Relationships between substrate and the mobilization of reserve with temperature during seed germination of Ormosia coarctata Jack.

Reis, Leonardo Pequeno; Borges, Eduardo Euclydes de Lima e; Souza, Genaína Aparecida de; Brito, Danielle Santos

doi:10.1590/2317-1545v42223509

Cited by 5 publications

(2 citation statements)

References 32 publications

(38 reference statements)

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“…These superior results for the type of substrate can be justified by the better structure, aeration, and water retention capacity, thus maintaining proper conditions for seedling germination and development. Moreover, these substrates provide an adequate contact area between the substrate and the seed, allowing greater water absorption and consequently higher germination rates (Reis et al 2020).…”

Section: Experiments Ii: Germination Of Seeds On Different Substrates...mentioning

confidence: 99%

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Baptista

Alexandre²,

Lima³

et al. 2022

Biosci. J.

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Solanum capsicoides, commonly known as red soda apple, is a little-studied species with phytotherapeutic characteristics of interest to the pharmaceutical industry. However, little is known about its agronomic characteristics. Therefore, this study aimed to assess the effect of light, different temperatures, and substrates on the germination of S. capsicoides seeds. The study consisted of two experiments: Experiment I - Germination of S. capsicoides seeds under different wavelengths. The seeds were kept on Petri dishes covered with Germitest™ paper moistened with distilled water and exposed to the monochromatic, red, far-red, and dark wavelengths. The experiment was performed in a completely randomized design with four replications of 25 seeds. Experiment II - Germination of S. capsicoides seeds on different substrates and at different temperatures. The seeds were distributed according to six substrates: paper roll, on paper, between sand, on sand, on soil + sand + manure, and between soil + sand + manure. The seeds were also subjected to the constant temperatures of 20, 25, 30, and 35 °C and the alternate temperatures of 20-30, 20-35, 25-30, and 25-35 °C, characterizing a 6 x 8 factorial arrangement. Germination rate, germination speed index, and mean germination time were evaluated. Red soda apple seeds are classified as positive photoblastic, with the highest germination rate occurring at the temperature of 20-35 °C combined with on paper, paper roll, on sand, and between sand substrates.

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Section: Experiments Ii: Germination Of Seeds On Different Substrates...mentioning

confidence: 99%

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Baptista

Alexandre²,

Lima³

et al. 2022

Biosci. J.

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“…The presence and proportion of each of these components are directly related to the production of more vigorous coffee seeds. Germination is a biochemical and physiological process that begins with water uptake by the seed and the activation of metabolism (Reis;Souza;Brito, 2020), as well as endosperm weakening which accompany further embryo development (Walters;.…”

Section: Introductionmentioning

confidence: 99%

Histochemical approach of the mobilization of reserve compounds in germinating coffee seeds

Oliveira

Souza

Silva

et al. 2020

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The endosperm of coffee beans is an important structure which is composed of different reserve compounds. In the present study, we followed anatomical features during the reserve mobilization of Coffea arabica L. cv 'Catuaí' seed samples, harvested at 20 different sites, after 0, 3, 6, 12, 24, 30 and 45 days of imbibition. Seed samples were properly stored for enzyme activity assessment and fixed in FAA solution (formaldehyde, acetic acid and ethanol, 1; 1; 18) and kept in ethanol 70% solution, for histochemical analysis. Alternatively, samples for phenolic compounds histochemical test were fixed in Ferrous sulfate in formalin. Fixed samples were cross-sectioned for detection of starch, lipids, essential oils, oleoresins, proteins, phenolic compounds, neutral polysaccharides, alkaloids, β-1,3 and β-1,4 glucans, and lignin. Overall, based on histochemical tests and enzyme activity, seed reserve mobilization was similar among the evaluated altitudes and mountainsides. During soaking, there is an intense consumption of reserve compounds, starting at the region close to the embryo. Reserve mobilization intensifies after root protrusion, from 12 days of soaking. The intensification of the reserve consumption concomitant with an increased activity of MDH is observed at the first 12 days, whereas SOD showed higher expression after 30 days of soaking. At the 30 th day, little reserve is observed in the endosperm. At 45 th day, cotyledon leaves are expanded, and the root system, constituted by the taproot and lateral roots, is well established.

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Heat stress-mediated effects on the morphophysiological, biochemical, and ultrastructural parameters of germinating Melanoxylon brauna Schott. seeds

et al. 2021

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Relationships between substrate and the mobilization of reserve with temperature during seed germination of Ormosia coarctata Jack.

Cited by 5 publications

References 32 publications

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Luminosity, temperature, and substrates on the germination of Solanum capsicoides

Histochemical approach of the mobilization of reserve compounds in germinating coffee seeds

Heat stress-mediated effects on the morphophysiological, biochemical, and ultrastructural parameters of germinating Melanoxylon brauna Schott. seeds

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