Protocorms at Stage 4
(appearance of shoot apex) were found only on P668 and modified
Knudson C media after 2 weeks of culture (Table 2; Fig. 2C). In
general, increasing either the concentration of sodium hypochlorite
or the treatment duration caused a significant increase in the
percentage of protocorms during advanced Stages of development
on P668 and modified Knudson C media after 4 and 8 weeks of
culture (Tables 3 and 4).