Archivos computacionales - PDF - Tesis digitalesThe objective of this study was to determine the effect of mechanical and chemical scarification on the germination of Malesherbia auristipulata (Passifloraceae), in vitro, emulating the conditions of its natural habitat. The seeds were previously disinfected and treatments were established with exposure to 4ºC at different exposure times and subjecting them to different scarification conditions. The seeds were collected in a town located on the Cuesta El Águila, sector quebrada de Cardones, Arica and Parinacota region (1,800 masl). The seeds were separated in the laboratory, grouping in batches of 90 seeds. The evaluations considered germination parameters (germination speed), determining the best treatment. Mechanical scarification was the best response treatment. This species was reclassified as Critically Endangered (CR) by the Wild Species Classification Committee of the Ministry of the Environment, according to IUCN* criteria, version 3.1: a population present in a very limited sector, with an area of occupation of less than 10 km2, subject to anthropic actions due to the construction of the road, the installation of warehouses for machinery, climatic effects such as summer rains that carry branches or even whole plants, predators such as caterpillars that feed on the apices and flower buds of specimens in different phenological stages.Bibliografía: hojas 31-34Memoria (Ingeniera agrónoma) -- Universidad de Tarapacá, Arica, 2020