Quinoa (Chenopodium quinoa Willd.) in Chile represents a source of germplasm with high nutritional value. However, there is little information available related to quinoa seed quality grown under contrasting environments. In this study we evaluated the changes on seed composition of seeds of two lowland/coastal quinoa genotypes grown under arid (Vicuña) and cold-temperate (Temuco) conditions in Chile. Results showed that in the case of 'Regalona Baer' and 'Villarrica' genotypes the arid location (with irrigation) led to a significant increase (P < 0.05) in grain yield (4.2 and 5.1 t ha -1 , respectively), soluble dietary fiber (16.8 ± 0.4 and 28.9 ± 2.1 g kg -1 DM, respectively), vitamin B3 (2.44 ± 0.005 and 2.26 ± 0.04 mg 100 g -1 DM, respectively), saponins (3.22 ± 0.38 mg 100 g -1 DM, 'Regalona Baer'), phenolic compounds (19.2 ± 5.48 and 31.92 ± 1.14 mg gallic acid 100 g -1 DM, respectively) and components of proximate analysis, except protein content. The cold-temperate climate (rainfed) affected positively seed size (2.22 ± 0.17 mm 'Villarrica') and 1000 seed weight (3.08 ± 0.08 and 3.29 ± 0.08 g, respectively), as well as insoluble dietary fiber content (112.3 ± 23.8 g kg -1 DM, 'Regalona Baer'). Furthermore, vitamin C was higher in 'Regalona Baer' genotype at arid locality (31.22 ± 4.2 mg 100 g -1 DM), but much higher content was registered in 'Villarrica' genotype at cold-temperate climate (49.3 ± 5.36 mg 100 g -1 DM). The environment-induced relationship among variables and genotypes was consistent with principal component analysis (PCA). The arid region of Vicuña in Chile represents a potential area for quinoa cultivation for lowland/coastal quinoa genotypes, whose nutritional and functional features were affected positively, due to the much more stressing climatic conditions.

O artigo analisa o papel do abastecimento na dinâmica sócioeconômica da Amazônia no período colonial, através da descrição das relações sociais construídas entre índios e missionários nesse período. A análise apresenta a complementaridade entre o abastecimento e o extrativismo destacando as formas específicas que estas atividades assumiram na região. O artigo apresenta a domesticidade, a reciprocidade e a redistribuição como elementos chave na reprodução dos costumes indígenas no espaço dos aldeamentos. Por outro lado, demonstra também o papel que a demanda do mercado mundial pelas drogas do sertão impunha a esses grupos causando uma abrupta dizimação das populações indígenas que foram as responsáveis pela manutenção da vida na Amazônia Colonial.

Durante os séculos XVII e XVIII interagiram, entre o Estado do Grão Pará e a Guiana Francesa, indígenas, escravos fugitivos, colonos, comerciantes, religiosos, administradores de França e Portugal. No artigo analisam-se as disputas entre os agentes coloniais e as ações e estratégias de pessoas comuns nessa fronteira. During 17th and 18th centuries, Indians, runaway slaves, settlers, tradesmen, religious, France and Portugal managers, have interacted in the territory. This article provides an analysis of the conflicts between colonial agents, the actions and strategies of common people in that boundary.

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