This study aimed to identify phenotypic plasticity in populations of Jatropha curcas. The experiment was conducted with a completely randomized design with eleven treatments and four replications. Morphophysiological variables were analyzed in the agricultural year, 2014-2015. Positive correlations were only observed between crown diameter and seed production, and canopy diameter and stomatal density in adaxial epidermis, indicating that canopy diameter can be used as a descriptor in plant breeding programs. Cluster analysis confirmed the existence of diversity among populations of J. curcas, with the formation of two groups, demonstrating the narrow genetic basis of Jatropha found in different regions of Brazil. The analysis of phenotypic plasticity demonstrated that morphological variables had a higher coefficient of plasticity in relation to physiological and productive variables. The morphological and physiological variables can be used in J. curcas breeding programs to study diversity and phenotypic plasticity.
Soybean is one of the most important cultures harvested in the world, and Brazil is ranked the second major producer and the top exporter of this oilseed. Brazil presents good edaphoclimatic conditions for soybean cropping, it has a strong research structure and has capacity to enhance its cropping area, and however, the faulty infrastructure in its own terrain hinders logistic operations for soybean flow and exportation. Brazil has a huge deficit in grain storing, forcing producers to flow their production right after harvesting. Brazilian transportation is centered on a road system, and it is not viable once road conditions are precarious and also there are long distances to run. Soybean should then be transported by water or railway, but these means of transportation are not enough in the country due to low exploitation of existing waterways and the short railway system. Besides, Brazilian ports are inefficient, when the soybean harvest flow is at its peak for exportation; there are long lines of trucks and ships. This series of internal barriers increase the costs of Brazilian soybean and reduces its competition in the foreign market. Thus, it is of pivotal importance that the Brazilian government performs investments in building warehouses. It is also vital to invest in the improvement of the road network, extend railways and waterways and enhance ports, so that the costs with soybean logistics drop and producers should be able to increase their profits and competitiveness in the overseas market.
Lettuce bacterial leaf spot caused by Xanthomonas campestris pv. vitians is an aggressive disease that is difficult to control. So far there are no reports of the reaction of biofortified lettuce genotypes to different isolates of the bacteria. Thus, the objective was to evaluate the aggressiveness of X. campestris pv. vitians, as well as the reaction of biofortified lettuce genotypes to bacterial spot. Two experiments were performed in two distinct seasons (winter and summer), in greenhouse at the Vegetable Experimental Station of the Federal University of Uberlândia (UFU). The experimental design in both experiments was a randomized block design, in a factor scheme of 5 × 4 (five genotypes and four strains), with four repetitions. Were evaluated the severity and the area under the disease progress curve. In general, the biofortified lettuce 'Uberlândia 10000' was more resistant to most bacterial strains in the summer cultivation, and in the winter period UFU 'Crespa 206'. The commercial cultivar Robusta was the most susceptible to the strains during both seasons. The UFU E125 strain was the most aggressive for most genotypes in both seasons.
Objetivo: Descrever a experiência da implantação de uma horta medicinal em uma Unidade de Saúde de um município baiano. Método: relato de experiência da implantação em 3 etapas: reuniões de planejamento, realização de oficinas e a implantação da horta. Resultados e Discussão: As oficinas evidenciaram práticas inseguras relacionadas ao uso de plantas medicinais concomitante com medicamentos alopáticos e substituição do fármaco pelo tratamento com as plantas. Conclusão: A implantação da horta possibilitou a discussão entre a comunidade e os profissionais da unidade sobre o uso de plantas medicinais trazendo a reflexão sobre o resgate de saberes e sentidos das plantas medicinais.
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