文献类型： 外文期刊

作者： Ci, Dunwei ¹ ; Qin, Feifei ¹ ; Tang, Zhaohui ² ; Zhang, Guanchu ¹ ; Zhang, Jialei ² ; Si, Tong ³ ; Yang, Jishun ¹ ; Xu, Yang ¹ ; Yu, Tianyi ¹ ; Xu, Manlin ¹ ; He, Kang ¹ ;

作者机构： 1.Shandong Peanut Res Inst, Qingdao 266100, Peoples R China

2.Shandong Acad Agr Sci, Jinan 250100, Peoples R China

3.Qingdao Agr Univ, Coll Agron, Qingdao 266109, Peoples R China

关键词： arbuscular mycorrhizal fungi; peanuts; saline-alkali soil; soil enzyme activity; soil nutrient

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 19 期

页码：

收录情况： SCI

摘要： Peanut (Arachis hypogaea L.) is an important oil and cash crop. An efficient utilization of saline-alkali soil resources, the development of peanut planting in saline-alkali soil, and obtaining high and stable yield have become urgent needs to ensure peanut production. Arbuscular mycorrhizal fungi (AMF) have been reported to develop the potential productivity of host plants and improve their salt resistance and tolerance. However, there is still limited research on promoting the growth and morphology of peanut roots. Therefore, in this study, seeds of salt-tolerant peanut variety "HY 25" were coated with commercial AMF inoculant before being planted in saline-alkali and normal soils to investigate the effects of AMF on peanut root growth and rhizosphere soil. The results showed that root morphological characteristics were significantly increased by the use of AMF at the podding stage in saline-alkali soil and from the flowering and pegging stage to the maturity stage in normal soil. Of note, the total root volume of peanut inoculated with AMF significantly increased by 31.57% during the podding stage in saline-alkali soil. Meanwhile, AMF significantly increased the phosphatase and invertase activities in the peanut rhizosphere of saline-alkali soil from the flowering stage to maturity stage and soil CAT activity at the maturity stage (41.16 similar to 48.82%). In normal soil, soil phosphatase and urease activities were enhanced by AMF at the flowering stage and the podding stage, respectively. AMF also increased the contents of soil organic matter, available phosphorus, and hydrolysable nitrogen, but decreased soil EC in saline-alkali soil. In addition to the significant increase in soil available phosphorus content, AMF had no significant effect on the physical and chemical properties of the soil and other soil nutrients in normal soil. AMF significantly increased pod biomass and yield in saline-alkali soil and normal soil, and improved their agronomic characteristics. In conclusion, peanut seeds coated with AMF improved the root morphological characteristics of peanuts and improved the physical and chemical properties in peanut rhizosphere, especially in saline-alkali soil. The process of rhizosphere soil nutrient transformation was also enhanced. Finally, AMF improved plant agronomic traits to increase the pod yield (16.5 similar to 21.9%). This study provides the theoretical basis and technical support for the application of AMF in peanut production in saline-alkali soil.