Aspectos anatômicos do embrião e desenvolvimento inicial de Oenocarpus minor Mart: uma palmeira da Amazônia

Oliveira, Andréia Barroncas de; Mendonça, Maria Sílvia de; Araújo, Maria Gracimar Pacheco de

doi:10.1590/s0102-33062010000100003

Cited by 15 publications

(9 citation statements)

References 12 publications

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“…O formato do embrião, sua localização e as características do eixo hipocótilo-radícula da semente de P. guyannense são típicos das monocotiledôneas (Demason e Thomson, 1981;Demason, 1988;Mendonça et al, 2008;Oliveira et al, 2010).…”

Section: Resultsunclassified

Morfoanatomia e histoquímica da semente de sororoca (Phenakospermum guyannense (Rich.) Endl. - Strelitziaceae)

Oliveira

Cassino

Gurgel³

et al. 2012

Rev. bras. sementes

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6Universidade Federal do Amazonas (UFAM), 69077-000 -Manaus, AM, Brasil.*Autor para correspondência RESUMO -Phenakospermum guyannense é popularmente conhecida na Amazônia como sororoca, geralmente encontrada próxima a cursos d´água, em ambientes ombrófilos. Objetivou-se com este estudo descrever a morfoanatomia e histoquímica da semente madura de P. guyannense, como contribuição a estudos taxonômicos, fisiológicos e ecológicos. Sementes maduras foram coletadas nas margens da Cachoeira do Urubuí, no Município de Presidente Figueiredo, Amazonas. O estudo anatômico foi realizado conforme técnicas usuais para análise em microscopia óptica e eletrônica de varredura. Foram aplicados testes histoquímicos para a detecção de compostos fenólicos, amido, proteína e lipídios. A semente madura de P. guyannense é estenospérmica, com envoltório de cor negra, formado por vários estratos de diferentes tipos celulares, sendo a maioria impregnada de compostos fenólicos. O hilo é punctiforme, circundado por células que constituem o arilo. O endosperma é sólido, constituído por células tetraédricas de conteúdo amiláceo e proteico. O embrião é basal capitado, apresentando células de conteúdo lipídico e proteico, composto por eixo hipocótilo-radícula levemente dilatado de forma cilíndrica e localiza-se na região proximal. O haustório apresenta formato aplanado e situa-se na região distal.Termos para indexação: anatomia vegetal, sementes florestais, Zingiberales.Morpho-anatomy and histochemistry of the seed of sororoca (Phenakospermum Guyannense Rich.) Endl. -Strelitziaceae)ABSTRACT -Phenakospermum guyannense, popularly known in the Amazon as sororoca, is usually found along rivers and in ombrophilous environments. The objective of this study was to describe the morpho-anatomy and histochemistry of mature seeds of P. guyannense collected at the Urubuí Waterfall, Presidente Figueiredo, Amazonas state, Brazil. Seed anatomy was studied using a light and a scanning electron microscopes (SEM). Histochemical tests were performed to identify phenolic compounds, starch, protein and lipids. The mature seed of P. guyannense is stenospermic, with a black seed coat composed of several layers of different cell types, with most containing phenolic compounds. The hilum is punctiform, surrounded by cells, which form the aryl. The endosperm is solid, formed by tetrahedral cells containing starch and protein. The embryo, which is cylindrical and located in the proximal region, is basal capitate, with cells containing lipids and proteins and is composed of a slightly dilated hypocotyl-radicle axis. The haustorium is flattened and located in the distal region.

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Section: Resultsunclassified

Morfoanatomia e histoquímica da semente de sororoca (Phenakospermum guyannense (Rich.) Endl. - Strelitziaceae)

Oliveira

Cassino

Gurgel³

et al. 2012

Rev. bras. sementes

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“…It has two distinct regions: one proximal, facing the micropyle, and from which the cotyledon petiole will emerge; the other is distal and corresponds to the future haustoria that will develop as the shaft grows (Figure 2A-C). These two regions were also observed by Ferreira (2005) during the seed germination of Bactris gasipaes Kunth and by Oliveira et al (2010) The difference between these two regions of the embryo of licuri seeds is clearly visible due to the slight narrowing of its median part. The proximal portion is cylindrical, however, and the most distal portion is rounded ( Figure 2C).…”

