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Effect of Salicylic acid and Uniconazole on Pigments and Antioxidant activities in Panicum miliaceum (Broomcorn millet or Proso millet)

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Author Affiliations

  • 1Department of Life Sciences, Lachoo Memorial College of Science and Technology, Jodhpur (Rajasthan), India
  • 2Department of Life Sciences, Lachoo Memorial College of Science and Technology, Jodhpur (Rajasthan), India

Res. J. Recent Sci., Volume 14, Issue (3), Pages 19-27, July,2 (2025)

Abstract

Different concentrations of salicylic acid (SA) and uniconazole (UCZ) were tested for their effects on chlorophyll content, ascorbic acid, phenol, catalase, and polyphenol oxidase in laboratory-grown Panicum miliaceum (TNAU-149 and K-1 cultivar) seedlings. It is well established that applying uniconazole and salicylic acid boosts antioxidant activity and aids plant growth under stressful environments. Thus, this study's objective was to evaluate how salicylic acid and uniconazole affected different enzymatic activities and plant pigments in two Panicum miliaceum cultivars. At both concentrations, SA decreased the ascorbic acid, chlorophyll a, b and carotenoid content in TNAU-149 seedlings. However, SA only reduced the levels of carotenoid, ascorbic acid, and chlorophyll a, b in K-1 seedlings at higher concentrations. In K-1 and TNAU-149 seedlings, SA raised polyphenol oxidase, catalase, and phenol levels. In both TNAU-149 and K-1 seedlings, uniconazole raised the levels of phenol, carotenoid, chlorophyll a and b, and catalase activity, while decreasing the levels of ascorbic acid. In K-1, uniconazole reduced polyphenol oxidase, while in TNAU-149 seedlings, it increased.

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