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Using violet laser-induced chlorophyll fluorescence emission spectra for crop yield assessment of cowpea (Vigna unguiculata (L) Walp) varieties

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dc.contributor.author Anderson, Benjamin
dc.contributor.author Buah-Bassuah, Paul K
dc.contributor.author Tetteh, Jonathan P
dc.date.accessioned 2021-10-29T10:31:16Z
dc.date.available 2021-10-29T10:31:16Z
dc.date.issued 2003
dc.identifier.issn 23105496
dc.identifier.uri http://hdl.handle.net/123456789/6327
dc.description 12p:, ill. en_US
dc.description.abstract The use of violet laser-induced chlorophyll fluorescence (LICF) emission spectra to monitor the growth of five varieties of cowpea in the University of Cape Coast Botanical Garden is presented. Radiation from a continuous-wave violet laser diode emitting at 396 nm through a fibre is closely incident on in vivo leaves of cowpea to excite chlorophyll fluorescence, which is detected by an integrated spectrometer with CCD readout. The chlorophyll fluorescence spectra with peaks at 683 and 731 nm were used for growth monitoring of the cowpea plants over three weeks and analysed using Gaussian spectral functions with curve fitted parameters to determine the peak positions, area under the spectral curve and the intensity ratio F683/F731. The variation in the intensity ratio of the chlorophyll bands showed sensitive changes indicating the photosynthetic activity of the cowpea varieties. A discussion of the fluorescence result as compared to conventional assessment is presented with regard to discrimination between the cowpea varieties in terms of crop yield performance en_US
dc.language.iso en en_US
dc.publisher University of Cape Coast en_US
dc.subject Chlorophyll fluorescence spectra en_US
dc.subject Violet laser diode spectrometer en_US
dc.subject Cowpea varieties yield en_US
dc.title Using violet laser-induced chlorophyll fluorescence emission spectra for crop yield assessment of cowpea (Vigna unguiculata (L) Walp) varieties en_US
dc.type Article en_US


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