1. Tayo, P.M.T., C.A. Ewane, P.O. Effa and T. Boudjeko, 2017. Effects of chitosan and snail shell powder on cocoa (Theobroma cacao L.) growth and resistance against black pod disease caused by Phytophthora megakarya. Afr. J. Plant Sci., 11: 331-340.
   CrossRef  |  Direct Link  |  
2. Onomo, P.E., J.M. Ndjaga, M.L. Ondobo, J.C.D. Kouam and P.F. Djocgoue, 2017. Virulence test of some Phytophthora megakarya isolates on cocoa (Theobroma cacao L.) hybrid pods. IOSR J. Biotechnol. Biochem., 3: 73-81.
3. Ondobo, M.L., P.O. Effa, J.N. Manga, J.C.K. Djoko and P.F. Djocgoue, 2017. Breeding of parental and tolerant hybrids of Theobroma cacao L. to Phytophthora megakarya Bras. and Griff. Int. J. Plant Physiol. Biochem., 9: 9-21.
4. Ondobo, M.L., P.E. Onomo, J.M. Ndjaga, J.C.D. Kouam, P.F. Djocgoue and D.O. Ndoumou, 2017. Estimation of necrosis length, phenolic content, peroxidase and polyphenoloxidase activity in cocoa plants (Theobroma cacao L.) after Phytophthora megakarya inoculation. Int. J. Agron. Agric. Res., 10: 26-36.
5. Onomo, P.E., S.P. Akoa, M.L. Ondobo and P.F. Djocgoue, 2016. Assessment of tolerance level to Phytophthora megakarya in four hybrid populations of Theobroma cacao L. Int. J. Biosci., 9: 53-64.
6. Onomo, P.E., M.R. Fabiola, A.M. Bih, M.L. Ondobo and K. Germain, 2016. Heterosis and heritability of chemical quality of butter derived from some cocoa (Theobroma cacao L.) clones. Int. J. Sci., 5: 57-64.
7. Jude, M.N., E.O. Pierre, O.M. Louise, D.K.J. Christian and D.P. Francois, 2016. Heritability of the tolerance to Phytophthora megakarya Bras. and Grif. of Theobroma cacao L. in terms of their necrosis length, phenolic contents and activity of enzymes. Int. J. Biosci., 8: 249-261.
8. Effa, P.O., M.L. Ondobo, P.F. Djocgoue and N. Niemenak, 2016. Heterosis and heritability estimates of purine alkaloids and polyphenols in cocoa. Afr. Crop Sci. J., 24: 235-246.
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9. Onomo, P.E., N. Niemenak, P.F. Djocgoue, M.L. Ondobo and D.O. Ndoumou, 2015. Heritability of polyphenols, anthocyanins and antioxidant capacity of Cameroonian cocoa (Theobroma cacao L.) beans. Afr. J. Biotechnol., 14: 2672-2682.
   CrossRef  |  Direct Link  |  
10. Simo, C., P.F. Djocgoue, H.D. Mbouobda, P.O. Effa, T. Boudjeko, Z. Ndiang and D.N. Omokolo, 2014. Assessing relationship between phenolic compounds and resistance t Phytophthora megakarya using two cocoa (Theobroma cacao) families. Afr. J. Biotechnol., 13: 2956-2965.
    Direct Link  |  
11. Ondobo, M.L., P.E. Onomo, P.F. Djocgoue, J.M. Ndjaga, T. Boudjeko and D.O. Ndoumou, 2014. Phenolic content and heritability of resistance in four hybrid populations of Theobroma cacao L. after leaves inoculation with Phytophthora megakarya Bras. et Grif. Int. J. Biol. Chem. Sci., 8: 17-30.
    Direct Link  |  
12. Niemenak, N., J.E. Eyamo, P.E. Onomo and E. Youmbi, 2014. Physical and chemical assessment quality of cocoa beans in south and central regions of Cameroon. Syllabus Rev., 5: 27-33.
13. Ondobo, M.L., P.E. Onomo, P.F. Djocgoue, T. Boudjeko, J.M. Ndjaga, J.C.D. Kouam and D.O. Ndoumou, 2013. Influence of Phytophthora megakarya Inoculation on necrosis length, phenolic content, peroxidase and polyphenoloxidase activity in cocoa (Theobroma cacao L.) plants. Syllabus Rev., 4: 8-18.
14. Simo, C., P.F. Djocgoue, H.D. Mbouobda, P.O. Effa, T. Boudjeko and D.N. Omokolo, 2011. Variation and heritability of polyphenoloxidasic activities in two hybrid families of Theobroma cacao L. after cocoa pods inoculation with Phytophtora megakarya Bras. et Grif. Plant Pathol. J., 10: 89-98.
15. Djocgoue, P.F., H.D. Mbouobda, T. Boudjeko, P.O. Effa and D.N. Omokolo, 2011. Amino acids, carbohydrates and heritability of resistance in Theobroma cacao/Phythophthora megakarya interaction. Phytopathol. Mediterr., 50: 370-383.
    CrossRef  |  Direct Link  |  
16. Onomo, P.E., N. Niemenak, D.O. Ndoumou and R. Lieberei, 2010. Change in amino acids content during germination and seedling growth of Cola sp. Afr. J. Biotechnol., 9: 5632-5642.
    Direct Link  |  
17. Effa, O.P., N. Niemenak and N.D. Omokolo, 2009. Morphotypic and chemotypic variabilities of C. anomala (Schott and Endlicher) germplasm in Cameroon. Cameroon J. Biol. Biochem. Sci., 17: 1-8.
18. Niemenak, N., P.O. Effa, Fotso, R. Lieberei and D.N. Omokolo, 2008. Purine alkaloids and phenolic compounds in three species of Cola sp. and Garcinia kola grown in Cameroon. S. Afr. J. Bot., 74: 629-638.
19. Onomo, P.E., N. Niemenak and D.O. Ndoumou, 2006. Isoenzyme variability of three cola (Cola acuminata (Pal. de Beauv, Schott and Endlicher), Cola nitida ((Vent) Schott and Endlicher) and Cola anomala (Schott and Endlicher)) Germplasm in Cameroon. Pak. J. Biol. Sci., 9: 391-397.
    CrossRef  |  Direct Link  |  
20. Effa, O.P., N. Niemenak and N.D. Omokolo, 2006. Morphological variability of Cola acuminata ((Pal. De Beauv) Schott and Endl.) Germplasm in Cameroon. Pak. J. Biol. Sci., 9: 398-403.
    CrossRef  |  Direct Link  |  
21. Effa, O.P., N. Niemenak, T. Boudjeko and N.D. Omokolo, 2005. Changes in chemical composition, peroxidase and polyphenoloxidase activities during development and fermentation of Cameroonians Cola fruits. Cameroon J. Biol. Biochem. Sci., 13: 44-56.