The current investigation was carried out to study the phytolith occluded carbon (PhytOC) sequestration potential of 15 rice cultivars. The dry matter yield of cultivars varied from 62 to 115 g pot−1. Phytolith content and carbon content of phytoliths varied from 12.46 to 23.6 % and 1.4 to 3.3 % for straw; 5.5 to 11.4 % and 1.1 to 2.7 % for root; 13.1 to 24.3 % and 2.1 to 6.3 % for husk; 0.2 to 1.9 % and 0.7 to 1.4 % for grain. The distribution of PhytOC was highest in straw followed by husk, root and grains, respectively. The total PhytOC yield of cultivars was between 66.6 and 143 g e-CO2 pot−1. Preference of high PhytOC yielding cultivar over low PhytOC yielding cultivar for rice production, results in 76.4 g e-CO2 pot−1 of additional C securely sequestered in phytoliths of rice, would substantially increase the bio-sequestration of terrestrial carbon.
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Prajapati, K., Rajendiran, S., Vassanda Coumar, M. et al. Bio-Sequestration of Carbon in Rice Phytoliths. Natl. Acad. Sci. Lett. 38, 129–133 (2015). https://doi.org/10.1007/s40009-014-0313-9
- Phytolith occluded carbon
- Carbon sequestration
- Rice cultivars