Allelopathic Effects of Aqueous Extracts of Mucuna Pruriens (L.) DC (Velvet Bean) on Seed Germination and Plant Growth of Amaranthus Cruentus L. in Ibadan, Nigeria

Year 2025, Volume: 9 Issue: 1, 24 - 31, 30.06.2025

Ayobami Adeniji , Rasheed Olufemi Awodoyini Oluseun Sunday Olubode Julius Romiluyi Orimoloye

Abstract

Allelopathy is useful in facets of plant ecology such as occurrence, dominance, diversity and plant productivity. Mucuna pruriens is characterised as one of the strongest allelopathic plants Therefore, the effects of aqueous extracts of M. puriens extract on seed germination and plant growth of Amaranthus cruentus L. were investigated in Ibadan, Nigeria. Aqueous Shoot Extract-ASE and Aqueous Root Extract-ARE of 8-week-old Mucuna pruriens at 0, 25, 50, 75 and 100% concentrations were applied to Amaranthus cruentus seeds (n=50) in Petri dishes and Germination Percentage (GP) was determined at day seven. Also, the treatments were applied to Amaranthus cruentus plants in pots, and Plant Height (PH; cm) and Leaf Area (LA; cm2) were determined at six Weeks After Sowing. All experiments were arranged in completely randomized design (r=3). Data were analysed using ANOVA at α0.05. The GP of Amaranthus cruentus seeds ranged from 13.3±1.67% (100ASE) to 31.7±1.67% (25ASE), and from 13.3±3.33% (100ARE) to 28.3±1.67% (50ARE), which were significantly lower than control (68.3±1.67%). The A. cruentus plants treated with 100ASE and 100ARE had PH of 30.93±1.32 cm and 30.46±0.70 cm respectively, and LA of 48.07±0.67 cm2 and 50.48±3.08 cm2 respectively, which were significantly higher than control (PH2-2.20±2.05 cm and LA-38.54±1.62 cm2). Aqueous extracts of Mucuna pruriens inhibited seed germination but stimulated the growth of Amaranthus cruentus plants

