Afectaciones provocadas por Bocchoropsis pharaxalis Druce en 236 accesiones de Theobroma cacao Lin. en Baracoa1
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Abstract
The work was developed in the Germplasm Bench of the Estación Experimental Agro-Forestal Baracoa, Guantánamo province between January of 1997 to December of 2015, with the objective of determining the affectations of Bocchoropsis pharaxalis Druce in 236 accessions of Theobroma cacao Lin. with 14-29 years old planted at 3 m x 3 m of distance, in a Fluvisol soil, under Gliricidia sepium Jack former Kunth Walp shade. Five plants of each accession were marked; in each one of them every fifteen days 10 buds were evaluated. The infestation index was calculated. A totally randomized design was used. A variance analysis of single classification was carried out. The index of average infestation of the insect in-bud of the 236 evaluated accessions was the 15.33 %. The minor affectations in buds were accomplished by the insect in the EICB-207 (0.43 %); Genetic Forastero Group (9.20 %); The pea-green buds (9.89 %) and the combination Genetic Trinitarian Group with buds green-colored half (6,40 %); While biggest were determined in buds of EICB-357 (36.17 %), EICB-175 (36.40 %) and EICB-290 (36.68 %); Genetic Criollo Group (20.68 %); The red half buds (16.13 %) and the combination Genetic Criollo Group with red-colored half buds (21.23 %). The infestation indexes higher (on top of 12 %) were coincided in the months of May, October and November
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