Abstract The objective of this work was to evaluate the effect of the use of the Murashige & Skook (MS) and Linsmaer & Skoog (LS) media and of filter caps on culture flasks on the morphological and physiological characteristics of basil cultivars in vitro, as well as to determine the composition of the essential oil of plants acclimatized in pots. For the evaluation of the cultivation media, cultivars Anise, Cinnamon, Grecco a Palla, and Italian Large Leaf were used. The Anise, Cinnamon, Italian Large Leaf, and Maria Bonita cultivars were used for the evaluation of the use of filter caps. The composition of the essential oils of cultivars Anise, Cinnamon, and Italian Large Leaf was also evaluated. The basil seedlings showed a higher aerial-part dry mass and a lower hyperhydricity rate when grown in the MS medium. The flasks without filter caps produced seedlings with lower contamination rates. When acclimatized in pots, cultivars Limoncino and Anise presented the tallest plants with the largest crown diameters. In the composition of essential oils, methyl cinnamate and linalool stood out in cultivar Cinnamon, methyl chavicol in Anise, and linalool in Italian Large Leaf. In the in vitro cultivation, the evaluated cultivars present a higher aerial-part production in the MS medium and a lower contamination without the use of filters, whereas, in the pots, the composition of essential oils varies according to the cultivar. (MS LS (LS pots Cinnamon Palla aerialpart aerial part rates diameters filters whereas
Resumo O objetivo deste trabalho foi avaliar o efeito do uso dos meios Murashige & Skook (MS) e Linsmaer & Skoog (LS) e de tampas com filtros nos frascos de cultivo sobre as características morfológicas e fisiológicas de cultivares de manjericão in vitro, bem como determinar a composição do óleo essencial de plantas aclimatizadas em vasos. Para a avaliação dos meios de cultivo, foram utilizadas as cultivares Anise, Cinnamon, Grecco a Palla e Italian Large Leaf. As cultivares Anise, Cinnamon, Italian Large Leaf e Maria Bonita foram usadas para a avaliação do uso de tampas com filtros. Avaliou-se, também, a composição dos óleos essenciais das cultivares Anise, Cinnamon e Italian Large Leaf. As plântulas de manjericão apresentaram maior massa seca da parte aérea e menor taxa de hiperidricidade quando cultivadas em meio MS. Os frascos com tampas sem filtro produziram plântulas com menores índices de contaminação. Quando aclimatizadas em vasos, as cultivares Limoncino e Anise apresentaram as plantas mais altas e com os maiores diâmetros de copa. Na composição de óleos essenciais, destacaram-se metil cinamato e linalol na cultivar Cinnamon, metil chavicol na Anise e linalol na Italian Large Leaf. No cultivo in vitro, as cultivares avaliadas apresentam maior produção de parte aérea em meio MS e menor contaminação sem uso de filtros, enquanto, em vasos, a composição de óleos essenciais varia de acordo com a cultivar. (MS LS (LS vitro vasos Avaliouse, Avaliouse Avaliou se, se Avaliou-se também copa destacaramse destacaram enquanto