Keywords

Weed management , Inhibition , Stimulation , Legume , Velvet bean , Extracts

References

• Abbas T., Nadeem M. A., Tanveer A., Ali H.H. & Farooq N. 2017. Role of allelopathic crop mulches and reduced doses of tank-mixed herbicides in managing herbicide-resistant Phalaris minor in wheat. Crop Protection, 110, 245- 250.
• Adler M.J. & Chase C.A. 2007. Comparison of the Allelopathic Potential of Leguminous Summer Potential Crops: Cowpea, Sunn Hemp and Velvet Bean, Hort Science, 42(2), 289-293.
• Awe O.A. & Osunlola O.S. 2013. Influence of Induced Growth Patterns on Grain Yield Components of Amaranthus cruentus L., Indian Journal of Science and Technology, 6(11), 5523-5645.
• Awodoyin R.O. & Akande S.A. 2014. Allelopathic Effect of Aqueous Extracts from Cobblers Pegs (Bidens pilosa L.) On Germination and Early Seedling Growth of Maize (Zea mays L.), Ibadan Journal of Agricultural Research, 10(2), 147-156.
• Cheng F. & Cheng Z. 2015. Research Progress on The Use of Plant Allelopathy in Agriculture and The Physiological and Ecological Mechanisms of Allelopathy, Frontiers in Plant Science, 6, 1020
• Cruz-Silva C.T.A., Nóbrega L.H.P., Dellagostin S.M. & Silva C.F.G. 2016. Salvia officinalis L. Coverage on Plants Development, Revista Brasileira de Plantas Medicinais, 18, 488-493.
• Galon L., Rossetto E.R., Enderle A.C., Brandler D., Favretto E.L., Dill J.M., Forte C.T. & Muller C. 2021. Allelopathic Potential of Winter and Summer Cover Crops on the Germination and Seedling Growth of Solanum americanum, International Journal of Pest Management, 69(3), 232-240.
• Ibrahim J.A., Omar D. & Magani E. 2018. Evaluation of Allelopathic Potential of Velvet Bean (Mucuna cochinchinensis) on Germination of Goosegrass (Eleusine indica L), International Journal of Innovative Approaches in Agricultural Research, 2(1), 25-34.
• Kolawole E.L. & Sarah O.A. 2009. Growth and Yield Performance of Amaranthus cruentus Influenced by Planting Density and Poultry Manure Application, Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 37(2), 195 -199.
• Khanh T.D., Chung M.I., Xuan T.D. & Tawata S. 2005. The Exploitation of Crop Allelopathy in Sustainable Agricultural Production, Journal of Agronomy and Crop Science, 191, 172-184.
• Lucia R.L., Alessio C., Roberto G., Claudia S. & Giuseppe V. 2011. The Magic Velvet Bean of Mucuna pruriens, Journal of Traditional and Complementary Medicine, 2 (4), 331-339.
• Nekonam M.S., Razmjoo J., Sharifnabi B. & Karimmojeni H. 2013. Assessment of Allelopathic Plants for their Potential Against Field Bindweed (Convolvulus arvensis), Australian Journal of Crop Science, 7(11), 1654-1660.
• Ochekwu E.B. & Udensi E.U. 2015. Evaluation of Potential Allelopathic Relationship Between Velvet Bean (Mucuna cochinchinensis (Lour.) A. Chev) and Spear Grass (Imperata cylindrical (L.) Raeushel) with Selected Method, Journal of Agriculture and Ecology Research International, 3(3), 89-96
• Ojo O.D., Connughton M., Kintomo A.A., Taiwo L.O. & Afolayan S.O. 2011. Assessment of Irrigation System in Dry Season Vegetable Production in Urban and Peri-Urban Zones of Ibadan and Lagos, South-Western Nigeria, African Journal of Agricultural Research, 6(2), 236-243.
• Ortiz-Ceballos A.I., Aguirre-Rivera J.R., Osorio-Arce M.M & Peña-Valdivia C. 2012. Velvet bean (Mucuna pruriens var. utilis) a Cover Crop as Bio-herbicide to Preserve the Environmental Services of Soil. Herbicides-Environmental Impact Studies and Management Approaches. Ed. Alvarez- Fernandez R University of Cambridge, Cambridge, pp. 167-184.
• Owoseni O. & Awodoyin R.O. 2013. Allelopathic Effect of Aqueous Shoot and Root Extracts of Alternanthera brasiliana (L.) Kuntze on Germination and Seedling Growth of Amaranthus cruentus L. and Zea mays, Ibadan Journal of Agricultural Research, 9, 257-264.
• Rugare J.T., Pieterse P.J. & Mabasa S. 2020. Evaluation of the Potential of Jack Bean [Canavalia ensiformis (L.) DC.] and Velvet Bean [Mucuna pruriens (L.) DC.] Aqueous Extracts as Post-Emergence Bio-Herbicides for Weed Control in Maize (Zea mays L.), Asian Journal of Agriculture and Rural Development, 10(1), 420-439.
• Runzika M., Rugare J.T. & Mabasa S. 2013. Screening Green Manure Cover Crops for Their Allelopathic Effects on Some Important Weeds Found in Zimbabwe, Asian Journal of Agriculture and Rural Development, 3(8), 554-565.
• Shu'aib A.U., Mohammed A.B., Abdullahi S.A. & Yakasai M.T. 2017. Profitability Analysis of Vegetable Amaranth (Amaranthus cruentus) Production Along Metropolitan Jakara River in Kano, Nigeria, Nigerian Journal of Agricultural Economics, 7(1), 54- 63.
• Travlos I., Roussis I., Roditis C., Semini C., Rouvali L., Stasinopoulou P. & Bilalis D. 2018. Allelopathic Potential of Velvet Bean Against Rigid Ryegrass, Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 46(1), 173-176.
• Xuan T.D. & Tsuzuki E. 2004: Allelopathic Plants: Buckwheat. Allelopathy Journal, 13(2), 137-148.