Use Of Laser Fluorescence To Study Lettuce Growth And Development Under Controlled Environment

E. J. Brach; M. A. Klyne; T. Phan; J. J. Jasmin

doi:10.1117/12.956829

9 November 1978 Use Of Laser Fluorescence To Study Lettuce Growth And Development Under Controlled Environment

E. J. Brach, M. A. Klyne, T. Phan, J. J. Jasmin

Proceedings Volume 0158, Laser Spectroscopy: Applications and Techniques; (1978) https://doi.org/10.1117/12.956829
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

Experiments in 1976 and 1978 indicated that laser induced fluorescence of plants offers a means to determine plant maturity and stress, as well as identifying varietal differences within a crop. A laser fluorosensor lasing at 410 nm in the 1976 and 1978 experiments and a 337.1 nm laser in the 1976 experiment were assembled in a mobile spectrolaboratory at the Research Branch, Agriculture Canada and attached to a greenhouse where 4 different varieties of lettuce were grown under a controlled environment. The lettuce plants were excited with a 410 nm 18 mW HeCd or with a 20 mW 337.1 nm Nitrogen laser, and their fluorescence quantum yield as a function of wavelength measured and compared. The experiment demonstrated the usefulness of laser fluorometry, but not conclusively.

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E. J. Brach, M. A. Klyne, T. Phan, and J. J. Jasmin "Use Of Laser Fluorescence To Study Lettuce Growth And Development Under Controlled Environment", Proc. SPIE 0158, Laser Spectroscopy: Applications and Techniques, (9 November 1978); https://doi.org/10.1117/12.956829

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