1649 Original Article BIOCHEMICAL, PHYSIOLOGICAL AND GROWTH CHANGES IN RESPONSE TO IN VITRO SALINITY IN SUGARCANE ALTERAÇÕES BIOQUÍMICAS, FISIOLÓGICAS E DE CRESCIMENTO EM RESPOSTA À SALINIDADE IN VITRO EM CANA-DE-AÇÚCAR Leila Albuquerque Resende de OLIVEIRA 1; Milena Nascimento CARDOSO 1; Annie Carolina Araújo de OLIVEIRA 1; Caroline de Araújo MACHADO 2; Fernanda Vieira SANTANA 3; Bruno Trindade CARDOSO 4; Evaristo Mauro de CASTRO 5; Ana Veruska Cruz da SILVA 6; Ana da Silva LEDO 6 1. PhD student in Agricultura e Biodiversidade, Universidade Federal de Sergipe, São Cristóvão, SE, Brazil.
[email protected]; 2. PhD in Agricultura e Biodiversidade, Universidade Federal de Sergipe, São Cristóvão, SE, Brazil; 3. Master in Agricultura e Biodiversidade, Universidade Federal de Sergipe, São Cristóvão, SE, Brazil; 4. Analyst at the Embrapa Tabuleiros Costeiros, Aracaju, SE, Brazil; 5. Professor in the Universidade Federal de Lavras, Lavras, MG, Brazil; 6. Research at the Embrapa Tabuleiros Costeiros, Aracaju, SE, Brazil. ABSTRACT: Abiotic stresses in plants have aroused great research interest, unceasingly seeking for more productive cultivars under unfavorable cultivation conditions. Water deficiency and soil salinity are the most studied aspects, due to their strong impact on the growth and productivity of plants. The objective of this study was to evaluate accessions of different sugarcane species ( Saccharum spp., S. robustum , S. officinarum ) regarding tolerance to in vitro salinity, from changes in physiological, anatomical, biochemical and biometric parameters, to assist in breeding programs. To this end, shoots were used, grown on Murashige and Skoog medium, supplemented with 2% of sucrose and 4 g.L -1 Phytagel, in the presence of five concentrations 0, 50, 100, 150, 200 mM NaCl.