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Allelopathic Effect of Pentaclethra macrophylla Benth. Leaf Extracts on Germination and Seedling Growth of Maize and Okra

Justin Ugochukwu Ogbu, Rasheed Olufemi Awodoyin and Oluseun Sunday Olubode

Background and Objective: Pentaclethra macrophylla Benth. is an indigenous leguminous tree of southern Nigeria’s agroecosystems, whose seeds are used as spices; however, its allelopathy potential is not understood. Therefore, this study was aimed at investigating P. macrophylla allelopathic effects on germination and seedling growth of maize and okra. Materials and Methods: Allelopathic effects of Aqueous Leaf Extracts (ALE) of P. macrophylla at 0 (control), 10, 20, 40 and 80% concentrations on maize (n = 200) and okra (n = 200) seed germination and seedling growth were assessed in laboratory and screen house nursery. Total germination (%) for both crops was determined at one Week After Sowing (WAS); while Number of Leaves (NL), Plant Height(PH) (cm), Root Length (RL) (cm) and Dry Weight (DW) (g) were evaluated at 8 WAS. Experimental design used in the study was completely randomized design. Data were analyzed using descriptive statistics and ANOVA at α0.05. Results: Above 90.0% germination was recorded for maize in all the ALE concentrations, while for okra ALE-10 gave significantly highest germination (90.0±8.7%) and ALE-80 gave least (42.5±26.3%). Maize and okra seedlings given treated with Pentaclethra macrophylla Benth. leaf extract had highest NL, PH and DW; while ALE-0 (control) had least values in PH and DW, respectively. Control had highest RL in both crops. The ALE-10 gave least RL in maize and ALE-20 gave least RL in okra. Conclusion: Pentaclethra macrophylla aqueous leaf extract at 10% enhanced germination, while 40% concentration encouraged dry matter accumulation and height in maize and okra seedlings.

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Received: December 15, 2018; Accepted: March 28, 2019; Published: August 10, 2019

APG., 2009. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. Bot. J. Linn. Soc., 161: 105-121.
CrossRef  |  Direct Link  |  

Anwar, S., W.A. Shal, M. Shafi, J. Barht and M.A. Khan, 2003. Efficiency of Sorgaab (Sorghum water extract) and herbicide for weed control in wheat (Triticum aestivum L.) crop. Pak. J. Weed Sci. Res., 9: 161-170.
Direct Link  |  

Awodoyin, R.O. and O.S. Ladipo, 2001. Ladipo, 2001. Studies on some nursery management techniques for Irvingia wombulu (Syn. Exolia) ex. Okafor. Niger. J. Ecol., 3: 24-28.

Bhadoria, P.B.S., 2011. Allelopathy: A natural way towards weed management. Am. J. Exp. Agric., 1: 7-20.
Direct Link  |  

Bora, I.P., J. Singh, R. Borthakur and E. Bora, 1999. Allelopathic effect of leaf extracts of Acacia auriculiformis on seed germination of some agricultural crops. Ann. For., 7: 143-146.

Cheema, Z.A., A. Khaliq and S. Saeed, 2004. Weed control in maize (Zea mays L.) through sorghum allelopathy. J. Sustain. Agric., 23: 73-86.
CrossRef  |  Direct Link  |  

Cheema, Z.A., M. Farooq and A. Khaliq, 2012. Application of Allelopathy in Crop Production: Success Story from Pakistan In: Allelopathy Cheema, Z.A., M. Farooq and A. Wahid. (Ed.). Springer, Berlin Heidelberg, pp 113-143.

Daniya, E., H. Ibrahim and F. Abdullahi, 2014. Allelopathic potential of mint weed (Hyptis suaveolens Poit.) on germination behaviour of some okra (Abelmoschus esculentus (L.) Moench varieties. J. Applied Agric. Res., 6: 245-251.

Das, C.R., N.K. Mondal, P. Aditya, J.K. Datta, A. Banerjee and K. Das, 2012. Allelopathic potentialities of leachates of leaf litter of some selected tree species on gram seeds under laboratory conditions. Asian J. Exp. Biol. Sci., 3: 59-65.
Direct Link  |  

Diabate, M., A. Munive, S.M. De Faria, A. Ba, B. Dreyfus and A. Galiana, 2005. Occurrence of nodulation in unexplored leguminous trees native to the West African tropical rainforest and inoculation response of native species useful in reforestation. New Phytol., 166: 231-239.
CrossRef  |  Direct Link  |  

Einhellig, F.A., 1986. Mechanisms and Modes of Action of Allelochemicals. In: The Science of Allelopathy, Putnam, A.R. and C.S. Tang (Eds). Wiley and Sons, New York, pp: 171-188.

