Aninbon Chorkaew, Teamkao Pattrarat, Buram Kiattisak, Kaewnoo Tipawan, Ruttanaprasert Ruttanachira, Janket Anon, Mon Yi Yi, Kaewtaphan Phissanu
Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand.
Soil Science Research Group, Agricultural Production Sciences Research and Development Division, Department of Agriculture, The Ministry of Agriculture and Cooperatives, Bangkok, Thailand.
Front Plant Sci. 2024 Nov 26;15:1468636. doi: 10.3389/fpls.2024.1468636. eCollection 2024.
Drought is the one primary issue limiting peanut growth and productivity. The study aimed to investigate the effects of arbuscular mycorrhizal fungi (AMF), rhizobium (Rhi), and their combinations on phenolic content, proline content, growth, and yield of peanut under different soil water regimes. The pot experiments were carried out for two growing seasons under greenhouse conditions and designed based on a 2×3 factorial in randomized complete block design (RCBD) with four replications. Factor A comprised two soil water regimes: field capacity (FC) and 1/3 available soil water (1/3 AW), whereas factor B included three different types of microorganisms: (i) uninoculated control, (ii) arbuscular mycorrhiza (AMF), and (iii) a combination of AMF and rhizobium (Rhi) inoculations. Data were collected for growth, proline content, phenolic content, yield, and yield components. Drought stress significantly reduced in relative water content, leaf area, biomass, yield, and yield components of peanut, whereas leaf phenolic content was increased under drought stress. Higher pod dry weight was achieved under FC conditions (28.87 g plant), and it was reduced to 16.06 g plant under 1/3 FC. Interestingly, AMF+Rhi synergistically increased the leaf area compared with non-incubated peanut under 1/3 FC conditions. AMF-inoculated peanut tended to increase biomass, while the combination of AMF+Rhi tended to have higher yield components compared with uninoculated control, especially for the weight of 100 seeds.
干旱是限制花生产量的首要问题。本研究旨在探究丛枝菌根真菌（AMF）、根瘤菌（Rhi）及其组合在不同土壤水分条件下对花生酚类物质含量、脯氨酸含量、生长及产量的影响。盆栽试验在温室条件下进行了两个生长季，采用随机区组设计（RCBD）的2×3析因试验，重复4次。因素A包括两种土壤水分条件：田间持水量（FC）和1/3有效土壤水分（1/3 AW），因素B包括三种不同类型的微生物：（i）未接种对照，（ii）丛枝菌根（AMF），（iii）AMF与根瘤菌（Rhi）组合接种。收集了花生生长、脯氨酸含量、酚类物质含量、产量及产量构成因素的数据。干旱胁迫显著降低了花生的相对含水量、叶面积、生物量、产量及产量构成因素，而干旱胁迫下叶片酚类物质含量增加。在FC条件下荚果干重较高（28.87 g/株），在1/3 FC条件下降至16.06 g/株。有趣的是，在1/3 FC条件下，与未接种的花生相比，AMF+Rhi组合能协同增加叶面积。接种AMF的花生生物量有增加趋势，与未接种对照相比，AMF+Rhi组合的产量构成因素更高，尤其是百粒重。
