Embryonic development of Syagrus inajai (Spruce) Becc. (Arecaceae, Arecoideae), an Amazonian palm
Poliana Roversi Genovese-Marcomini A D , Maria Sílvia de Mendonça B and Sandra Maria Carmello-Guerreiro C
+ Author Affiliations
- Author Affiliations
A Instituto Nacional de Pesquisas da Amazônia – INPA, Av. André Araújo, 2936, CEP 69.060-001, Manaus, AM, Brazil.
B Universidade Federal do Amazonas – UFAM, Faculdade de Ciências Agrárias, Departamento de Ciências Fundamentais Agrícola, Manaus, AM, Brazil.
C Universidade Estadual de Campinas – UNICAMP, Instituto de Biologia, Departamento de Biologia Vegetal, CEP 13.083-970, Cx. Postal 6.109, Campinas, SP, Brazil.
D Corresponding author. Email: polianaroversibe@yahoo.com.br
Australian Journal of Botany 61(8) 611-621 https://doi.org/10.1071/BT13162
Submitted: 14 June 2013 Accepted: 27 December 2013 Published: 21 March 2014
Abstract
Syagrus inajai (‘pupunharana’) is a native palm of Brazil, with phytogeographic prevalence in the Amazon region. A morpho-anatomical analysis was undertaken in order to gain a better knowledge on the embryonic development and germinative process of the S. inajai. Plant material was collected from the Campus of the Universidade Federal do Amazonas – UFAM, Manaus, Amazonas, Brazil, and processed using standard morphological and anatomical techniques. The development process of the embryo takes ~220 days, and is divided into four stages: proembryo, globular embryo, lateral cordiform and torpedo. The embryo is small, linear, and derived from the terminal cell of the proembryo, arising from mitotic divisions in the apical cell. The embryonic axis is straight, located in the proximal region, aligned parallel to the length of the embryo. The single cotyledon is formed by the ground meristem, procambium and protoderm. The procambium supplies the embryonic axis and the haustorium.
Additional keywords: embryology, monocotyledons.
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