Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features
Drought is one of the major abiotic stresses that limit soybean production worldwide. This study was conducted to determine whether soybean cultivars with divergent growth habits respond differently to drought stress at the vegetative growth stage regarding canopy reflectance, physiological, and gas...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2019-01-01
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| Series: | Journal of Plant Interactions |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17429145.2019.1662499 |
| _version_ | 1818915102448943104 |
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| author | Chathurika Wijewardana Firas A. Alsajri J. Trenton Irby L. Jason Krutz Bobby Golden W. Brien Henry Wei Gao K. Raja Reddy |
| author_facet | Chathurika Wijewardana Firas A. Alsajri J. Trenton Irby L. Jason Krutz Bobby Golden W. Brien Henry Wei Gao K. Raja Reddy |
| author_sort | Chathurika Wijewardana |
| collection | DOAJ |
| description | Drought is one of the major abiotic stresses that limit soybean production worldwide. This study was conducted to determine whether soybean cultivars with divergent growth habits respond differently to drought stress at the vegetative growth stage regarding canopy reflectance, physiological, and gas exchange traits under controlled conditions. Soil moisture content was positively correlated with mid-day leaf water potential. Pooled over cultivar, photosynthesis and stomatal conductance were highly correlated with mid-day leaf water potential, while Ci/Ca exhibited a weak positive correlation. These data indicate that, regardless of cultivar, the decrease in net photosynthesis is mainly due to stomatal closure. For both cultivars, drought stress increased soybean canopy reflectance in the visible range of the spectrum but decreased reflectance in the near-infrared region. The quantified physiological traits would be useful to understand plant water relations and canopy structure to help soybean growers to make field management decisions during the growing season. |
| first_indexed | 2024-12-19T23:56:56Z |
| format | Article |
| id | doaj.art-0280e5a39a7d4168ab6a6de57f01b8bb |
| institution | Directory Open Access Journal |
| issn | 1742-9145 1742-9153 |
| language | English |
| last_indexed | 2024-12-19T23:56:56Z |
| publishDate | 2019-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Plant Interactions |
| spelling | doaj.art-0280e5a39a7d4168ab6a6de57f01b8bb2022-12-21T20:00:58ZengTaylor & Francis GroupJournal of Plant Interactions1742-91451742-91532019-01-0114153354310.1080/17429145.2019.16624991662499Physiological assessment of water deficit in soybean using midday leaf water potential and spectral featuresChathurika Wijewardana0Firas A. Alsajri1J. Trenton Irby2L. Jason Krutz3Bobby Golden4W. Brien Henry5Wei Gao6K. Raja Reddy7Department of Plant and Soil Sciences, Mississippi State UniversityDepartment of Plant and Soil Sciences, Mississippi State UniversityDepartment of Plant and Soil Sciences, Mississippi State UniversityMississippi Water Resources Research Institute, Mississippi State UniversityDelta Research and Extension CenterDepartment of Plant and Soil Sciences, Mississippi State UniversityUSDA-UV-B Monitoring Network, Natural Resource Ecology Lab., Colorado State UniversityDepartment of Plant and Soil Sciences, Mississippi State UniversityDrought is one of the major abiotic stresses that limit soybean production worldwide. This study was conducted to determine whether soybean cultivars with divergent growth habits respond differently to drought stress at the vegetative growth stage regarding canopy reflectance, physiological, and gas exchange traits under controlled conditions. Soil moisture content was positively correlated with mid-day leaf water potential. Pooled over cultivar, photosynthesis and stomatal conductance were highly correlated with mid-day leaf water potential, while Ci/Ca exhibited a weak positive correlation. These data indicate that, regardless of cultivar, the decrease in net photosynthesis is mainly due to stomatal closure. For both cultivars, drought stress increased soybean canopy reflectance in the visible range of the spectrum but decreased reflectance in the near-infrared region. The quantified physiological traits would be useful to understand plant water relations and canopy structure to help soybean growers to make field management decisions during the growing season.http://dx.doi.org/10.1080/17429145.2019.1662499vegetative growthphotosynthesiscrop reflectanceindeterminatespectral indiceswavelength |
| spellingShingle | Chathurika Wijewardana Firas A. Alsajri J. Trenton Irby L. Jason Krutz Bobby Golden W. Brien Henry Wei Gao K. Raja Reddy Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features Journal of Plant Interactions vegetative growth photosynthesis crop reflectance indeterminate spectral indices wavelength |
| title | Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features |
| title_full | Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features |
| title_fullStr | Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features |
| title_full_unstemmed | Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features |
| title_short | Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features |
| title_sort | physiological assessment of water deficit in soybean using midday leaf water potential and spectral features |
| topic | vegetative growth photosynthesis crop reflectance indeterminate spectral indices wavelength |
| url | http://dx.doi.org/10.1080/17429145.2019.1662499 |
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