Explant growth and shoot multiplication of Spathiphyllum and Syngonium were compared on agar-solidified medium and interfacial membrane rafts floating on liquid medium. After 25 d of culture, greater shoot multiplication and fresh mass gain were achieved by plant material grown on rafts. Shoot multiplication of Spathiphyllum and Syngonium on membrane rafts reached a maximum at 25 d, whereas the fresh mass increased throughout the culture period (40 d). The number of shoots of Spathiphyllum and Syngonium material grown on membrane rafts remained constant between 25 and 40 d of culture. The plants grown on membrane rafts also developed more roots.
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