Evaluating the biofumigant potential of Brassica spp. for control of Phytophthora cactorum and Verticillium dahliae

In vitro Biofumigant effect of Brassica spp. (Brassica juncea, B. nigra, B. carinata and B. napus) was determinate in the growth of Phytophthora cactorum and Verticillium dahliae, and the stage of the life cycle (vegetative, flowering and fruit in four concentrations), with greater suppressive effect ; evaluated of the biofumigant potential of Brassica spp. were done by determining the profile of glucosinolates. Three strawberry isolates of P.cactorum (P4M, P10M and PCECT), and two tomato and melon isolates of V.dahliae (V2694 and V2884) were tested. Glucosinolates profile of Brassica spp. was determined by HPLC ISO 9167-1 (1992). B. nigra and B. juncea on fruit stage were the species with more suppressive effect on pathogens. The sinigrine (2-propenyl-glucosinolate) was the highest glucosinolate proportion in the considered species. Se determinó el efecto biofumigante de Brassica spp. (Brassica juncea, B. nigra, B. carinata y B. napus) en el crecimiento in vitro de Phytophthora cactorum y Verticillium dahliae, así como el momento del ciclo biológico (vegetativo, floración y fruto en cuatro concentraciones), con mayor efecto supresivo; evaluamos el potencial biofumigante de Brassica spp. mediante la determinación del perfil de glucosinolatos. en tres aislados de fresa de P.cactorum (P4M, P10M y PCECT), y dos aislados de tomate y melón de V.dahliae (V2694 y V2884). Se determino mediante HPLC el perfil de glucosinolatos de Brassica spp. según ISO 9167-1 (1992). B. nigra y B. juncea en estadio de fruto fueron las especies con mayor efecto supresivo sobre los patógenos. La sinigrina (2-propenil-glucosinolato) fue el glucosinolato en mayor proporción en las especies consideradas.