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Interspecific Inhibitory Interference of Nicotiana plumbaginifolia Viv. on Pisum sativum L.
Journal of Plant Growth Regulation ( IF 3.9 ) Pub Date : 2020-10-28 , DOI: 10.1007/s00344-020-10247-5
Waseem Mushtaq , Quratul Ain , M. B. Siddiqui , Hesham F. Alharby , Khalid Rehman Hakeem

Roots of weeds that are left behind in the soil after removal of their aerial parts can reduce the growth of crops. Here we conducted an assessment to evaluate the allelopathic interference of Nicotiana plumbaginifolia roots and its rhizosphere soil on the growth of Pisum sativum L., identification of chemicals involved, the role of charcoal, the role of N and other macronutrients. Growth responses of P. sativum were analysed for (a) rhizosphere soil with and without N supplementation and (b) soil amendment with Nicotiana roots. Scanning electron microscopy-energy dispersive spectrometry (SEM–EDS) analysis of the rhizosphere soil was conducted to look for concentration of essential nutrients. Rhizosphere soil showed an inhibitory effect even with N supplementation. SEM–EDS showed a healthy concentration of essential nutrients. Root residues of Nicotiana integrated with soil do cause a reduction in seedling length (root length, shoot length) and dry biomass of recipient plant. However, a partial alleviation in growth inhibition occurred upon the addition of activated charcoal. Soils amended with root residues were rich in phenolics as compared to control. Overall, 34 compounds were reported upon GC–MS analysis which can be considered responsible for the allelopathic suppression of P. sativum. The chief component was guanosine (26.21%) followed by n-hexadecanoic acid (18.61%), oleic acid (18.29%), palmitoleic acid (4.80%), -(-)nicotine (5.09%) and solasodine (2.54%). These results show a definite role of putative allelochemicals that exerted allelopathic effects on P. sativum.

中文翻译:

Nicotiana plumbaginifolia Viv 的种间抑制干扰。在豌豆上。

除去地上部分后留在土壤中的杂草根会降低作物的生长。在这里,我们进行了一项评估,以评估烟草白花根及其根际土壤对豌豆生长的化感干扰、相关化学物质的鉴定、木炭的作用、氮和其他常量营养素的作用。对 P. sativum 的生长响应进行了分析(a)有和没有 N 补充的根际土壤和(b)有烟草根的土壤改良剂。对根际土壤进行扫描电子显微镜 - 能量色散光谱 (SEM-EDS) 分析以寻找必需营养素的浓度。即使补充氮,根际土壤也显示出抑制作用。SEM-EDS 显示必需营养素的健康浓度。与土壤结合的烟草根残体确实会导致受体植物的幼苗长度(根长度、枝条长度)和干生物量减少。然而,添加活性炭后生长抑制出现部分缓解。与对照相比,用根残留物改良的土壤富含酚类物质。总体而言,GC-MS 分析报告了 34 种化合物,这些化合物可以被认为是对 P. sativum 化感抑制的原因。主要成分是鸟苷 (26.21%),其次是正十六烷酸 (18.61%)、油酸 (18.29%)、棕榈油酸 (4.80%)、-(-)尼古丁 (5.09%) 和茄碱 (2.54%)。这些结果显示了对 P. sativum 产生化感作用的假定化感化学物质的明确作用。茎长)和受体植物的干生物量。然而,添加活性炭后生长抑制出现部分缓解。与对照相比,用根残留物改良的土壤富含酚类物质。总体而言,GC-MS 分析报告了 34 种化合物,这些化合物可以被认为是对 P. sativum 化感抑制的原因。主要成分是鸟苷 (26.21%),其次是正十六烷酸 (18.61%)、油酸 (18.29%)、棕榈油酸 (4.80%)、-(-)尼古丁 (5.09%) 和茄碱 (2.54%)。这些结果显示了对 P. sativum 产生化感作用的假定化感化学物质的明确作用。茎长)和受体植物的干生物量。然而,添加活性炭后生长抑制出现部分缓解。与对照相比,用根残留物改良的土壤富含酚类物质。总体而言,GC-MS 分析报告了 34 种化合物,这些化合物可以被认为是对 P. sativum 化感抑制的原因。主要成分是鸟苷 (26.21%),其次是正十六烷酸 (18.61%)、油酸 (18.29%)、棕榈油酸 (4.80%)、-(-)尼古丁 (5.09%) 和茄碱 (2.54%)。这些结果显示了对 P. sativum 产生化感作用的假定化感化学物质的明确作用。与对照相比,用根残留物改良的土壤富含酚类物质。总体而言,GC-MS 分析报告了 34 种化合物,这些化合物可以被认为是对 P. sativum 化感抑制的原因。主要成分是鸟苷 (26.21%),其次是正十六烷酸 (18.61%)、油酸 (18.29%)、棕榈油酸 (4.80%)、-(-)尼古丁 (5.09%) 和茄碱 (2.54%)。这些结果显示了对 P. sativum 产生化感作用的假定化感化学物质的明确作用。与对照相比,用根残留物改良的土壤富含酚类物质。总体而言,GC-MS 分析报告了 34 种化合物,这些化合物可以被认为是对 P. sativum 化感抑制的原因。主要成分是鸟苷 (26.21%),其次是正十六烷酸 (18.61%)、油酸 (18.29%)、棕榈油酸 (4.80%)、-(-)尼古丁 (5.09%) 和茄碱 (2.54%)。这些结果显示了对 P. sativum 产生化感作用的假定化感化学物质的明确作用。
更新日期:2020-10-28
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