THE EFFECT OF THREE PRE-TREATMENTS ON BREAKING SEED DORMANCY OF BAOBAB (AdansoniadigitataL.)
Seed dormancy is the most limiting factor for some plants propagation. Dormancy allows seeds to separate from their mother plant and survive dispersal, over distance and time before growth recommences. This study was aimed to determine the effect of three pre-treatments on breaking the seed dormancy of Adansoniadigitata L., a multi-purpose and indigeneously endangered tree. The study was carried out in the greenhouse of the Department of Biological Sciences, Federal University Dutsin-Ma, Nigeria. The three pre-treatments are: soaking in hot water (100◦C) for 5, 10, 15 and 20 minutes; and soaking in sulphuric acid (H2SO4) and Hydrochloric acid (HCL) concentrations (100%, 75%, 50% and 25%) for 5, 10, 15 and 20 minutes. Untreated intact seeds have served as control. These were laid out in a Complete Randomized Design (CRD) with three replications. Data were collected on Germination Percentage (GP), Germination Rate (GR), Day of Emergence (DOE) and the Average Seedlings Height (ASH).The result showed that earliest mean days of emergence (7days) was observed in seeds subjected to hot water treatment at 15 minutes. It also showed the highest rate of germination and percentage 6(100%). On the other hand, the effect of acids (H2SO4and HCL) pre-treatments on the seeds gave a fair result (16.66 to 33.33%). Untreated seeds did not germinate at all. All the pre-treatments used in the study were found to be effective. However, soaking of seeds in hot water (100oC) pre-treatment for 15 minutes is therefore recommended for breaking the seed dormancy of A. digitata.
Amusa TO. Effects of three pre-treatment techniques on dormancy and germination of seeds of Afzelia Africana (Sm. Ex pers). J of Horticult and Forestry 2011; 3(4):96–103.
Arama E, Michaud P, Fourriac R, Rodriguez F. Unnouvel excipient en formulation pharmaceutique de comprimes de théophylline, type matricehydrophile: la pulpe de fruit du baobab (AdansoniaDigitataL.). Farmaco Ed. Pr.; 1988 43: 303-304.
Aref IM, Ali H, Atta E, Al Shahrani T, Ismail A. Effects of seed pretreatment and seed source on germination of five Acacia spp. African Jof Biotech 2011; 10(71): 15901–15910.
Ashraf M, Foolad MR. Pre-sowing seed treatment: A shot gun approach to improve germination, plant growth and crop yield under saline and non-saline conditions advances in Agronomy. Crop Sci 2005; 88:241-271.
Baskin JM, Baskin CC, Li X. Taxonomy, anatomy and evolution of physical dormancy in seeds.Plant Species Bio 2000; 15: 139-152.
Bewley JD. Seed Germination and Dormancy. Plant Cell 1997; 9(7):1055-1066.
BescoE, Braccioli E, VertuaniS, Ziosi P, Brazzo F, Bruni R, Sacchetti G, Manfredini S. The use of photochemiluminescence for the measurement of the integral antioxidant capacity of baobab products. Food Chem 2007; 102: 1352-1356.
Farahani HA, Moaveni P, Maroufi K. Effect of Thermopriming on Germination of Cowpea (VignaSinensis L.). Advances in Environ Bio 2011; 5(7): 1668-1673.
FalemaraBC, Chomini MS, Thlama DM,Udenkwere M. Pre-germination and dormancy response of Adansoniadigitata L. seeds to pre-treatment techniques and growth media. European J of Bot 2014;2(1):13–23
Gebauer J, El-Siddig K, Ebert G. Baobab (AdansoniadigitataL.): A Review on a Multipurpose Tree with PromisingFuture in the Sudan; 2002 p.155-160.
Hilhorst HWM, Groot SPC,BinoRJ.The tomato seed as a model system to
study seed development and germination, ActaBotanicaNeerlandica 2006; 47: 169-183.
SchelinM, Tigabu M, Eriksson I, Sawadogo L, Ode P. Pre-dispersal seed predation in Acacia macrostachya, its impact on seed viability, and germination responses to scarification and dry heat treatments.J of Agron and Crop Sci 2004; 7: 251–267.
Sidibe, M, WilliamsJT. Baobab – Adansoniadigitata. Fruits for the future. International Centre for Underutilized Crops, Southampton, UK; 2002p. 96.
Shukla YN, Dubey S, Jain SP, Kumar, S. Chemistry, biology and uses of Adansoniadigitata. A review. J. Med. Arom. Plant Sci2001; 23: 429-434.
Tal-Dia A, Toure K, Sarr O, Sarr M, Cisse MF, Garnier P,WoneI. A baobab solution for the prevention and treatment of acute dehydration in infantile diarrhoea. Dakar Med. 1997; 42: 68-73.
VertuaniS, Braccioli E, Buzzoni V,Manfredini S. Antioxidant capacity of Adansoniadigitatafruit pulp and leaves. ActaPhytotherapeutica 2002; 86: 2-7.
WickensGE, Lowe P. The Baobabs: Pachycauls of Africa, Madagascar and Australia, Springer 2008.
YagoubS. Antimicrobial activity of Tamarindusindicaand Adansoniadigitataextracts against E. coli isolated from urine and water specimens. Resource J of Microbiology2008; 3: 193-195.
Yang QH, Ye W, H, Yin XJ. Dormancy and germination of Areca traindraseeds. ScientiaHorticulturae2007; 113, 107-111.
This work is licensed under a Creative Commons Attribution 4.0 International License.