Caracterização morfofisiológica de frutos, sementes e plântulas de duas espécies de fabaceae de Igapó do Rio Negro

Abstract

The Fabaceae family is considered one of the three most abundant families of angiosperms, being very present in igapó areas. In addition to diversity, there are species of economic interest and of great ecological importance with associations of microorganisms capable of fixing or interning. of the species. Characterization research is important for ecological, protection, management and conservation studies. Therefore, the objective of this work was to characterize the fruits, seeds and seedlings of Campsiandra laurifolia Benth. and Dalbergia inundata Spruce ex. Benth., characterizing the fruits, seeds and seedlings, in addition to collecting information about the species. Fruit collection was carried out at the Instituto Soka Amazônia, on the left bank of the Rio Negro, on the Lower Rio Negro, in the city of Manaus, in the East Zone. The collections were sent to the Laboratory of Seed Technology - EST, at the University of the State of Amazonas, where they were applied to the other stages of the research, which include the biometry of fruits and seeds, sowing of seeds for the evaluation and characterization of seedlings. The species C. laurifolia has fruits of the woody legume type and disc-shaped seeds, while the species D. inundata has fruits of the samaroid legume type with leathery consistency and seeds with a kidney shape. Germination occurred after 26 days of sowing with 93% of germinated seeds, the Emergence Speed Index (IVE) was 0.52 and an average time of germination of 15.13 days. D. inundata seeds did not germinate, preventing germination and seedling characterization. The seedling of C. laurifolia was morphologically characterized until the fourth leaf node was formed. Keywords: Biometrics; Wetlands; Amazon; Campsiandra laurifolia, Dalbergia inundata