Scholarlink

<p>This study examined the allelopathic interactions between twelve cultivars of common bean (<i>Phaseolus vulgaris</i>) and <i>Datura stramonium</i> under controlled laboratory conditions using the equal agar space method. The objectives were to evaluate the allelopathic potential of bean cultivars on <i>Datura stramonium</i> seedling growth and to assess the sensitivity of bean cultivars to allelochemicals released by <i>Datura stramonium</i>. Two reciprocal experiments were conducted: in the first, bean cultivars acted as allelochemical donors and <i>Datura stramonium</i> as the recipient; in the second, the roles were reversed. Growth parameters, including root and shoot length, fresh and dry weight, and antioxidant enzyme activities (peroxidase and catalase), were measured ten days after exposure. Significant genotypic variation was observed in both allelopathic potential and allelochemical tolerance. Most bean cultivars inhibited <i>Datura stramonium</i> growth, particularly root elongation and biomass accumulation. The ‘Khomein’ cultivar exhibited the strongest inhibitory effects (up to 45% reduction in root dry weight). Conversely, <i>Datura stramonium</i> allelopathy suppressed bean seedling growth and induced oxidative stress responses, reflected by increased antioxidant enzyme activity. The degree of sensitivity varied among cultivars, with ‘Khomein’ and ‘Uzbekistan’ showing high tolerance, while ‘Sadri’, ‘Naz’, and ‘China’ were the most affected. Cluster analysis grouped cultivars according to their allelopathic activity and tolerance level, confirming considerable genetic variability. Overall, the findings highlight ‘Khomein’ as a promising cultivar combining strong allelopathic potential with high tolerance to allelochemicals, suggesting its potential use in breeding programs and sustainable weed management strategies.</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

Allelopathic potential and allelochemical tolerance of bean (Phaseolus vulgaris L.) cultivars in interaction with Datura stramonium L

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月15日

查看全文
  • Mehdi Haghdost,
  • Mohamad Hossein Ehtemam,
  • Hassan Karimmojeni,
  • Abbas ghafori

摘要

This study examined the allelopathic interactions between twelve cultivars of common bean (Phaseolus vulgaris) and Datura stramonium under controlled laboratory conditions using the equal agar space method. The objectives were to evaluate the allelopathic potential of bean cultivars on Datura stramonium seedling growth and to assess the sensitivity of bean cultivars to allelochemicals released by Datura stramonium. Two reciprocal experiments were conducted: in the first, bean cultivars acted as allelochemical donors and Datura stramonium as the recipient; in the second, the roles were reversed. Growth parameters, including root and shoot length, fresh and dry weight, and antioxidant enzyme activities (peroxidase and catalase), were measured ten days after exposure. Significant genotypic variation was observed in both allelopathic potential and allelochemical tolerance. Most bean cultivars inhibited Datura stramonium growth, particularly root elongation and biomass accumulation. The ‘Khomein’ cultivar exhibited the strongest inhibitory effects (up to 45% reduction in root dry weight). Conversely, Datura stramonium allelopathy suppressed bean seedling growth and induced oxidative stress responses, reflected by increased antioxidant enzyme activity. The degree of sensitivity varied among cultivars, with ‘Khomein’ and ‘Uzbekistan’ showing high tolerance, while ‘Sadri’, ‘Naz’, and ‘China’ were the most affected. Cluster analysis grouped cultivars according to their allelopathic activity and tolerance level, confirming considerable genetic variability. Overall, the findings highlight ‘Khomein’ as a promising cultivar combining strong allelopathic potential with high tolerance to allelochemicals, suggesting its potential use in breeding programs and sustainable weed management strategies.