A LED-Based Smart Experimental Chamber to Promote Germination and Growth of Pea and Melon Plants: Effect on the Antioxidative Metabolism
Nowadays, the use of light emitting diodes (LEDs) is expanding for plant production purposes. Nevertheless, fewer reports studied the effect of LEDs effect on seed germination and early seedling growth. In this work, an experimental red light (RL) LED chamber coupled to an electronic control system...
| Autores: | , , , , , , |
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| Tipo de documento: | capítulo de livro |
| Data de publicação: | 2021 |
| País: | España |
| Recursos: | Universidad Católica San Antonio de Murcia (UCAM) |
| Repositório: | RIUCAM. Repositorio Institucional de la Universidad Católica San Antonio de Murcia |
| OAI Identifier: | oai:repositorio.ucam.edu:10952/7748 |
| Acesso em linha: | http://hdl.handle.net/10952/7748 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Antioxidant enzymes Experimental Light Chamber Germination Light-Emitting Diode (LED) Phytochrome Red Light Seedling Growth |
| Resumo: | Nowadays, the use of light emitting diodes (LEDs) is expanding for plant production purposes. Nevertheless, fewer reports studied the effect of LEDs effect on seed germination and early seedling growth. In this work, an experimental red light (RL) LED chamber coupled to an electronic control system was designed, and used to irradiate seeds of pea and melon. An intensity of 100 μmol m-2 s-1 RL was applied for up to 60 min. As a result, RL did not change the germination rate, but enhanced significantly the early seedling growth. In both plant species, 15 min RL treatment resulted in the highest increase of seedlings fresh weight and length, while longer exposure did not show any effect on seedling growth. Remarkably, RL enhanced the growth of secondary roots, which would facilitate seedling nutrition and water uptake, leading to enhanced growth. The effect of RL on the activity of the main antioxidative metabolism enzymes differed in both species, which reflects distinct mechanisms in response to a hypothetical LED light-induced oxidative stress. Altogether, these findings contribute towards the applicability of LED technology on designing seed priming treatments that improve growth and hence productivity of relevant crop plants. |
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