The biological control mechanism of Aspergillus flavus (aflatoxigenic) strains in groundnuts with atoxigenic strains from the same species through competitive exclusion employed the use of endemic and well-adapted strains within the agro-ecological zones of Zimbabwe. The selected elite non-aflatoxigenic isolates of A. flavus native to Zimbabwe were evaluated for their capability to reduce aflatoxin contamination in groundnuts under laboratory conditions. Average reduction percentages in aflatoxin B concentration for the 2019 and 2020 set of experiments ranged from 91.6 ± 3.4 to 95.8 ± 3.1% and 90.29 ± 3.6% to 95.29 ± 4.1%, respectively. Levels of aflatoxin in the co-inoculation research experiments administered were significantly reduced in all the experimental units carried out. Treatment efficiencies of the tested isolates in this study at 4:1 and 2:1 ranged from 1.20 to 2.52 and from 1.02 to 1.21, respectively. The efficacy of the tested non-aflatoxigenic strains against the aflatoxigenic strain native to Zimbabwe (ZMW 0127) indicates that the non-aflatoxigenic isolates of A. flavus. have sound practical applications against vast communities of aflatoxin-producing fungi across all the agro-ecological zones in Zimbabwe. The recognized non-aflatoxigenic isolates will be of an incentive as dynamic active ingredients in biocontrol formulations for the decrease in aflatoxins in groundnuts grown in Zimbabwe.

中文翻译：

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生物竞争排斥：非黄曲霉毒素的功效曲霉中黄曲霉毒素的控制部黄热病-L形态黄曲霉在落花生（花生L.）

花生中黄曲霉（产黄曲霉）菌株的生物控制机制是通过竞争性排除来自同一物种的无产毒菌株，利用津巴布韦农业生态区内的地方性和适应性强的菌株。对选定的津巴布韦原生黄曲霉属非黄曲霉毒素优良分离株在实验室条件下减少花生中黄曲霉毒素污染的能力进行了评估。2019 年和 2020 年一组实验的黄曲霉毒素 B 浓度平均降低百分比分别为 91.6 ± 3.4 至 95.8 ± 3.1% 和 90.29 ± 3.6% 至 95.29 ± 4.1%。在所有进行的实验单位中，共同接种研究实验中的黄曲霉毒素水平显着降低。本研究中测试分离株的处理效率为 4：1 和 2:1 的范围分别为 1.20 到 2.52 和 1.02 到 1.21。所测试的非黄曲霉毒素菌株对津巴布韦原生的黄曲霉毒素菌株 (ZMW 0127) 的功效表明黄曲霉的非黄曲霉毒素分离株。对津巴布韦所有农业生态区的大量产黄曲霉毒素真菌群落具有良好的实际应用。公认的非黄曲霉毒素分离株将作为生物防治配方中的动态活性成分，有助于减少津巴布韦种植的花生中的黄曲霉毒素。对津巴布韦所有农业生态区的大量产黄曲霉毒素真菌群落具有良好的实际应用。公认的非黄曲霉毒素分离株将作为生物防治配方中的动态活性成分，有助于减少津巴布韦种植的花生中的黄曲霉毒素。对津巴布韦所有农业生态区的大量产黄曲霉毒素真菌群落具有良好的实际应用。公认的非黄曲霉毒素分离株将作为生物防治配方中的动态活性成分，有助于减少津巴布韦种植的花生中的黄曲霉毒素。