Responses of IBA on rooting, biomass production and survival of branch cuttings of Santalum album L., a wild threatened tropical medicinal tree species

Abstract

Clonal propagation is important for the conservation of native, wild and threatening tree species. The study investigates the opportunities of rooting of branch cuttings of Santalum album treated with 0, 0.4, 0.6 and 0.8% indole-3butyric acid (IBA) in a non-mist propagator. A total of four hundreds eighty cuttings were used to assess the rooting ability of this species. The study revealed significant differences (p<0.05) of rooting percent, average root number per cutting and average root length among the treatments. Rooting success varied 1.32-fold (70-92.6%), 3.8-fold (5-19) and 3.1-fold (3.1-9.6 cm) in rooting percentage, average root number per cutting and average root length respectively among the treatments. The maximum and minimum rooting success were observed in T3 and T0 in all cases except in root number per cutting. In this case T2 performed better than others. The result exposed significant differences (p<0.05) of sprouting percent (1.32-fold: 62.3-83.3%) among the treatments but no significant difference (p>0.05) of number of sprouts per cutting (2.5-fold: 2-5) and number of leaves per cutting (1.7-fold: 10-17). Maximum and minimum sprouting percent was showed similar fashion of rooting percent. The results also exposed significant differences (p<0.05) of biomass production in adventitious roots and shoots among the treatments. Biomass production was significantly (p<0.01) higher in adventitious shoots than those of roots. The overall survival of rooted cutting was higher in control (90.56%) than others but showed no significant differences (p>0.05) among the treatments. It can be recommended not to use IBA for rooting of branch cuttings of S. album.

Biochemical and Physiological Changes during Early Adventitious Root Formation in Chrysanthemum indicum Linné Cuttings

“…Higher IBA concentrations decreased the rooting percentage in Syzygium cumini [ 65 ]. Another report observed a very high rooting system in Santalum album [ 66 ], Gmelina arborea [ 67 ], and Syzygium malaccense [ 68 ] with and without IBA, indicating that IBA’s influence on root formation during cutting is species-specific and that different plant species require diverse IBA concentrations to induce higher root percentages. The increase in the number of roots per cutting due to IBA treatment found in this study corroborates previous findings [ 69 ].…”

Vegetative propagation of Combretum collinum Fresen. (Combretaceae), Combretum molle R. Br. ex G. Don (Combretaceae) and Piliostigma thonningii Schumach. (Fabaceae) by cuttings: Effects of rooting media and indole-3-butyric acid concentration

“…Earlier studies on other species have shown that cuttings from soft wood or juvenile branches are more successful than those from older plant tissue (Azad et al, 2016). The experiment was carried out under non-mist propagation tunnels (Junior et al, 2016;Qadri et al, 2018).The tunnel was made of 4m wide and a 4m long wooden box constructed from round wood measuring 60cm wide by 4cm thick.…”

Phytochemical Profiling, and Antifungal Potentials of Stem-Bark Extracts of East African (Khaya Anthotheca)

“…Khaya anthotheca, commonly known as East African Mahogany, is a large evergreen tree species native to tropical Africa (Mariano, 2018). Khaya anthotheca is fast growing and grows up to 60 m in height (30 m in gardens) (Azad et al, 2016). The leaves are spirally arranged, alternate, with 3-7 leaflets and darkglossy green in color.…”