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Chitosan in the induction of resistance to the damping off tomato seedlings caused by Rhizoctonia solani Kuhn Sci. Agrar.Paran. / SAP
Rocha, Rita de Cassia Dosciatti Serrão; Mazaro, Sérgio Miguel; Possenti, Jean Carlo; Freddo, Álvaro Rodrigo; Zorzzi, Ivan Carlos; Dallacosta, Nean Locatelli.
The objective of this study was to evaluate the potential of chitosan in the damping off tomato resistance induction caused by Rhizoctonia solani. The tomato seeds were submerged in solution with chitosan for twenty minutes in concentrations of 0.25; 0.5; 1 and 2% and in the control (distilled water only). The seeds were sown in polystyrene trays containing substrate inoculated with R. solani and kept in a growth chamber with 12 hours photoperiod and temperature of 25 ºC ± 2 °C for 14 days. After this period we evaluated the survival of seedlings, length and fresh weight and activity of the enzyme phenylalanine ammonia lyase (PAL), chitinase and β-1,3-glucanase. The results showed that chitosan when applied to the treatment of tomato seeds at a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fitopatologia; Proteínas relacionadas à patogênese (PRP’s); Solanum lycopersicum L..
Ano: 2017 URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/15038
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Induction of resistance against damping off caused by Fusarium sp. in beet seedlings, by seed treatment with essential oil of Aloysia citriodora Palau Sci. Agrar.Paran. / SAP
Freddo, Álvaro Rodrigo; Mazaro, Sérgio Miguel; Borin, Maristela dos Santos Rey; Busso, Cleverson; Cechin, Flávio Endrigo; Zorzzi, Ivan Carlos; Dalacosta, Nean Locatelli; Lewandowski, Adriano.
This study aimed to evaluate the potential of essential oil of Aloysia citriodora in the induction of resistance in beet seedlings against damping off caused by Fusarium sp. The work was carried out by treating the seeds with concentrations (0.0625%; 0.125% and 0.25%) of essential oil of A. citriodora in distilled water plus surfactant Tween 80® (0.5%) and control treatment (distilled water plus surfactant Tween 80® 0.5%). The seeds after treated with essential oil were sown in substrate inoculated with Fusarium sp. It was evaluated after 14 days of sowning: the percentage of emergency at 4 and 14 days; the incidence of post-emergence damping off; green mass; the length of seedlings and biochemistry of plant tissues (total protein content, enzymatic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beta vulgaris L.; Fitopatologia; Plantas medicinais; Verbenaceae..
Ano: 2016 URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/13451
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