PROTOCOLO DE ASSEPSIA PARA A MICROPROPAGAÇÃO DE CANA DE AÇÚCAR
PROTOCOLO DE ASSEPSIA PARA A MICROPROPAGAÇÃO DE CANA DE AÇÚCAR
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DOI: https://doi.org/10.22533/at.ed.61724020217
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Palavras-chave: Saccharum officinarum L, propagação, meristema apical.
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Keywords: Saccharum officinarum L, propagation, apical meristem
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Abstract: Sugarcane (Saccharum officinarum L.) has great economic importance in agriculture in Brazil and, more recently, with the use of ethanol on a global scale, it becomes even more relevant. The most commonly used way to obtain seedlings of this species is from stem segments. However, a very common problem in this form of propagation is the spread of diseases. A tool that can be used to minimize this is micropropagation, a technique considered an advantageous alternative for the multiplication of plants, due to the time savings compared to conventional techniques, in addition to obtaining seedlings of excellent phytosanitary quality and genetically identical to the source material. Therefore, this work aimed to test three asepsis protocols in sugarcane apical meristem in order to obtain micropropagated plants. The experiment was carried out in the Biotechnology laboratory at PUC-PR, Toledo campus. To carry out the experiment, a completely randomized design was used, containing three treatments with 10 replications each. The treatments tested were: T1 (triple washing in distilled water, 70% alcohol for 2 minutes, 2% sodium hypochlorite (NaClO) for 15 minutes, 1.5% citric acid for 5 minutes); T2 (70% alcohol for 30 seconds three times, immersion in distilled water, 2% NaClO for 15 minutes, 1.5% citric acid for 3 minutes); T3 (triple washing in distilled water, 70% alcohol for 1 minute, 2% NaClO for 15 minutes, 2.5% mancozeb fungicide for 15 minutes). All meristems were inoculated in MS medium + activated charcoal (2g.L-1) and kept in a growth room (25ºC) in the dark for 15 days. Treatment 2 promoted the best result (40% of healthy explants). However, this percentage is considered a low value, so new tests must be carried out to increase the percentage of healthy explants.
- Ana Hellen de Oliveira Tavares
- Juliana Claudia Grings Rossato
- Sara Gabrieli Zancanella