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Physiological attributes associated with leaf spectral alterations in guar [Cyamopsis tetragonoloba (L.) Taub.] under drought.
- Source :
-
3 Biotech . 2/13/2021, Vol. 11 Issue 3, p1-12. 12p. - Publication Year :
- 2021
-
Abstract
- Two contrasting guar varieties [Cyamopsis tetragonoloba (L.) Taub.], RGC-1002—a better drought tolerant than RGC-936—a comparatively sensitive variety, were subjected to 8 days of water stress. The physiological characteristics of gas exchange, pigments and the spectral properties of the leaves were monitored and assessed. The guar variety, RGC-1002 exhibited higher relative water content (RWC) and biomass accumulation in water stress condition as compared to RGC-936. The RGC-1002 variety also showed a higher rate of photosynthesis, stomatal conductance, and lesser reduction in chlorophyll content as compared to RGC-936 variety. On the 8th day of drought, the leaf anthocyanin levels were also higher in RGC-1002 than RGC-936. Increased levels of anthocyanin result in decrease in absorption of light, and an increase in reflectance, and transmittance. The scattering coefficient of leaf spectra was significantly increased in RGC-936 than in RGC-1002 leaves; this is due to an increase in the size of intercellular air spaces and shrinkage of cells as a result of water loss. The leaf reflectance was also observed to be significantly increased in RGC-936 than in RGC-1002 leaves. The physiological and leaf optical observations substantiate that RGC-1002 was better adapted to water stress than RGC-936 variety. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GUAR
*LIGHT absorption
*PHOTOSYNTHETIC rates
*DROUGHTS
*REVUES
Subjects
Details
- Language :
- English
- ISSN :
- 2190572X
- Volume :
- 11
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- 3 Biotech
- Publication Type :
- Academic Journal
- Accession number :
- 148719978
- Full Text :
- https://doi.org/10.1007/s13205-021-02674-2