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Proceedings Paper

Use Of Laser Fluorescence To Study Lettuce Growth And Development Under Controlled Environment
Author(s): E. J. Brach; M. A. Klyne; T. Phan; J. J. Jasmin
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Paper 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.

Paper Details

Date Published: 9 November 1978
PDF: 7 pages
Proc. SPIE 0158, Laser Spectroscopy: Applications and Techniques, (9 November 1978); doi: 10.1117/12.956829
Show Author Affiliations
E. J. Brach, Engineering and Statistical Research Institute (Canada)
M. A. Klyne, Univ. de Montreal (Canada)
T. Phan, Univ. de Montreal (Canada)
J. J. Jasmin, Agriculture Canada (Canada)

Published in SPIE Proceedings Vol. 0158:
Laser Spectroscopy: Applications and Techniques
Howard R. Schlossberg, Editor(s)

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