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Zachée, Ambang
- Study of the Photo-Electric Behavior of Spinacea pleracea using the T.E-Model of Chlorophyll Pigment
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Authors
Affiliations
1 Department of Physics, Laboratory of Biophysics, Faculty of Sciences, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon
2 Department of Physics, Laboratory of Mechanics, Faculty of Sciences, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon
1 Department of Physics, Laboratory of Biophysics, Faculty of Sciences, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon
2 Department of Physics, Laboratory of Mechanics, Faculty of Sciences, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon
Source
Indian Journal of Science and Technology, Vol 11, No 20 (2018), Pagination:Abstract
Objective: To Study the photo-electric behavior of Spinacea pleracea by using the T.E-model of chlorophyll pigment. Methods/Statistical Analysis: The technic and method employed consisted on modeling the chlorophyll as an electrical circuit, to make a statistical analysis of electric conductance process of S. pleracea in light and in darkness by evaluating, the statistical average and statistical autocorrelation function, and make a temporal analysis by evaluating, the temporal average and temporal autocorrelation function. Finding: The electric conductance of Spinacea pleracea leaf plant increases when one passes from darkness to light; the spectral density of power (DSP) of the electric conductance process G(ω,t) under darkness is up to the DSP of the signal when S. pleracea is under light for the whole value of the reduced normalized frequency; the process is non-statistics in the broad sense (SSL) and non ergotic. The resemblance of the flow charge evaluated by autocorrelation functions for different values of the shift parameter is higher in light than in darkness. Application/Improvements: This study provided an additional tool to have an idea about the state of reactional center of photosystem II, knowing that the fluorescence emission testifies the loss of energy during the transfer of excitation to the reactional centers. In the same way, the electric conductance testifies the transfer of electrons released from the special chlorophyll ‘a’ of the reactional center to the photosynthetic channel.Keywords
Chlorophyll, Ergotic, Spectral Density of Power (DSP), Spinacea pleracea, Statistics in the Broad Sense (SSL)Full Text
- Numerical Messages of Plants Under Different Stresses
Abstract Views :288 |
PDF Views:78
Authors
Affiliations
1 Laboratory of Biophysics, Department of Physics,University of Yaounde I, P.O. Box 812, Yaounde, CM
2 Laboratory of Phytopathology, Department of Biology and Vegetal Physiology, University of Yaounde I, P. O. Box 812, Yaounde, CM
3 Laboratory of Mechanics, Department of Physics, University of Yaoundé I, P.O. Box 812, Yaounde, CM
1 Laboratory of Biophysics, Department of Physics,University of Yaounde I, P.O. Box 812, Yaounde, CM
2 Laboratory of Phytopathology, Department of Biology and Vegetal Physiology, University of Yaounde I, P. O. Box 812, Yaounde, CM
3 Laboratory of Mechanics, Department of Physics, University of Yaoundé I, P.O. Box 812, Yaounde, CM
Source
Current Science, Vol 117, No 12 (2019), Pagination: 2049-2052Abstract
Electrical behaviour of plants under different conditions is studied. It is obvious that electrical response of these plants is characteristic of their physiological state. The present study was conducted to first provide numerical and possible alphabetic messages corresponding to the physiological state of plants under different stresses. Secondly, to calculate and compare their entropies. We used electrical conductance values obtained during the study of electrical behaviour of Solanum lycopersicum and Spinacia oleracea under different stresses to construct the probabilities tables of symbols appearance. Using Huffman coding, we constructed dictionaries and deducted the numerical and alphabetic messages. For each plant stress, the entropy was calculated. The entropy of infected S. lycopersicum was higher than healthy plants. Numerical and alphabetic messages of healthy S. lycopersicum are ‘000111110010110010111011101100111010001- 01001011000110000’ and ‘Holy lycopersicum’ respectively. For the infected plants they are ‘110011- 11101010 10001011010111001110100010 10010000 0110001’ and ‘leaf infected up so’ respectively. Numerical and alphabetic messages of lit S. oleracea and unlit S. oleracea were respectively, ‘100101- 010011110000001111110001’, ‘up oleracea’ and ‘001100 010011110101111000110111’, ‘of Spinacia’. This study goes beyond the electric characterization of plants under stress and tries to establish a communication between plants under stress and human beings. The approach may lead to the design of a sensor to translate messages coming from plants under stress.Keywords
Entropy, Numerical Messages, Solanum lycopersicum, Spinacia oleracea, Stress.Full Text
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