Variation in Phytophthora palmivora

Further evidence has been found of differences in morphology and in pathogenicity of various isolates of Phytophthora palmivora from different parts of the world. Cultural differences are very pronounced between some isolates, particularly between isolates from cacao and rubber; isolates from cacao vary considerably depending on the geographical location. Using the stem inoculation method on cacao seedlings, variations in pathogenicity of different isolates of P. palmivora are obvious. Highly virulent isolates on most cacao clones tested include cultures from cacao in Costa Rica, Dominican Republic, Ghana, Trinidad, and an A2 type from Brazil; isolates usually low in virulence include cultures from Ceylon, Mexico (A1), and Brazil (A1). A Costa Rican isolate from rubber was very low in pathogenicity to cacao, as was an isolate from papaya in Australia

Bibliographic Details

Main Authors:	Jones, Earl 81495, 107834 Quesnel, V.C., 56331 Chalmers, W.S., 68473 Fordham, R., 80036 Iton, E.F. eds., 133328 Zentmyer, G.A., 97646 Murray, D.B., 5330 Cocoa Research Institute, St. Augustine (Trinidad y Tobago), 4. International Cocoa Research Conference St. Augustine (Trinidad y Tobago) 8-18 Ene 1972
Format:	biblioteca
Published:	St. Augustine (Trinidad y Tobago) 1972
Subjects:	THEOBROMA CACAO, PHYTOPHTHORA PALMIVORA, PODREDUMBRES, ENFERMEDADES FUNGOSAS, AISLAMIENTOS, INOCULACION, TALLO, PODER PATOGENO, COSTA RICA, REPUBLICA DOMINICANA, GHANA, TRINIDAD Y TOBAGO, BRASIL, MEXICO, SRI LANKA,
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