https://doi.org/10.1140/epjst/e2008-00497-1
The carotenoid content in seedlings of maize seeds irradiated by a 650 nm diode laser: Qualitative photoacoustic study
1
Instituto Politécnico Nacional, SEPI-ESIME Zacatenco, Unidad Profesional “Adolfo López Mateos”, Col. Lindavista, CP 07738, Mexico D.F., Mexico
2
Colegio de Postgraduados, Programa de Semillas (IREGEP), Mont., Texcoco, Edo. de Mexico, Mexico 56180, D.F., Mexico
3
Departamento de Física, Centro de Investigación y de Estudios Avanzados-IPN, A.P. 14740, Mexico 07360, D.F., Mexico
4
Unidad Académica de Física, Universidad Autónoma de Zacatecas, A.P. 580, Zacatecas, Zac., Mexico 98068, D.F., Mexico
The aim of the present study was to obtain qualitative content of carotenoids in the leaves of maize seedlings the seeds of which were irradiated by the 650 nm diode laser. Four different irradiation doses have been applied; and the control (non-irradiated) seeds used for comparison purposes. Optical absorption spectra of leaves from seedlings were recorded by means of photoacoustic spectroscopy in the 400 to 500 nm range. The experimental unit comprised 10 seeds, among which one seedling was selected at random for each repetition. Data was subjected to variance analysis (ANOVA) using the SAS GLM procedures (SAS, 1998 version). The ANOVA revealed significant (p < 0.05) differences among treatments in the 471 to 478 nm range.
© EDP Sciences, Springer-Verlag, 2008
