Muhammad Taqqi Abbas, Tehmina Anjum, Waheed Anwar, Muhammad Khurshid, Adnan Akhter
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引用次数: 0
Abstract
Biochar is considered to have the potential of managing plant diseases by activating plant defense response and influencing the soil-plant-microbe interactions. Therefore, in this study we assessed the soil biochar amendments against bacterial wilt of chilies (Ralstonia solanacearum). Cultivar specific response of chilies to biochar was characterized with reference to physiological and biochemical alterations of the plants. The biochar prepared from leaf waste (LWB) of Syzygium cumini, was applied as a soil amendment at 3 and 6% concentrations along with compost (20%) and the plants were inoculated with or without R. solanacearum. All the cultivars of chilli (Capsicum annumm L.) i.e., F1 Zenia, Desi Chilli and F1 green queen showed a positive impact of biochar amendment on plant growth even under bacterial wilt stress. Although, the reduction in percentage disease index (PDI) and disease incidence (DI) was significant for all cultivars in biochar amended treatments but resistant plant response against wilt was only recorded in cultivar F1 green queen with 6% biochar. The disease response of chili cultivars was not only dependent upon the concentration of biochar in soil but also on the phenolics, catalases and flavonoid contents of the cultivars used. Different chilli cultivars exhibited varied defense response under different biochar concentration. Different chilli cultivars showed variable plant growth in response to the leaf waste biochar amendment. Plant response to disease stress depends not only on the concentration and source of biochar but also on the cultivar. These findings will certainly add to our existing understanding of biochar induced plant resistance as well as cultivar specific chilies defense response against R. solanacearum.
生物炭被认为具有通过激活植物防御反应和影响土壤-植物-微生物相互作用来控制植物病害的潜力。因此,在本研究中,我们评估了土壤生物炭添加剂对辣椒细菌性枯萎病(Ralstonia solanacearum)的影响。根据植物的生理和生化变化,分析了辣椒对生物炭的特定反应。用烟叶废料(LWB)制备的生物炭作为土壤改良剂与堆肥(20%)一起施用,浓度分别为 3% 和 6%,植物接种或不接种 R. solanacearum。所有辣椒(Capsicum annumm L.)栽培品种,即 F1 Zenia、Desi Chilli 和 F1 Green Queen,即使在细菌枯萎病胁迫下,生物炭添加剂对植物生长也有积极影响。虽然在生物炭添加剂处理中,所有栽培品种的病害指数(PDI)和病害发生率(DI)都有显著降低,但只有 F1 绿色皇后栽培品种在添加 6% 生物炭后才对枯萎病有抗性。辣椒栽培品种对病害的反应不仅取决于土壤中生物炭的浓度,还取决于所用栽培品种的酚类物质、过氧化氢酶和类黄酮含量。不同的辣椒品种在不同的生物炭浓度下表现出不同的防御反应。不同辣椒栽培品种在叶片废料生物炭添加剂的作用下表现出不同的植物生长反应。植物对病害胁迫的反应不仅取决于生物炭的浓度和来源,还取决于栽培品种。这些发现必将加深我们对生物炭诱导的植物抗性以及辣椒栽培品种对茄碱菌防御反应的理解。
期刊介绍:
The Journal of Soil Science and Plant Nutrition is an international, peer reviewed journal devoted to publishing original research findings in the areas of soil science, plant nutrition, agriculture and environmental science.
Soil sciences submissions may cover physics, chemistry, biology, microbiology, mineralogy, ecology, pedology, soil classification and amelioration.
Plant nutrition and agriculture submissions may include plant production, physiology and metabolism of plants, plant ecology, diversity and sustainability of agricultural systems, organic and inorganic fertilization in relation to their impact on yields, quality of plants and ecological systems, and agroecosystems studies.
Submissions covering soil degradation, environmental pollution, nature conservation, and environmental protection are also welcome.
The journal considers for publication original research articles, technical notes, short communication, and reviews (both voluntary and by invitation), and letters to the editor.