Effects of light spectrum and UV-A radiation on in vitro germination and morphophysiological parameters of Solanum pimpinellifolium seeds

Guilherme Rafael do Prado; Douglas Augusto Gaspio; Matheus Vinícius Abadia Ventura; Antonio Carlos Pereira de Menezes Filho

doi:10.14295/cerrado.v3i1.817

Authors

Guilherme Rafael do Prado UniBRAS University Center Rio Verde, Rio Verde, Goiás, Brazil https://orcid.org/0000-0002-6392-0168
Douglas Augusto Gaspio UniBRAS University Center Rio Verde, Rio Verde, Goiás, Brazil https://orcid.org/0000-0001-5719-6786
Matheus Vinícius Abadia Ventura Goiano Federal Institute, Rio Verde, Goiás, Brazil https://orcid.org/0000-0001-9114-121X
Antonio Carlos Pereira de Menezes Filho Jataí Federal University, Jataí, Goiás, Brazil https://orcid.org/0000-0003-3443-4205

DOI:

https://doi.org/10.14295/cerrado.v3i1.817

Keywords:

Solanum genus, UV-A radiation, seedling mass, seedling root

Abstract

Different light spectra, such as red, yellow, green, and blue, can exert distinct effects on germination rates and on the morphophysiological traits of seedlings and plants at various developmental stages. In contrast, energy sources such as UV-A radiation often produce adverse and potentially harmful effects. In this study, we evaluated the influence of different light spectra and UV-A radiation on the in vitro germination and early development of tomato cv. Cherry seedlings (Solanum pimpinellifolium), including shoot length, root length, and fresh and dry biomass. Our results showed that germination rates did not differ among the evaluated light spectra or darkness; however, UV-A radiation proved to be extremely detrimental. Darkness promoted the greatest shoot elongation, while red and green spectra yielded the highest root lengths. The green spectrum resulted in the greatest fresh biomass accumulation, whereas the yellow, green, and dark treatments produced the highest dry biomass. Consistently, UV-A radiation was the most harmful factor across all evaluated parameters. Overall, the appropriate selection of light spectra can enhance germination and morphophysiological performance in tomato cv. Cherry seedlings grown in vitro, whereas exposure to UV-A radiation should be strictly avoided during germination and early development.

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