Morfologia de sementes, plântulas e tirodendros em espécies de Fabaceae ocorrentes no bioma Caatinga

Jessica Rodrigues Leitão; Maria do Carmo Learth Cunha; Thiago Costa Ferreira

doi:10.4336/2024.pfb.44e202102219

Authors

Jessica Rodrigues Leitão Secretaria de Estado do Desenvolvimento Ambiental de Rondônia https://orcid.org/0000-0002-4092-5433
Maria do Carmo Learth Cunha Universidade Federal de Campina Grande, Departamento de Engenharia Florestal https://orcid.org/0000-0002-4717-3967
Thiago Costa Ferreira Universidade Estadual da Paraíba https://orcid.org/0000-0002-2368-6223

DOI:

https://doi.org/10.4336/2024.pfb.44e202102219

Keywords:

Piptadenia, Mimosa, Semiarid

Abstract

Studies on the morphology of Fabaceae species from Caatinga biome are scarce, but they are important to correctly identify the species. This work aimed to describe the morphological differences of seeds, plants and tirodendro of Fabaceae species present in the Caatinga Biome. The external and internal morphology, biometry, weight of a thousand seeds and three stages of development were analyzed: germination, seedlings and tirodendro. The studied species were Piptadenia retusa, Mimosa tenuiflora and Mimosa ophthalmocentra. The pleurogram position in the seed differs between species. The three species present eurispermic, albuminous seeds such as epigeal/phanerocotyledon germination with foliate cotyledons. The seedlings are acululate, with the presence of extrafloral nectary only in P. retusa, and glandular trichomes and leaflets with translucent glands only in M. tenuiflora. Alternating spiral phyllotaxis were observed in P. retusa and M. tenuiflora and alternating distic in M. ophthalmocentra.

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Author Biographies

Jessica Rodrigues Leitão, Secretaria de Estado do Desenvolvimento Ambiental de Rondônia

http://lattes.cnpq.br/5229837510523259

Maria do Carmo Learth Cunha, Universidade Federal de Campina Grande, Departamento de Engenharia Florestal

http://lattes.cnpq.br/8486182792346558

Thiago Costa Ferreira, Universidade Estadual da Paraíba

http://lattes.cnpq.br/9961813084443213

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