Fig. 2.

Comparison of fresh weight after 70 days for different yam varieties and culture media. Effect of different in vitro culture media compositions and the presence and absence of activated charcoal supplement in the media (A) on fresh weight development of seven yam accessions (var) grown as in vitro culture for 70 days. Comparison of fresh weight development between individual D. alata (TDa) and D. rotundata (TDr) accessions (B) grown as yam in vitro culture. The fresh weight data (g) are expressed as mean ± SE. M1 and M2 denote different in vitro culture media compositions described in Table 1.