Allelopathic Effect of Three Wild Plants (<i>Azadirachta indica</i>, <i>Tithonia diversifolia</i>and <i>Thevetia peruviana</i>) on Tomato (<i>Lycopersicum esculentum</i>Mill.) Growth and Stimulation of Metabolites Involved in Plant Resistance

• 作者: G. Y. Fangue-Yapseu R. A. Mouafo-Tchinda M. Fomekong Kenne P. Effa Onomo P. F. Djocgoue
• 来源期刊: 美国植物学期刊(英文)
• 学科: 农学
• 关键词: Allelopathic Wild Plants GROWTH Plant Resistance TOMATO
• 年，卷（期）: 2021,（3）
• 页码范围: 285-299
• 页数: 15页
• 分类号: S64

摘要

The aim of this study was to determine the allelopathic effects of <i><span style="font-family:Verdana;">Azadirachta indica</span></i><span style="font-family:Verdana;"> oil and aqueous extracts of </span><i><span style="font-family:Verdana;">Tithonia diversifolia</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">Thevetia peruviana</span></i><span style="font-family:Verdana;"> on the growth and stimulation of metabolites involved in tomato plant resistance. Randomized in blocks within a shaded area, the different treatments prepared at 10% and 15% (v/v and w/v) in water were subsequently applied on tomatoes seeds to monitor the effect on germination, and on tomatoes leaves to monitor the effect on growth and resilience of the plants. The result showed that in stressful conditions all the treatment</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> significantly inhibit (p < 0.05) the germination capacity of the seeds from 21.22% to 92.61%, the germination rate from 39.82% to 92.76% and the germination viability of the seedlings from 64.67% to 100%. However, the negative allelopathic effect of the treatment was significantly reduced (p < 0.05) when used for germination initiation by botanical priming. In addition, while </span><i><span style="font-family:Verdana;">T. diversifolia</span></i><span style="font-family:Verdana;"> at 10% promotes a better aerial and root growth in tomato plants, </span><i><span style="font-family:Verdana;">T. peruviana</span></i><span style="font-family:Verdana;"> at 15% induces the activation of resistance mechanisms in tomato plants by increasing protein levels to 104.5%, phenol levels to 183.33% and peroxidase enzyme activity to 586.15%. Therefore, allelopathic compound of wild plants would be a good alternative for growth promotion and resistance of tomato crops.</span></span></