Effectiveness of Thidiazuron (TDZ) on Growth and Phytochemicals in In vitro Bacopa monnieri (L.) Wettst.

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Piyatida Ounnahakhongkha
Nongnuch Laohavisuti
Buppha Jongput

Abstract

          Brahmi (Bacopa monnieri (L.) Wettst.) is an aquatic plant. The aim of this research was to study the effects of Thidiazuron (TDZ) on the growth and antioxidant activities of B. monnieri (L.) Wettst. tissue culture. The explants were cultured on semi-solid MS basal medium supplemented with TDZ at 0, 0.1, 0.4, 1.6 and 6.4 mg/L. The results after 6 weeks indicated that explants grown on TDZ free MS medium exhibited significantly more growth than explants grown on media containing TDZ (P<0.05). In addition, MS medium with 0.1 and 0.4 mg/L TDZ was able to induce the diameter of multiple shoots more than other treatments (P<0.05). The fresh and dry weight of explants cultured with MS medium containing 0.4 mg/L TDZ were significantly different from all other treatments (P<0.05). The antioxidant activity was examined by five methods: total phenolic content (TPC), total flavonoid content (TFC), total saponin content (TSC), 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay and 2,2' azinobis (3-ethylbenzothiazoline-6-sulfonate) (ABTS) assay. TPC, TSC, DPPH and ABTS were significantly different in all treatments (P<0.05), but TFC did not differ significantly across the treatments (P>0.05). Consequently, TDZ free MS medium was the optimal agent to stimulate plantlet propagation and MS medium with 0.4 mg/L TDZ produced appropriate antioxidant activities for medical usefulness.

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Ounnahakhongkha, P. ., Laohavisuti, N. ., & Jongput, B. . (2020). Effectiveness of Thidiazuron (TDZ) on Growth and Phytochemicals in In vitro Bacopa monnieri (L.) Wettst. King Mongkut’s Agricultural Journal, 38(4), 468–476. retrieved from https://li01.tci-thaijo.org/index.php/agritechjournal/article/view/248343
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References

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