Results 191 to 200 of about 37,823 (222)

Detection of phytophthora palmivora in cocoa fruit with deep learning

Iberian Conference on Information Systems and Technologies, 2021
Currently there are many supervised learning methods and evaluation models for the detection of diseases in plants, this initial study presents a model for the detection of phytophthora palmivora on the cocoa pod, which has been developed with the ...
Rannoverng Yanac Montesino, J. Rosales-Huamaní, J. Castillo-Sequera   +2 more
semanticscholar   +1 more source

Inoculum prevalence, virulence, and morphometric variation of Phytophthora palmivora recovered from soil across cocoa plantations in East Luwu, Indonesia

Biodiversitas Journal of Biological Diversity
. Brugman E, Hardina N, Kuswinanti T. 2024. Inoculum prevalence, virulence, and morphometric variation of Phytophthora palmivora recovered from soil across cocoa plantations in East Luwu, Indonesia. Biodiversitas 25: 4095-4104.
Eirene Brugman, N. Hardina, Tutik Kuswinanti   +2 more
semanticscholar   +1 more source

Jackfruit decline caused by Phytophthora palmivora (Butler)

Australasian Plant Pathology, 2013
In the late 1990’s a decline syndrome emerged in jackfruit orchards in the Eastern Visayas region of the Philippines. Symptoms included trunk cankers, wilting and dieback of the canopy and, in many cases, tree death. The decline resulted in significant yield losses for farmers.
Borines, L. M., Palermo, V. G., Guadalquiver, G. A., Dwyer, C., Drenth, A., Daniel, R., Guest, D. I.   +6 more
openaire   +2 more sources

Chromosome size differences in Phytophthora palmivora, a pathogen of cocoa

Nature, 1975
Phytophthora palmivora is one of the most ubiquitous and destructive plant pathogens of tropical tree crops such as palms, cocoa, citrus and rubber1. On cocoa, where it causes black-pod disease, annual losses are conservatively estimated at 10% of the crop2.
E, Sansome, C M, Brasier, M J, Griffin
openaire   +2 more sources

Phytophthora palmivora from Piper betle in Sarawak

Transactions of the British Mycological Society, 1969
The symptoms of foot rot of Piper betle L. are described and details given of the isolation, pathogenicity, morphology, and growth of the causal organism. The findings are compared with those from P. betle in India and Malaya, and P. nigrum L. in Indonesia and Sarawak.
openaire   +1 more source

Cocoa canker caused by Phytophthora palmivora

Annals of Applied Biology, 1970
SUMMARYCanker disease of Theobroma cacao L. caused by Phytophthora palmivora (Butler) Butler gives rise to serious damage in Fiji and is common in the S.W. Pacific area. Fusarium decemcellulareBiick (imperfect stage of Calonectria rigidiuscula (Berk. & Br.) Sacc.) was constantly associated with P.
I. D. FIRMAN, A. J. VERNON
openaire   +1 more source

Elemental variations in the germinating fungus Phytophthora palmivora

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1991
Abstract We have measured the elemental variations between zoospores and germinating cystospores of the fungus Phytophthora palmivora , using a scanning proton microprobe. Averaged over a number of individual cells, our results indicate that the level of Ca is much lower in germinating cystospores than in zoospores.
A.P. Mazzolini, B.R. Grant, R.M. Sealock, G.J.F. Legge   +3 more
openaire   +1 more source

Growth and ultrastructural differentiation of sporangia in Phytophthora palmivora

Canadian Journal of Microbiology, 1972
Development of sporangia in Phytophthora palmivora Butler consists of two main stages. The first involves expansion of the sporangial initial to about the size of the mature sporangium, whereas the second is characterized by the differentiation of the expanded vesicle to the mature sporangium.
J, Christen, H R, Hohl
openaire   +2 more sources

Accelerated ion fluxes during differentiation in zoospores of Phytophthora palmivora

Cell Differentiation and Development, 1989
Zoospores of Phytophthora palmivora show increased fluxes of Na+ and Ca2+ 3-5 min after they have been stimulated to differentiate with pectin. Both spontaneous and pectin-induced encystment are reduced below pH 6 and accelerated above pH 7. The ionophores monensin and A23187 induce slow differentiation when added together, but not when added ...
J R, Iser, J M, Griffith, A, Balson, B R, Grant   +3 more
openaire   +2 more sources

The elicitin secreted by Phytophthora palmivora, a rubber tree pathogen

Phytochemistry, 2000
Palmivorein, a new member of the elicitin family, was purified from the culture filtrate of Phytophthora palmivora isolated from the rubber tree, Hevea brasiliensis. The elicitin was obtained by ammonium sulfate precipitation and further purified using ion-exchange and gel filtration.
N, Churngchow, M, Rattarasarn
openaire   +2 more sources