Fig. (3) Pictures taken by the end of the experiment of protocorms that did not produce
any shoot. (A) White and brown protocorms of G. hybrid that were exposed
to instrumental music for 6 months and did not show any sign of shoot formation.
(B, C) Brown protocorms of G. stapeliiflorum that were exposed to Hip Hop
and Yassin music for 6 months, with no shoots being observed. (D) White
protocorms of G. stapeliiflorum that were untreated (control group), with
no shoots being observed.