<![CDATA[Potato (Solanum tuberosum L.) is an important crop for food diversification, yet the productivity of the local Cingkariang variety from West Sumatra remains limited due to poor seed quality and viral infection. Tissue culture provides a reliable approach to produce pathogen-free planting material. This study evaluated the interaction of NAA and BAP concentrations on the in vitro growth of Cingkariang potato plantlets. Results revealed significant interactions between the two growth regulators on most growth parameters. The application of 0.3 ppm NAA enhanced node number, shoot formation, and plantlet height without suppressing root growth, while 2 ppm BAP was most effective for stimulating shoot development. These findings highlight the importance of optimizing plant growth regulator combinations to improve micropropagation efficiency of Cingkariang potato.]]>
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