Section: Resultsmentioning

confidence: 62%

“…The Oenocarpus minor Mart. embryo is located at the center of the basal region of the seed, measuring an average of 9 mm long and 4 mm in diameter (OLIVEIRA et al, 2010). The embryo of Syagrus oleracea (Mart.)…”

Section: Resultsmentioning

confidence: 99%

“…Brazil has the third most palm species diversity worldwide, with about 387 species and 37 genera of native palm trees, which have several uses MARCHI, 2008). They are widely exploited by local native communities living in the areas with the vegetative and reproductive parts are used, which demonstrates the nutritional, economic, and ecological importance of these species, in addition to their social value to different communities (OLIVEIRA et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Morphology of fruits, diaspores, seeds, seedlings, and saplings of Syagrus coronata (Mart.) Becc.

Santos-Moura¹,

Gonçalves²,

Melo³

et al. 2016

Biosci. J.

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Licuri (Syagrus coronata (Mart.) Becc.) is an ornamental palm tree native of Brazil with great economic potential, because it provides raw material for manufacturing a wide range of products. The objective of this study was to assess the morphology of the fruits, diaspores, seeds, seedlings, and saplings of Syagrus coronata. The study was performed at the Laboratory of Seed Analysis (LSA) of the Federal Rural University of Pernambuco/Academic Unit of Garanhuns-PE, by using licuri fruits collected from the rural area of Caetés-PE. It was evaluated fruit morphology, diaspores, seeds, seedlings and saplings. Germination, in the form of cotyledon petiole emergence, began 15 days after sowing, is hypogeal, cryptocotylar, and remote tubular. It is slow and uneven, extending up to 60 days after the first eophyll appears. The saplings have alternate, pinnate, glabrous, entire leaves with parallel venation and sheath invagination. The primary roots persistent, the secondary roots arise from the stem root node in the primary root, and lateral roots only fasciculate was evidenced when the change was 300 days, and must remain in the nursery for at least 360 days after germination before taking it to the field, due to the slow development of this species.

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“…The first structure to emerge is called the cotyledonary petiole, which penetrates the soil to give rise to the primary root and the aerial part of seedling. The cotyledon remains within the seed, acting as an organ for the absorption of nutrients, known as haustorium (Oliveira et al 2010). According to this classification, the germination of B. odorata can be considered as remote type, because during the embryo development, there was a detachment of the seedling from the seed (Fig.…”

Section: Viability Analysismentioning

confidence: 99%

Analysis of Butia odorata (Barb. Rodr.) Noblick seeds of fruits collected at three maturation stages

et al. 2018

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Butia odorata (Barb. Rodr.) Noblick is a palm species that has potential for economic and environmental applications. The aim of this study was to evaluate the seed viability of a B. odorata population using two methods, as well as the water content at three ripening stages, the average number of fruits per infructescence, and the thousand-diaspore weight. Fruits and seeds were analyzed from the beginning of ripening stage to the partial dehiscence stage. The percentage humidity of the diaspores collected from the beginning of ripening to the dehiscence of fruits ranged between 16.8% and 19.8%. However, one week after pulping, when the seeds were maintained in a dry and ventilated environment, the water content decreased to 11.06%, regardless of the fruit ripening stage. The average mass of 1000 diaspores was 1.9 kg, with variation among the mother plants. We recorded an average of 860 fruits per infructescence and around 1,570 viable seeds. Around 2% of these seeds lacked an embryo. The viability was 83%.

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Aspectos anatômicos do embrião e desenvolvimento inicial de Oenocarpus minor Mart: uma palmeira da Amazônia

Cited by 15 publications

References 12 publications

Morfoanatomia e histoquímica da semente de sororoca (Phenakospermum guyannense (Rich.) Endl. - Strelitziaceae)

Morfoanatomia e histoquímica da semente de sororoca (Phenakospermum guyannense (Rich.) Endl. - Strelitziaceae)

Morphology of fruits, diaspores, seeds, seedlings, and saplings of Syagrus coronata (Mart.) Becc.

Analysis of Butia odorata (Barb. Rodr.) Noblick seeds of fruits collected at three maturation stages

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