Received: 11-12-2023 / Accepted: 12-04-2024
In Vietnam, potato (Solanum tuberosum) is one of the winter crops with high economic efficiency. In addition to inorganic and organic fertilizers, the use of plant endophytic microorganisms with the ability to fix nitrogen, solubilize phosphate, and produce IAA has been proven to be a beneficial and sustainable approach for promoting crop growth. This study was conducted to isolate and investigate the applicability of eight endophytic bacterial isolates on in vitroSolara potato plants. The data indicated that all eight isolates wereable to synthesize IAA. In addition, three isolates (Iso-5, Iso-19, and Iso-21) were able to fix nitrogen. Moreover, six isolates (Iso-2, Iso-5, Iso-6, Iso-20, Iso-21, and Iso-22) were able to solubilize phosphate. Three isolates, including Iso-2, Iso-12 and Iso-22 had the ability to stimulate the growth of tissue-cultured Solara potato plants by improving plant height, root length, fresh weight, and dry weight. In conclusion, three isolates (Iso-2, Iso-12, and Iso-22) are potential bacterial isolates could be usedin in vivotesting on the growth and development of potatoes.
