Effects of lighting cycle on daily CO2 exchange and dry weight increase of potato plantlets cultured in vitro photoautotrophically

摘要

Leafy single node cuttings of potatoes cv. Benimaru were cultured in vitro photoautotrophically under 4 light cycle treatments (16 h light/8 h dark, 4 h light/2 h dark, 1 h light/0.5 h dark or 0.25 h light/0.125 h dark). The daily CO2 exchange per plantlet and dry weight increase were greater in the shorter photoperiod treatments.