The fruits of Euterpe precatoria, popularly known as açaí palm, have been commercially exploited for use in food and beverages because of their medicinal and energetic properties. However, despite the growing demand, little is known about the seeds germination, until now, its main form of propagation. In this context, we have characterized the structure of the zygotic embryo and described temporally the germination process of E. precatoria with emphasis on the morpho-anatomical and histochemical aspects. For this end, we have collected and analyzed zygotic embryo and seedlings samples before sowing and at different periods after sowing—2, 4, 6, 8, 10, 15, 20, 30, 40, 50, and 60 days. The embryo has an oblique embryonic axis and mainly protein reserves. Seed germination is classified as cryptocotyledonar, hypogeal, and adjacent ligular and we observed seedlings at 20 days after sowing (33.3%), although anatomical evidence of the beginning of the germination process have been observed at 15 days. The day-20 was histologically marked by the expansion of the ligule, beginning of second eophyll differentiation, and complete root protrusion. This stage was characterized by the total consumption of protein reserves and increased starch grains. The occurrence of 100% of root and ligula emission was verified at day-60, which characterizes a slow and heterogeneous process. The morphological marker of the E. precatoria germination is the exit of the proximal region (cotyledonary petiole) of the embryo from within the seed by the lifting of the operculum and the species has some peculiarities, such as the presence of high concentrations of phenolic compounds and idioblasts before and throughout the germination process, and starch grains located on the embryonic axis. We can verify that the consumption of protein reserves of the embryo is related to the energy supply necessary for root protrusion.

Euterpe precatoria的果实，通常被称为açaípalm，由于其药用和能量特性已被商业开发用于食品和饮料。然而，尽管需求不断增长，但对种子萌发的了解甚少，直到现在，种子的主要繁殖形式仍为人所知。在这种情况下，我们已经表征了合子胚的结构，并暂时描述了大肠杆菌的萌发过程。重点放在形态解剖学和组织化学方面。为此，我们在播种前和播种后的不同时期（第2、4、6、8、10、15、20、30、40、50和60天）收集并分析了合子胚和幼苗样品。胚胎具有倾斜的胚胎轴，主要是蛋白质储备。种子发芽分为隐叶植物，下胚叶和邻近的叶状体，尽管在解剖后15天就观察到了萌发过程的开始，但我们在播种后20天观察到了幼苗（占33.3％）。在组织学上第20天的特征是叶舌的扩张，第二次叶肉分化的开始以及根的完全伸出。此阶段的特征是蛋白质储备的总消耗量和淀粉颗粒的增加。在第60天验证了100％的根和舌齿排放，这是一个缓慢而异质的过程。的形态标记E. precatoria萌发是指通过提起盖而使种子从种子内部离开胚的近端区域（子叶叶柄），并且该物种具有一些特殊性，例如在之前和整个过程中都存在高浓度的酚类化合物和成纤维细胞萌发过程，淀粉粒位于胚轴上。我们可以验证胚胎蛋白质储备的消耗与根部伸出所必需的能量供应有关。