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Changes in spectral properties of detached leaves
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Daughtry, C. S. T. Biehl, L. L. |
| Copyright Year | 1984 |
| Description | If leaf senescence can be delayed for several days without significant changes in spectral properties, then samples of leaves at remote test sites could be prepared and shipped to laboratories to measure spectral properties. The changes in spectral properties of detached leaves were determined. Leaves from red birch and red pine were immersed in water or 0.001 M benzylaminopurine (BAP) and stored in plastic bags in the dark at either 5 or 25 C. Total directional-hemispherical reflectance and transmittance of the adaxial surface of birch leaves were measured over the 400 to 1100 nm wavelength region with a spectroradiometer and integrating sphere. Pine needles were taped together and reflectance of the mat of needles was measured. Spectral properties changed less than 5% of initial values during the first week when leaves were stored at 5 C. Storage at 25 C promoted rapid senescence and large changes in spectral properties. BAP delayed, but did not stop, senescence at 25 C. |
| File Size | 9254210 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850007934 |
| Archival Resource Key | ark:/13960/t1fj79d3t |
| Language | English |
| Publisher Date | 1984-06-15 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Darkness Earth Resources Program Deciduous Trees Absorptance Transmittance Leaves Spectroradiometers Storage Configurations Analysis of Variance Reflectance Aging Biology Low Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
