Physalis angulata L. is an annual herb of the Solanaceae family, known in Brazil as camapu. Its fruits are widely eaten due to their high nutritional content and various plant parts are also used for medicinal purposes plant. The objective of this study was to evaluate the physiological maturity of P. angulata seeds during fruit development and maturation, as well as to identify the tolerance method for seed desiccation, contributing to the conservation of this species. Fruits and seeds were harvested at 15, 22, 29, 36 and 43 days after anthesis (DAA). The fruits were characterized regarding length, diameter, weight, total soluble solids, epicarp color, total number of seeds, and fresh seed weight. For determination of the seed physiological quality at different maturation times, freshly harvested seeds were dried at room conditions for 72 h and evaluated for water content, dry weight, germination percentage, germination index and seedling emergence. The desiccation tolerance was analyzed through fast and slow methods utilizing silica gel and saline solution of CaCl₂. Significant increases were found in all physical and chemical traits of the fruits during development. Epicarp, nervure and calyx color can be used as good indicators of the degree of maturity, allowing identifying the best fruit harvest time. The seed physiological maturity of P. angulata was reached at 36 days after anthesis. The drying speed did not influence the seed germination percentage, germination index and vigor. P. angulata has orthodox seed storage behavior and can tolerate water content below 7%, which contributes to the maintenance of high viability (above 90%) for prolonged periods. Our findings can guide the conservation of P. angulata in seed banks and their use in breeding programs to obtain new hybrids.

酸浆（Angalis angulata L.）是茄科的一年生草本植物，在巴西被称为camapu。由于其营养含量高，其水果被广泛食用，各种植物部位也可用于药用植物。这项研究的目的是评估Angulata的生理成熟度果实发育和成熟过程中的种子，以及确定种子干燥的耐受方法，有助于保护该物种。在开花后的15、22、29、36和43天（DAA）收获水果和种子。对果实进行长度，直径，重量，总可溶性固形物，果皮颜色，种子总数和新鲜种子重量的表征。为了确定不同成熟时间的种子生理质量，将新鲜收获的种子在室温下干燥72小时，并评估其水分含量，干重，发芽率，发芽指数和幼苗出苗。通过硅胶和CaCl ₂盐溶液的快速和慢速方法分析了干燥耐性。在发育过程中，发现果实的所有物理和化学性状均显着增加。果皮，神经和花萼的颜色可以用作成熟度的良好指标，从而确定最佳的水果收获时间。花后36天达到了P. Angulata的种子生理成熟期。干燥速度不影响种子发芽率，发芽指数和活力。P. angulata具有正统的种子储存行为，并且可以忍受低于7％的水分，这有助于长时间保持较高的生存力（超过90％）。我们的发现可以指导种子库中Angulata的保存及其在育种计划中的使用，以获取新的杂种。