Scholarlink

<p>Allelopathy involves the release of chemical substances that positively or negatively influence the growth of neighbouring plants. The study aimed to examine the allelopathic potential of aqueous leaf extract of <i>Ocimum americanum</i> on the seed germination and growth of chickpea (<i>Cicer arietinum</i>), flax (<i>Linum usitatissimum</i>), and aromatic rice (<i>Oryza sativa</i> var. Gobindobhog). A total of seven aqueous leaf extract concentrations (0.5, 1, 2.5, 4, 5, 8 and 10%) were prepared and applied to the tested crops in laboratory conditions and pot trials. The study revealed that lower concentration (0.5%) has a pronounced stimulatory effect, with increases of + 4.25%, + 143.28%, and + 41.82% in seed germination, root, and shoot length, respectively of chickpea seedlings. However, this low concentration (0.5%) inhibited flax and rice seedlings. The bi-phasic (hormesis) dose response was observed in the growth and development of chickpea seedlings. A high-performance liquid chromatography (HPLC) study revealed 20 potent allelochemicals in the methanolic leaf extract, including 12 phenolic acids and 8 flavonoids. The study suggests that the management of this weed species should be considered before growing it in the tested crop fields. The research also emphasized understanding weed-crop interactions for effective management aimed at sustainable conservation of plant resources.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Biphasic allelopathic activity of a weed species (Ocimum americanum) on multiple traits associated with the growth and development of selected crops

  • 期刊论文

  • 发表日期：

    2026年6月2日

查看全文
  • Satyajit Oraon,
  • Subrata Mondal

摘要

Allelopathy involves the release of chemical substances that positively or negatively influence the growth of neighbouring plants. The study aimed to examine the allelopathic potential of aqueous leaf extract of Ocimum americanum on the seed germination and growth of chickpea (Cicer arietinum), flax (Linum usitatissimum), and aromatic rice (Oryza sativa var. Gobindobhog). A total of seven aqueous leaf extract concentrations (0.5, 1, 2.5, 4, 5, 8 and 10%) were prepared and applied to the tested crops in laboratory conditions and pot trials. The study revealed that lower concentration (0.5%) has a pronounced stimulatory effect, with increases of + 4.25%, + 143.28%, and + 41.82% in seed germination, root, and shoot length, respectively of chickpea seedlings. However, this low concentration (0.5%) inhibited flax and rice seedlings. The bi-phasic (hormesis) dose response was observed in the growth and development of chickpea seedlings. A high-performance liquid chromatography (HPLC) study revealed 20 potent allelochemicals in the methanolic leaf extract, including 12 phenolic acids and 8 flavonoids. The study suggests that the management of this weed species should be considered before growing it in the tested crop fields. The research also emphasized understanding weed-crop interactions for effective management aimed at sustainable conservation of plant resources.