J. For. Sci., 2022, 68(8):311-317 | DOI: 10.17221/43/2022-JFS

Effect of LED lights on the in vitro growth of Pinus pseudostrobus Lindl., plantsOriginal Paper

Luis Alberto Marín-Martínez, Lourdes Georgina Iglesias-Andreu*
Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana, Xalapa, Veracruz, Mexico

Pinus pseudostrobus Lindl. is a species endemic to Mexico and is widely used in reforestation programmes, as it is highly adapted to poor, shallow, limestone soils and has high commercial importance. However, it is necessary to preserve this genetic material since it is in trouble due to high rates of deforestation, land use change, and forest fires, so it is necessary to have effective strategies to obtain good quality seedlings. Due to the properties of LED (light emitting diode) lamps used for illumination in the production of in vitro plants, the effects of two different lighting systems (LED and fluorescent) on an in vitro culture were analysed for the morphological characteristics of the growth and photosynthetic pigment content in P. pseudostrobus seedlings. The length and root size of the seedlings were affected by the type of illumination, where a red LED light was the most effective at 30 days of evaluation. However, a blue LED light was equally effective as a red LED light at 60 days of seedling development. On the other hand, the fluorescent light was better in terms of the number of needles in the first stage, but we found the blue LED light to be better in the second stage. For the photosynthetic pigment content, the highest values were found with the blue LED light. The results showed that the LED lighting system favours the growth, development, and photosynthetic pigment content of the species under study.

Keywords: conifers; in vitro culture; light-emitting diodes (LEDs); plant tissue culture; seedlings

Published: August 26, 2022  Show citation

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Marín-Martínez LA, Iglesias-Andreu LG. Effect of LED lights on the in vitro growth of Pinus pseudostrobus Lindl., plants. J. For. Sci.. 2022;68(8):311-317. doi: 10.17221/43/2022-JFS.
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