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      Morfologia da plântula em desenvolvimento de Astrocaryum aculeatum Meyer (Arecaceae) Translated title: Morphology of Astrocaryum aculeatum Meyer (Arecaceae) seedlings in development

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          Abstract

          Astrocaryum aculeatum (tucumã) é uma palmeira amazônica, cuja polpa dos frutos, rica em vitamina A, pode ser consumida ao natural ou na forma de sorvete, suco, licor e doce. Sua propagação é demorada, existindo pouco conhecimento sobre a germinação das sementes e o desenvolvimento das plântulas. O presente trabalho teve como objetivo descrever o processo germinativo das sementes dessa espécie, submetidas ou não ao pré-tratamento de embebição, e caracterizar cronologicamente os estádios morfológicos da plântula. A germinação das sementes é do tipo adjacente ligulada, criptocotiledonar e hipógea. O tempo para alcançar cada estádio foi menor para as sementes embebidas, indicando efeito benéfico da embebição sobre a velocidade do processo germinativo, com média de emergência do pecíolo cotiledonar de 99 dias e de completa expansão da primeira folha bífida de 253 dias.

          Translated abstract

          Astrocaryum aculeatum (tucumã) is an Amazonian palm tree, whose fruit pulp is rich in vitamin A and can be consumed fresh or in ice creams, juices, liqueurs and sweets. Its propagation is slow and little knowledge exists about the seed germination and seedling development. This study describes and characterizes the morphological stages of seedling development, during the germination of seeds, pre-treatmented or not with soaking in water. The germination of seeds is of the adjacent ligular, cryptocotylar and hypogeal type. The time to each stage was shorter for the soaked seeds, indicating a beneficial effect on the speed of the germination process, with mean time of emergence of the cotyledonal petiole being 99 days and complete expansion of the first leaf bifid by 253 days.

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          Most cited references9

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          Frutas comestíveis da Amazônia

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            The Structural Biology of Palms

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              RELATIONS OF GERMINATING SOY BEANS TO TEMPERATURE AND LENGTH OF INCUBATION TIME

              T. Edwards (1934)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                aa
                Acta Amazonica
                Acta Amaz.
                Instituto Nacional de Pesquisas da Amazônia (Manaus )
                1809-4392
                September 2005
                : 35
                : 3
                : 337-342
                Affiliations
                [1 ] Instituto Nacional de Pesquisas da Amazônia Brazil
                [2 ] Instituto Nacional de Pesquisas da Amazônia Brazil
                Article
                S0044-59672005000300005
                10.1590/S0044-59672005000300005
                672f1556-2ffe-45ad-97b3-63612ba33c4a

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0044-5967&lng=en
                Categories
                AGRONOMY
                BIOLOGY
                ZOOLOGY

                General life sciences,Animal science & Zoology,Horticulture
                seed soak,Palm,Palmeira,tucumã,embebição da semente,germinação,germination

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