Résumé
An efficient regeneration protocol was developed from shoot tip and nodal explants of Simarouba glauca DC, a promising biodiesel plant. Nodal explants appeared to have better regeneration capacity than shoot tip explants (40%) in the tested media. The highest regeneration frequency (90%) and shoot number (7.00 ± 1.00 shoots per explants) were obtained in nodal explants in Murashige and Skoog’s (MS) medium supplemented with 6-benzylaminopurine (BAP) 4.43 μM and α-naphthalene acetic acid (NAA) 5.36 μM.Induced shoot buds were multiplied and elongated on the MS medium supplemented with BAP (4.44 μM), NAA (5.36 μM) and TDZ (Thidiazuron) 2.27 μM with 9.66±0.33 (mean length 5.35±0.32 cm) and 9.00±0.57 (mean length 4.51±0.15cm) shoots using nodal segments and shoot tip explants, respectively. Halfstrength woody plant medium (WPM) containing 2.46μM indole-3-butyric acid (IBA) produced the maximum number of roots (6.00±1.15). The rooted plantlets were hardened on MS basal liquid medium and subsequently in polycups containing sterile soil and vermiculite (1:1) and successfully established in pots.
Résumé
An attempt was made to standardize the protocol for the shoot regeneration via caulogenesis in Pteris vittata L. employing leaf primordium explants. Calli were induced on Murashige and Skoog’s (MS) and Parkers and Thompson’s (P and T) media supplemented with different combinations of 2, 4-dichlorophenoxyaceticacid (2, 4-D), 6-benzylaminopurine (BAP), a-naphthalene acetic acid (NAA) and Indole - 3-acetic acid (IAA). A combination of full strength MS medium with 2, 4-D (2.26 µM) and BAP (2.22 µM) was found to be ideal for profuse callusing (80%) against other combinations. More shoot differentiation (2.8±0.06) was achieved from the calli on one-fourth strength of P and T media fortified with BAP (4.44 µM) and NAA (2.68 µM) when compared to other combinations but statistically not significant.