Morfologia e desenvolvimento da plântula de Acalypha gracilis (Spreng.) Müll. Arg., Euphorbia cotinifolia L. e Jatropha gossypiifolia L. (Euphorbiaceae)

Oliveira, Jonathas Henrique Georg de; Paoli, Adelita Aparecida Sartori

doi:10.22497/arnaldoa.232.23204

Cited by 2 publications

(9 citation statements)

References 9 publications

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“…Research on seedling development is extremely important to understand the ecology and phenological characteristics of the species (Oliveira & Paoli 2016). Unfortunately, few studies on species of the Phyllanthaceae family have been found, and only one for species discussed here, where Silva-Júnior & Pereira (2009) confirm the elliptic leaves, broquidodroma nervation and protruding ribs of R. grandis.…”

Section: Discussionmentioning

confidence: 77%

“…Some morphological descriptions of R. grandis found in scientific literature, contradicting the basic characteristics that differ the Phyllanthaceae from Euphorbiaceae, show the great variability within this family. As Oliveira & Paoli (2016) state, there is a need for new studies of the Euphorbiaceae family, studies with the Phyllanthaceae family, which address a larger number of species, establishing a greater knowledge about them and its relationships with other taxa. The need for better systematization also makes it important.…”

Section: Discussionmentioning

confidence: 99%

“…The germination test, according to Oliveira & Paoli (2016), is one of the main means used to measure physiological quality of the seeds, learning about their germinative potential. The most important aspect with regard to seed quality is that it has uniform and rapid germination .…”

Section: Discussionmentioning

confidence: 99%

“…Silva-Júnior & Pereira (2009) and Lorenzi (2009) also describe R. grandis germination with rates around 50% when sown soon after harvest. Oliveira & Paoli (2016), studying species of the family Euphorbiaceae, concluded that the viability of the three species (Acalypha gracilis (Spreng.) Mull.…”

Section: Discussionmentioning

confidence: 99%

“…Fruit and seed studies, responsible for the new generations (Oliveira 2012;Silva et al 2015), as well as seedlings, allow conservation of biodiversity, provide subsidies for knowledge of seed storage and germination, seedling production (Oliveira & Conduro 2004;Oliveira 2012;Mendonça et al 2016;Bao et al 2016), and broaden the knowledge about taxa with an ecological view (Oliveira & Paoli 2016). Furthermore, biometric characterization is also important to detect genetic variability within populations of the same species (Silva et al 2008;Gonçalves et al 2013;Ribeiro et al 2016b).…”

Section: Introductionmentioning

confidence: 99%

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Morpho-physiological classification of seeds and morphology of fruits and seedlings of Richeria grandis

et al. 2020

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The objective was to describe and characterize the fruit morphology, seeds, seedlings and germination of Richeria grandis. Mature fruits were collected from matrix trees located in gallery forests. After, morphological descriptions were performed. Biometric measurement of fruits and seeds were carried out. A total of 650 seeds were randomly separated, with 20% being used for germination and humidity testing on the same day of collection and the others stored for 5, 10, 15 and 20 days. The germination test was performed in a gerbox, conducted in a laboratory chamber of the type B.O.D (biochemical oxygen demand) with a photoperiod of 12h and a temperature of 25 ºC ± 1 ºC. Periodic observations were made to monitor the development of the seedlings until the first germinated seeds reached the full seedling stage. The fruit of R. grandis is a simple, dry, capsule type septifraga, dehiscent and schizocarpic, with average length of 16.24 mm and an average width of 8.57 mm. The seed is an ellipsoid shape, containing a sarcotesta and has an average length of 7.40 mm and an average width of 4.57 mm. R. grandis presents recalcitrant seeds, which emerge in a Phanero-epigene-foliaceous manner. The radicle breaks the integument on the second day after sowing, the collection is evidenced on the 10th day, separating the primary root from the hypocotyl. At day 16, the cotyledons expand from the forehead, positioned at a 90º angle to the hypocotyl. The protophyll and the epicotyl appear only after the 50th day, characterizing the complete seedling.

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Section: Discussionmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morpho-physiological classification of seeds and morphology of fruits and seedlings of Richeria grandis

et al. 2020

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Seed characterization and germination morpho-physiology of Simira gardneriana (Rubiaceae)

et al. 2021

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Simira gardneriana (Rubiaceae) is a newly discovered tree species endemic to the Caatinga. For this reason, studies aimed at propagation, seed and seedlings analysis are essential for morphology, identification, classification, and conservation. Our objective was to characterize the seeds, the morpho-physiology of germination and seedling establishment of S. gardneriana. Therefore, we performed physical, biometric, biochemical, and morphological characterization of the seeds, as well as an evaluation of the germination process and seedling establishment. Hydration of seeds was carried out by three methods (immersion in water, on a wire mesh, and between paper rolls) and at two temperatures (25 and 30 °C). Morphological characterization of the seedlings was performed on paper substrate at 30 °C for 28 days. Seeds of S. gardneriana are orthodox, amylo-lipid, have an endosperm and do not exhibit physical dormancy. Hydration and germination of the seeds can be achieved in a paper roll at 30 °C with root protrusion on the sixth day, and complete seedling formation on the 28th day after sowing. Seedlings of S. gardneriana are phanero-epigeal cotyledonous with photosynthetic cotyledons and have ability to regrow the root system. Characterization of S. gardneriana seeds, germination and seedlings contributes to its propagation and may help in subsequent taxonomic and phylogenetic studies in Rubiaceae.

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Morfologia e desenvolvimento da plântula de Acalypha gracilis (Spreng.) Müll. Arg., Euphorbia cotinifolia L. e Jatropha gossypiifolia L. (Euphorbiaceae)

Cited by 2 publications

References 9 publications

Morpho-physiological classification of seeds and morphology of fruits and seedlings of Richeria grandis

Morpho-physiological classification of seeds and morphology of fruits and seedlings of Richeria grandis

Seed characterization and germination morpho-physiology of Simira gardneriana (Rubiaceae)

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