Inhibitory capacity of filtrates from trichoderma inhamatum and caiophora andina over phytopathogens of theobroma cacao
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Rev. Bol. Quim
Abstract
Spanish title: Capacidad inhibitoria de filtrados de Trichoderma inhamatum y Caiophora andina sobre fitopatógenos de Theobroma cacao. Se trabajó con extractos de filtrados de cultivos de Trichoderma inhamatum y extractos hidro-etanólicos de Caiophora andina sobre cepas patógenas de cacao Theobroma cacao. Los porcentajes de inhibición obtenidos luego de la determinación del crecimiento hifal in vitro bajo el efecto del filtrado fúngico de cepa Trichoderma inhamatum Bol 12-QD fueron: para Moniliophthora spp. 11 % (en el día 4), para Colletotrichum spp. 20 % (día 11) y para Phytophthora spp., 46 % (día 9). Mientras que, los porcentajes de inhibición del crecimiento bajo el efecto de los extractos hidroetanólicos vegetales, extracto 1 (tallo-hojas) y extracto 2 (flores) fueron: para el patógeno Moniliophthora spp. 36% y 27 % respectivamente (a los 4 días), para Colletotrichum spp. 20 y 24 % respectivamente (a los 7 días) y finalmente para Phytophthora spp. 31% y 38 % respectivamente (ambos al día 9). Por ende, se propone ambos filtrados para el control de hongos fitopatógenos en Theobroma cacao.
The filtrates of cultures of Trichoderma inhamatum and hydroethanolic extracts of Caiphora andina were assayed in vitro over pathogen strains of Theobroma cacao (cacao). The inhibition percentage after determination of the hifal growing in vitro were: for Trichoderma inhamatum Bol 12-QD, 11% in Moniliophthora spp (fourth day); 20% in Colletotrichum spp. (eleventh day); 46% in Phytophthora spp. (ninth day). The inhibition percentage for hydroethanolic extracts of Caiophora andina were: for the stem-leaves extract, 36% in Moniliophthora spp. (fourth day), for the flowers extract, 27% in Moniliophthora spp. (fourth day), for the stem-leaves extract, 20% in Colletotrichum spp. (seventh day), for the flowers extract, 24% in Colletotrichum spp (seventh day), for the stem-leaves extract, 31% in Phytophthora spp. (ninth day), for the flowers extract, 38% in Phytophthora spp. (ninth day). These results indicate that these filtrates are appropriate for the control of growing of phytopathogen fungi in Theobroma cacao.
The filtrates of cultures of Trichoderma inhamatum and hydroethanolic extracts of Caiphora andina were assayed in vitro over pathogen strains of Theobroma cacao (cacao). The inhibition percentage after determination of the hifal growing in vitro were: for Trichoderma inhamatum Bol 12-QD, 11% in Moniliophthora spp (fourth day); 20% in Colletotrichum spp. (eleventh day); 46% in Phytophthora spp. (ninth day). The inhibition percentage for hydroethanolic extracts of Caiophora andina were: for the stem-leaves extract, 36% in Moniliophthora spp. (fourth day), for the flowers extract, 27% in Moniliophthora spp. (fourth day), for the stem-leaves extract, 20% in Colletotrichum spp. (seventh day), for the flowers extract, 24% in Colletotrichum spp (seventh day), for the stem-leaves extract, 31% in Phytophthora spp. (ninth day), for the flowers extract, 38% in Phytophthora spp. (ninth day). These results indicate that these filtrates are appropriate for the control of growing of phytopathogen fungi in Theobroma cacao.
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Vol. 33, No. 3