Spectral responses of jojoba under salinity stress |
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Authors: | P H V Vasudeva Rao E Amminedu R V Rama Rao |
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Institution: | 1. Centre for Remote Sensing, Department of Geo-Engineering, Andhra University, 530 003, Visakhapatnam
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Abstract: | Spectral reflectance characteristics of jojoba (Simmondsia chinensis (Link) Schneid.), a dioecious member of Buxaceae have been studied, especially under salinity stress. Reflectance is minimum at bands 1 and 2 (450–520 nm and 520–590 run) of visible range and maximum at bands 3 and 4 (620–680 nm and 770–860 nm) of near infrared range. At all wavelength intervals, male plants have greater reflectance than females. Reflectance in near infrared range (band 4) decreases with increasing age and leaf area index (LAI). A reverse trend occurs at band 3. Absorptance increases in visible as well as Infrared ranges with increasing salinity from control to 10 PSU of sea water concentration. |
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