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Refractive index of plant cell wallsAir was replaced with media of higher refractive indices by vacuum infiltration in leaves of cucumber, blackeye pea, tomato, and string bean plants, and reflectance of noninfiltrated and infiltrated leaves was spectrophotometrically measured. Infiltrated leaves reflected less light than noninfiltrated leaves over the 500-2500-nm wavelength interval because cell wall-air interfaces were partly eliminated. Minimal reflectance should occur when the average refractive index of plant cell walls was matched by the infiltrating fluid. Although refractive indices that resulted in minimal reflectance differed among the four plant genera, an average value of 1.425 approximates the refractive index of plant cell walls for the four plant genera.
Document ID
19740034172
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Gausman, H. W.
Allen, W. A.
Escobar, D. E.
(U.S. Department of Agriculture Weslaco, Tex., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1974
Publication Information
Publication: Applied Optics
Volume: 13
Subject Category
Physics, General
Accession Number
74A16922
Funding Number(s)
CONTRACT_GRANT: NASA ORDER R-09-038-002
Distribution Limits
Public
Copyright
Other

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