Farooq, M., M. Habib, Atique-Ur-Rehman, A. Wahid and R. Munir, 2011. Employing aqueous allelopathic extracts of sunflower in improving salinity tolerance of rice. J. Agric. Soc. Sci., 7: 75-80.

Farooq, M., S.M.A. Basra, A. Wahid, N. Ahmad and B.A. Saleem, 2009. Improving the drought tolerance in rice (Oryza sativa L.) by exogenous application of salicylic acid. J. Agron. Crop Sci., 195: 237-246.
CrossRef  |  Direct Link  |  

Fatunbi, A.O., S. Dube, M.T. Yakubu and T. Tshabalala, 2009. Allelopathic potential of Acacia mearnsii De wild. World Applied Sci. J., 7: 1488-1493.

Iqbal, J., Z.A. Cheema and M. An, 2007. Intercropping of field crops in cotton for the management of purple nutsedge (Cyperus rotundus L.). Plant Soil, 300: 163-171.
CrossRef  |  Direct Link  |  

Isu, N.R. and C.O. Ofuya, 2000. Improvement of the traditional processing and fermentation of African oil bean (Pentaclethra macrophylla Bentham) into a food snack-'ugba'. Int. J. Food Microbiol., 59: 235-239.
CrossRef  |  Direct Link  |  

Jabran, K. and M. Farooq, 2012. Implication of Potential Allelopathic Crops in Agricultural Systems. In: Allelopathy Current Trends and Future Applications, Cheema, Z.A., M. Farooq and A. Wahid (Eds.)., Springer Verlag, Berlin, Heidelberg, pp: 349-385.

Jadhav, B.B. and D.G. Gaynar, 1995. Effect of Casuarina equisetifolia JR leaf litter leachates on germination and seedling growth of rice and cowpea. Allelopathy J., 2: 105-108.
Direct Link  |  

Jamil, M., Z.A. Cheema, M.N. Mushtaq, M. Farooq and M.A. Cheema, 2009. Alternative control of wild oat and canary grass in wheat fields by allelopathic plant water extracts. Agron. Sustain. Dev., 29: 475-482.
CrossRef  |  Direct Link  |  

Keay, R.W.J., 1989. Trees of Nigeria. Oxford Science Publication, New York, ISBN: 0-19-854560-6, Pages: 476.

Kruse, M., M. Strandberg and B. Strandberg, 2000. Ecological effects of Allepathic plants: A review. Technical report No. 315. National Environmental Research Institute, Silkeborg, pp: 1-66.

May, E.F. and J.E. Ash, 1990. An assessment of the allelopathic potential of Eucalyptus. Aust. J. Bot., 38: 245-254.
CrossRef  |  Direct Link  |  

Narwal, S.S., 1994. Allelopathy in Crop Production. Scientific Publisher, Jodhpur, India, Pages: 288.

Ngonadi, E., 2012. Evaluation of allelopathic potential of six weed species on seed germination attributes of Okra (Abelmoschus esculentus [L.] Monench.), Maize (Zea mays L.) and Cowpea (Vigna unguiculata [L.] Walp). M.Sc. Thesis, Department of Crop Protection and Environmental Biology, University of Ibadan, Ibadan, Nigeria.

Oboh, G. and M.M. Ekperigin, 2004. Nutritional evaluation of some Nigerian wild seeds. Nahrung Food, 48: 85-87.
CrossRef  |  Direct Link  |  

Okeke E.C., H.N. Ene-obong, A.O. Uzuegbunam,A. Ozioko, S.I. Umeh and N. Chukwuone, 2009. The Igbo Traditional Food System Documented in Four States in Southern Nigeria. In: Indigenous People Food Systems, Kulnlein, H., B. Erasmus and D. Spigelski (Eds.)., FAO and Centre for Indigenous People's Nutrition and Environment, Rome, Italy, pp: 251-281.

Onyeike, E.N. and G.N. Acheru, 2002. Chemical composition of selected Nigerian oil seeds and physicochemical properties of the oil extracts. Food Chem., 77: 431-437.
CrossRef  |  Direct Link  |  

Owoseni, O. and R.O. Awodoyin, 2013. Allelopathic effect of aqueous shoot and root extracts of Alternanthera brasiliana (L.) O. Kuntze on the germination and seedling growth of Amaranthus cruentus L. and Zea mays L. Ibadan J. Agric. Res., 9: 257-264.

Siddiqui, S., S. Bhardwaj, S.S. Khan and M.K. Meghvanshi, 2009. Allelopathic effect of different concentration of water extract of prosopsis Juliflora leaf on seed germination and radicle length of wheat (Triticum aestivum var-lok-1). Am. Eurasian J. Sci. Res., 4: 81-84.
Direct Link  |  

Sprent, J., 2005. West African legumes: The role of nodulation and nitrogen fixation. New Phytol., 167: 326-330.
CrossRef  |  Direct Link  |  

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