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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/6745

Title: Full Length Research Paper - Bioassay of Geniculosporium species for Phytophthora megakarya biological control on cacao pod husk pieces
Authors: Tondje, P. R.
Hebbar, K. P.
Samuels, G.
Bowers, J. H.
Weise, S.
Nyemb, E.
Begoude, D.
Foko, J.
Fontem, D.
Keywords: Cacao, biological control, Geniculosporium sp, endophytes, Phytophthora megakarya, pod husks pieces.
Issue Date: 31-Dec-2006
Publisher: Academic Journals
Citation: African Journal of Biotechnology (ISSN: 1684-5315) Vol 5 Num 8
Abstract: Fungal endophytes (Geniculosporium sp.) isolated from cacao leaves were screened for biological control of Phytophthora megakarya the cacao black pod disease pathogen, using Cacao Pod Husk Pieces (CPHP). CPHP were pre-treated with spore suspensions of Geniculosporium sp. [BC13 (GJS 01196), BC108 (GJS 01-192), BC118 (GJS 01-197), BC177 (GJS 01-198)], and were infected with P. megakarya zoospore suspensions (105 zoospores/ml). Effects on P. megakarya were noticed at pod infection, mycelia growth inside infected tissues, and fungal sporulation, that are major stages of the black pod disease cycle on cacao pods. CPHP pre-treated with BC108 expressed the lowest early Infection Index (EII), but could not control disease progress into infected cacao pod husk tissues. On CPHP pre-treated with BC13, average growth rate of the necrosis was significantly reduced, but no control on P. megakarya sporulation was observed, while CPHP pre-treated with BC177 significantly reduced P. megakarya sporulation.
URI: http://hdl.handle.net/1807/6745
Other Identifiers: http://www.bioline.org.br/abstract?id=jb06115
Rights: Copyright 2006 - Academic Journals
Appears in Collections:Bioline International Legacy Collection

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