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      Anatomical and histochemical aspects of zigotic embryo and leaves in 'Coqueiro Anão' Translated title: Aspectos anatômicos e histoquímicos de embrião zigótico e folhas em 'Coqueiro Anão'

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          Abstract

          The paper provides information about histochemical staining reactions in leaves and embryos of 'Coqueiro Anão' (Cocos nucifera). It was compared in vitro coconut and autotrophic palm leaves. Reactions for insoluble polysaccharides and acidic compounds, protein, extractable lipids, lignin and other classes of compounds were tested using histochemical tests. None sample gave positive reaction for lignin and phenolic compounds. All the samples gave positive reaction for protein, starch and insoluble polysaccharides while acidic compounds were positive only in in vitro leaves. Both in vitro and autotrophic leaves gave positive reaction for lipids showing presence of cuticle even in in vitro leaves. Only autotrophic palm leaves showed idioblasts containing calcium oxalate crystals.

          Translated abstract

          Este trabalho fornece informações sobre resultados de testes histoquímicos em folhas e embriões zigóticos de 'coqueiro anão' (Cocos nucifera). Foram comparadas folhas de palmeiras de cultura in vitro e autotróficas. Reações para polissacarídeos insolúveis e compostos acídicos, proteínas, lipídios, lignina e outras classes de compostos foram testadas por meio de testes histoquímicos. Nenhuma amostra foi positiva para lignina e compostos fenólicos. Todas as amostras foram positivas para proteína, amido e polissacarídeos insolúveis, enquanto compostos acídicos foram observados apenas em folhas cultivadas in vitro. Amostras de folhas in vitro e autotróficas apresentaram reação positiva para lipídios, demonstrando a presença de cutícula mesmo em plântulas in vitro. Somente folhas de palmeiras autotróficas apresentaram ideoblastos contendo cristais de oxalato de cálcio.

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          Plant microtechnique

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            Histological demonstration of mucin after periodic acid.

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              Botanische Microtechnik

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria )
                1678-4596
                April 2010
                : 40
                : 4
                : 867-872
                Affiliations
                [1 ] Universidade Federal de Sergipe Brazil
                [2 ] Universidade Estadual de Santa Cruz Brazil
                [3 ] Universidade Estadual do Norte Fluminense Brazil
                Article
                S0103-84782010000400019
                7766d0ea-431d-415e-a3fc-7cc5b7169268

                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=0103-8478&lng=en
                Categories
                AGRONOMY

                Horticulture
                Cocos nucifera,in vitro culture,polysaccharides,protein,lipids,cultura in vitro,polissacarídeos,proteínas,lipídios

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