Results
The role of coconut water and casein hydrolysate Addition of CW to the culture medium
affected the proliferation of embryogenic callus. Results shown in table (1) indicate
that the addition of CW increased significantly the both fresh and dry weight of embryogenic callus and the number of globular embryos as well. The highest fresh and dry weights were achieved at 20% of CW (1.95 and 0.48 g respectively). The same concentration gave the highest number of globular embryos (65 embryos). Results indicated that the addition of CH increased
significantly both fresh and dry weight of embryogenic callus and the number of
globular embryos as well (Table 2). The highest fresh and dry weights were achieved at 2.0 g/L of CH (1.70 and 0.43 grespectively). The same concentration gave the highest number of globular embryos(47embryos). The subsequent germination of somatic embryos was also affected by
CW and CH added to the previous culture medium as shown in fig. 3-D. The highest percentage of embryo germination (76%) was achieved with 10% (v:v) CW while it
was only 45% in the medium lacking CW(figure 1). On the other hand, the addition
of CH also increased embryo germination percentage. The highest percentage of embryo germination (60%) was achieved with 2 g/L CH while it was only 45% in CH
free medium (fig. 3-E).