School of Agriculture, Yunnan University, Kunming, Yunnan, 650504, China.
Department of Environmental Sciences, The University of Lahore, Lahore, 54590, Pakistan.
BMC Plant Biol. 2024 Sep 14;24(1):862. doi: 10.1186/s12870-024-05576-6.
Drought poses a significant ecological threat that limits the production of crops worldwide. The objective of this study to examine the impact of soil applied biochar (BC) and peatmoss (PM) on the morpho-biochemical and quality traits of tobacco plants under drought conditions. In the present experiment work, a pot trial was conducted with two levels of drought severity (~ well-watered 75 ± 5% field capacity) and severe drought stress (~ 35 ± 5% field capacity), two levels of peatmoss (PM) @ 5% [PM+ (with peatmoss) and PM- (without peatmoss)] and three levels of rice straw biochar (BC = no biochar; BC = 150 mg kg; and BC = 300 mg kg of soil) in tobacco plants. The results indicate that drought conditions significantly impacted the performance of tobacco plants. However, the combined approach of BC and PM significantly improved the growth, biomass, and total chlorophyll content (27.94%) and carotenoids (32.00%) of tobacco. This study further revealed that the drought conditions decreased the production of lipid peroxidation and proline accumulation. But the synergistic approach of BC and PM application increased soluble sugars (17.63 and 12.20%), soluble protein (31.16 and 15.88%), decreased the proline accumulation (13.92 and 9.03%), and MDA content (16.40 and 8.62%) under control and drought stressed conditions, respectively. Furthermore, the combined approach of BC and PM also improved the leaf potassium content (19.02%) by limiting the chloride ions (33.33%) under drought stressed conditions. Altogether, the balanced application of PM and BC has significant potential as an effective approach and sustainable method to increase the tolerance of tobacco plants subjected to drought conditions. This research uniquely highlights the combined potential of PM and BC as an eco-friendly strategy to enhance plant resilience under drought conditions, offering new insights into sustainable agricultural practices.
干旱对全球作物生产造成了重大的生态威胁。本研究的目的是研究在干旱条件下，土壤施加生物炭（BC）和泥炭藓（PM）对烟草植株形态、生物化学和品质特性的影响。在本实验工作中，进行了一个盆栽试验，设置了两个干旱严重程度水平（~ 充分浇水 75 ± 5%田间持水量）和严重干旱胁迫（~ 35 ± 5%田间持水量），两个泥炭藓水平（PM）@ 5%[PM+（含泥炭藓）和 PM-（不含泥炭藓）]和三个水稻秸秆生物炭水平（BC= 无生物炭；BC= 150 mg kg；BC= 300 mg kg 土壤）在烟草植株中。结果表明，干旱条件显著影响了烟草植株的性能。然而，BC 和 PM 的联合应用显著提高了烟草的生长、生物量和总叶绿素含量（27.94%）和类胡萝卜素（32.00%）。本研究进一步表明，干旱条件下，脂质过氧化产物的产生和脯氨酸积累减少。但 BC 和 PM 联合应用增加了可溶性糖（17.63 和 12.20%）、可溶性蛋白（31.16 和 15.88%），降低了脯氨酸积累（13.92 和 9.03%）和 MDA 含量（16.40 和 8.62%）在对照和干旱胁迫条件下，分别。此外，BC 和 PM 的联合应用还通过限制氯离子（33.33%）提高了干旱胁迫条件下叶片钾含量（19.02%）。总之，PM 和 BC 的平衡应用具有显著的潜力，可以作为一种有效方法和可持续方法来提高烟草植株对干旱条件的耐受性。本研究独特地强调了 PM 和 BC 的联合潜力，作为一种在干旱条件下增强植物恢复力的环保策略，为可持续农业实践提供了新的见解。
