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<p>Allelopathy is an antagonistic activity exhibited by certain plants, enabling them to compete with neighboring species. The study aims to explore the allelopathic potential of the rhizome leachate (USL-01) of <i>Gloriosa superba</i> L. on the weedy species <i>Amaranthus viridis</i> L. by examining changes in seed germination behavior and biochemical parameters of <i>A. viridis</i> seedlings at different germination times. The effect of USL-01 (40&#xa0;mg/ml, w/v) was compared with other chemicals like H<sub>2</sub>O<sub>2</sub> (5%, v/v), kinetin (1&#xa0;µg/ml, w/v), and colchicine (50.0&#xa0;µg/ml, w/v), either alone or in combination. The seeds of <i>A. viridis</i> were primed with these chemicals for 6&#xa0;h and 12&#xa0;h, air-dried, and then used for germination assays. It was observed that the leachate USL-01, H<sub>2</sub>O<sub>2</sub>, and colchicine treatments caused significant impairment of seed germination, increased T<sub>50</sub> values, and lowered the germination energy and seedling physio-biochemical parameters, including total carbohydrates, reduced sugars, amino acids, and total protein contents, in <i>A. viridis</i> seeds. It also increased the membrane permeability. At the same time, kinetin and its combination minimized the retardation factors of those treatments, equivalent to the untreated control. The study concludes that the USL-01 contains allelochemicals responsible for these growth effects, which interfere with the metabolism of sugars, amino acids, and proteins. Therefore, the compounds of USL-01, alone or in combination with H<sub>2</sub>O<sub>2</sub> or colchicine, could be an excellent allelochemical agent in controlling weed species like <i>A. viridis</i> through 6-hrs and 12-hrs seed pretreatment.</p>

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Allelopathic potential of Gloriosa superba L. rhizome leachate on Amaranthus viridis L., a weedy herb of India

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • Sudipta Kumbhakar,
  • Raju Saha,
  • Rajsekhar Adhikary,
  • Prashanta Kumar Mitra,
  • Vivekananda Mandal

摘要

Allelopathy is an antagonistic activity exhibited by certain plants, enabling them to compete with neighboring species. The study aims to explore the allelopathic potential of the rhizome leachate (USL-01) of Gloriosa superba L. on the weedy species Amaranthus viridis L. by examining changes in seed germination behavior and biochemical parameters of A. viridis seedlings at different germination times. The effect of USL-01 (40 mg/ml, w/v) was compared with other chemicals like H2O2 (5%, v/v), kinetin (1 µg/ml, w/v), and colchicine (50.0 µg/ml, w/v), either alone or in combination. The seeds of A. viridis were primed with these chemicals for 6 h and 12 h, air-dried, and then used for germination assays. It was observed that the leachate USL-01, H2O2, and colchicine treatments caused significant impairment of seed germination, increased T50 values, and lowered the germination energy and seedling physio-biochemical parameters, including total carbohydrates, reduced sugars, amino acids, and total protein contents, in A. viridis seeds. It also increased the membrane permeability. At the same time, kinetin and its combination minimized the retardation factors of those treatments, equivalent to the untreated control. The study concludes that the USL-01 contains allelochemicals responsible for these growth effects, which interfere with the metabolism of sugars, amino acids, and proteins. Therefore, the compounds of USL-01, alone or in combination with H2O2 or colchicine, could be an excellent allelochemical agent in controlling weed species like A. viridis through 6-hrs and 12-hrs seed pretreatment.