Catálogo polínico de plantas no Chaco Brasileiro: uma análise preliminar

Abstract

The Chaco, not yet officially considered a Brazilian biome, is an area with very rich biodiversity, but which has been suffering from human actions such as deforestation and illegal burning, mainly for the preparation of agricultural and livestock areas. Through palynology it is possible to understand the dynamics of present and remote vegetation, as well as the relationship between plants and their pollinators, being a great step towards preservation. The objective of this research is to describe pollen morphology, to facilitate the identification of pollen grains from species native to the Chaco of Porto Murtinho MS. A survey was carried out, where the botanical species found in flowering time had their flowers collected to prepare palynological slides. In the laboratory, palynological slides were assembled and photographic records of the pollen were made. The morphological characteristics of eight species occurring in the Brazilian Chaco were preliminarily described, based on pollen unity, symmetry, polarity and scope. The research contributed not only to identifying the pollen morphology of species that are endemic to the Chaco, especially occurring in Brazilian territory, but also to proving the return of fire-resilient species.