Efecto de la luz sobre la germinación de semillas champa (Campomanesia lineatifolia R. &amp; P.)

Merchan, Yenny Catherin Porras; Benavides, Maria Camila Pedreros; Ardila, Wendy Lorena Reyes; Balaguera-López, Helber Enrique

doi:10.19053/01228420.v17.n2.2020.10979

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…The results of the morphological variables exhibited statistical differences based on the type of light and its intensity. In terms of red light, our findings align with those of Porras Mechán et al (2020), who observed that seeds treated with red light displayed higher germination percentage, compared to those treated with blue light, as noted in Campomanesia lineatifolia. Similarly, Paniagua-Pardo et al (2015) reported a 25 % increase in germination rates 68.5 ± 1.12 ab 66.0 ± 1.58 bc Significant differences p<0.05 (*), highly significant differences p<0.01 (**).…”

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confidence: 90%

Strawberry (Fragaria ananassa) seedlings formation under different intensities of violet, blue and red LED light

Ruiz Nieto,

Mireles Arriaga,

Hernández Ruiz

et al. 2024

Agron. Mesoam.

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Introduction. Seedlings formation under controlled conditions is essential for growing species of importance as strawberry. Since the artificial LED lighting technologic has allowed greater control of light, the variation of components such as the wavelength and intensity can be manipulated to form seedlings with different characteristics. However, it is necessary to generate original scientific information for the development of precise and efficient practices on light control. Objective. The aim of the present study was to evaluate the strawberry seedlings formation under different intensities of violet, blue and red LED light. Material and methods. The study was performed in 2020 at the Plant Genetics Laboratory of the Agronomy Department of the Universidad de Guanajuato, in the municipality of Irapuato, in the state of Guanajuato, Mexico. Seeds were recovered from San Andreas cultivar fruits and seedlings were formed under violet, blue and red LED light at high, medium, and low intensities. Color determination of cotiledon area, chroma saturation index and Hue angle were performed. Physiotechnical variables, chemical and antioxidant activity were measured. Results. The most suitable treatments were violet light of high and medium intensities; as well as blue light of high intensity, due to the germination percentage exceeded at least 60 %. Seedlings did not lengthen or thin, presented the largest cotyledons areas and the highest chlorophyll concentrations. In addition, these light treatments consumed 31.2 % less electrical energy on average. Conclusions. Besides the white light, the most suitable treatments for strawberry seedlings formation were violet light at high and medium intensities, as well as blue light at high intensity. It is suggested that the violet and blue light treatments be evaluated in other cultivars to confirm the beneficial effect on the strawberry seedlings. Red light limited germination and the highest antioxidant activity was observed in this treatment.

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Section: Discussionsupporting

confidence: 90%

Strawberry (Fragaria ananassa) seedlings formation under different intensities of violet, blue and red LED light

Ruiz Nieto,

Mireles Arriaga,

Hernández Ruiz

et al. 2024

Agron. Mesoam.

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“…According to Silva and Fonseca (2016), this genus is characterized by its citrus-flavored fruits. It is an exotic fruit native to the Amazon rainforest that has considerable potential for commercialization and is currently being introduced in different markets in Colombia (Balaguera et al, 2009;Balaguera-López and Herrera, 2012a;Porras et al, 2020). This fruit has a high concentration of organic acids, sugars and volatile compounds (Balaguera and Herrera, 2012a), which makes it highly desirable for consumption, fresh or in processed products (Álvarez-Herrera et al, 2009a).…”

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Regulating the postharvest life of Campomanesia lineatifolia R. & P. fruits through the interaction of ethylene, 1-methylcyclopropene and low temperatures

González

González-Martínez

Córdoba

et al. 2021

Rev. Colomb. Cienc. Hortic.

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The champa (Campomanesia lineatifolia) is a very perishability berry with a pleasant taste. The objective of this research was to study the regulation and prolongation of the postharvest conservation of champa fruits using 1-methylcyclopropene (1-MCP) and refrigeration. Two experiments were carried out: In experiment 1, four treatments were evaluated to understand the regulation of maturation. The treatments were: control, 1-MCP, ethylene and 1-MCP + ethylene. The fruits were stored at room temperature. In experiment 2, the combination of the application of 1-MCP and two storage temperatures (room temperature [16±2°C] as well as 2±0.4°C) were used. In the two experiments, four repetitions were used, each one with approximately 500 g of fruits harvested at stage 2 of maturity (25% yellow and 75% green). The results of experiment 1 indicated that the fruits with 1-MCP presented the longest postharvest duration (17 days), firmness, and titratable acidity. They also had the lowest respiratory rate and weight loss during the 10 days. However, the fruits treated with ethylene had the opposite behavior, indicating that the changes evaluated during ripening were associated with this hormone. In experiment 2, the fruits refrigerated at 2°C, with or without the application of 1-MCP, had the longest postharvest duration, lasting 26 days, as compared to 12 days in the control fruits (without refrigeration and with 1-MCP). The fruits that lasted longer had a low respiratory rate during storage, as well as lower values for weight loss and, color index but, greater firmness and acidity. The 1-MCP was efficient when the fruits were at room temperature.

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Bioherbicidal activity of seed extract of Campomanesia lineatifolia on the weed Sonchus oleraceus L.

2022

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Sonchus oleraceus L. is a persistent weed in horticultural crops that generates high economic losses and its management is carried out with various chemical molecules. The objective of this research was to evaluate the bioherbicidal activity effect of the extract of Campomanesia lineatifolia seeds on the germination and growth of S. oleraceus L. seedlings. The study was carried out in two phases. In the first phase, germination was evaluated with two experiments, the first consisted of the addition of the ethanolic extract of C. lineatifolia every third day, in the second experiment the extract was only added at planting. In both cases, four concentrations of the extract (0%, 3%, 6%, and 9%) were evaluated. In the second phase, the same extracts were applied to plant leaves. C. lineatifolia extract inhibited the germination of S. oleraceus, when applied only once at sowing. As there was no germination with the extracts of C. lineatifolia, no direct inhibitory effect on the growth of the seedlings could be seen on the number of leaves, length of roots, and stem. With the foliar application, an incidence of 100% with symptoms of chlorosis and necrosis was observed using any of the concentrations evaluated, but the applications did not cause the plant death. The ethanolic extract from the seeds of C. lineatifolia has bioherbicide activity on S. oleraceus.

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Efecto de la luz sobre la germinación de semillas champa (Campomanesia lineatifolia R. & P.)

Cited by 5 publications

References 29 publications

Strawberry (Fragaria ananassa) seedlings formation under different intensities of violet, blue and red LED light

Strawberry (Fragaria ananassa) seedlings formation under different intensities of violet, blue and red LED light

Regulating the postharvest life of Campomanesia lineatifolia R. & P. fruits through the interaction of ethylene, 1-methylcyclopropene and low temperatures

Bioherbicidal activity of seed extract of Campomanesia lineatifolia on the weed Sonchus oleraceus L.

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