In 2010, we were determining the contents of glucosinolates in different Brassicas in order to study their influence on feeding of cabbage stink bugs (Eurydema spp.) and the consequent extent of damage. We confirmed that glucosinolates content depends on plant species, plant organs and the time of sampling. In the samples aliphatic glucosinolates (glucoiberin, progoitrin, epiprogoitrin, epiprogoitrin, sinigrin, gluconapin, glucoraphenin, sinalbin) prevailed. Glucobrassicin, an important indolic glucosinolate compound, was detected in all tested Brassicas. Its concentration in the oil radish samples was highest during the first assessment (30 DAS), 8.84 ± 0.65 μmol g -1 ds, while the oilseed rape samples displayed lowest concentration during the last assessment (134 DAS), 4.30 ± 0.80 μmol g -1 ds. The stimulative activity of individual glucosinolates or their negative influence on feeding of cabbage stink bugs in the Brassicas used in our experiment was not uniformly manifested. Based on a two-year field experiment we concluded that oil rape was the most adequate trap crop used to allure cabbage stink bugs. In future, glucosinolates should be employed to a greater extent in environmentally acceptable ways of food production, one of which is also the use of trap crops in order to reduce harmful effects of cabbage stink bugs.Associação entre a concentração glucosinolada e danos causados pelo percevejo Eurydema spp. (Heteroptera: Pentatomidae) em diferentes gramíneas RESUMO. Em 2010 o conteúdo de glucosinolatos em diferentes plantas brássicas foi determinado para estudar a influência sobre a alimentação de percevejos de repolho (Eurydema spp.) e a extensão do dano causado. Através do método do cultivo armadilha, durante o período de crescimento foram amostradas as partes aéreas de óleo de colza, mostarda branca, nabo forrageiro e dois híbridos de repolho branco. O conteúdo de glucosinolatos depende das espécies de plantas, órgãos de plantas e período da amostragem. Predominaram nas amostras os glucosinolatos alifáticos (glucoiberina, progoitrina, epiprogoitrina, sinigrina, gluconapina, glucoraphenina, sinalbina). A glucobrassicina foi detectada em todas as brássicas testadas. Sua concentração no nabo forrageiro foi mais alta na primeira avaliação (30 DAS), 8.84 ± 0.65 μmol g -1 ds, enquanto houve a menor concentração no óleo de colza durante a última avaliação (134 DAS), 4.30 ± 0.80 μmol g -1 ds. Considerando o experimento de dois anos, conclui-se que o óleo de colza foi o mais adequado como cultivo armadilha para atrair o percevejo do repolho. Glucosinolatos podem ser usados no futuro mais extensivamente em várias modalidades de produção de alimentos, entre as quais o emprego de cultivo armadilha para diminuir os danos do percevejo do repolho.Palavras-chave: fitoquímicos, percevejo do repolho, repolho, nabo forrageiro, mostarda branca.
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