Abstract Detail

Reproductive Processes

Souza , Marcela Faria [1], Santos, Pedro Henrique Machado  [1], Silva, Brenda Pereira [1], De Paula, Livia Maria [1], Carreño, Javier Isnardo  [2], Paulino-Neto , Hipólito Ferreira [3].

Reproductive phenology, floral morphology and floral visitors of Attalea geraensis,a neotropical palm in a fragmente of Brazilian Cerrado .

The Arecaceae or Palmae family belong to the group of woody monocot trees, with deep roots that can reach 20 meters in height and represent great potential for appreciation in the Brazilian Savanna (Cerrado) because they present diversity of species, exist in all habitat types, besides being part of the culture and family economy of many traditional or non-traditional communities of the Cerrado, with mainly tropical and subtropical distribution. Most of the representatives of the Arecaceae family, including the species under study, Attalea geraensis, are pollinated by beetles, (cantarophily). Attalea has an underground stem and when reproductive sprouts spats emerge from male and female inflorescences. This present study aimed to register the floral and fruiting phenology, to describe the floral morphology, as well as to determine the floral visitors of A. geraensis in a fragment of cerrado. This research was conducted in a Cerrado fragment located at Guapé – Minas Gerais State, Brazil, where following the methodology, about 80 individuals were followed between November 2018 and September 2019, determining the floral phenology where the highest number of buds was observed between the period of April and May, as well as the phenology of fruiting where it was noted that there is fruit production throughout the year. The flowers are yellowish with coriaceous aspects, with morphometric variations according to sex. As A. geraensis is an acaulescent palm species, their inflorescence buds grow at ground level. The spadix being greenish in color when sprout, but throughout its development up to the opening becomes brownish. Female and male inflorescences showed rachillaes, rachis and flowers bright yellow in color. The female inflorescences measure between 25 and 40 cm in height, and the flowers are coriaceous, arranged in a spiral and present five erect stigmas per flower. In addition, the male inflorescences measure between 25 and 40 cm in height, have from 55 to 90 rachillaes, the flowers have about 6 to 10 stamens, the pollen yellow in color too. The fruits are oblong and brown in color. The fruits produced are oblong, known as coconuts, brown in color. The main floral visitors observed were two coleoptera species: Cyclocephala mecynotarsis (Scarabaeidae) and Pachymerus sp. (Bruchidae)

1 - Universidade do Estado de Minas Gerais, Unidade Passos/Curso de Ciencias Biológicas, Av. Juca Stockler, 1130, Belo Horizonte, Passos, Minas Gerais, 37900-106, Brazil
2 - Instituto Agronômico de Campinas, Centro de Recursos Geneticos Vegetais, Av.Dr.Theodureto de Almeida Camargo 1500, Campinas, Sao Paulo, 13075-630, Brazil
3 - Universidade do Estado de Minas Gerais, Unidade Passos/ Curso de Ciências Biológicas, Av. Juca Stockler, 1130, Belo Horizonte , Passos, Minas Gerais, 37900-106, Brazil

Brazilian Savanna
beetle pollination
population dynamics
reproductive success.

Presentation Type: Poster
Session: P, Reproductive Processes Posters
Location: Virtual/Virtual
Date: Thursday, July 30th, 2020
Time: 5:00 PM Time and date to be determined
Number: PRP005
Abstract ID:880
Candidate for Awards:None

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