cav. Syn Cyphomandra betacea Cav.) Sendt is a small tree native to the subtropical Andean region of South America from Colombia to Chile, popularly known as arboreal tomato, belonging to the family Solanaceae. The objective of this study was to evaluate the physicochemical characteristics of fruits and the germination of tamarillo (Solanum betaceum) seeds produced in the Caparaó-ES and MG regions. The following procedures were performed: Fruit and peel biometrics; fruit weight; pulp and peel weight; thousand-seed weight, pulp and peel yield and fruit dry mass. In the physicochemical analysis, the following parameters were determined: pH; soluble solids; titratable acidity and ratio. For the analysis of the physiological quality of the seeds, different temperatures (20˚C; 25˚C; 30˚C and 20˚C -30˚C) were evaluated in the presence and absence of light and the following was determined: Seed moisture content; germination; germination speed index; germination mean time; shoot length; root and total seedling dry mass.Tamarillo in the region of Caparaó-ES presents greater chemical characteristics of the fruits, germination and vigor, and in the region of Caparaó-MG presents greater physical characteristics of the fruits. Tamarillo can germinate both in the presence and absence of light, although in the presence of light, it presents greater vigor.

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