Resumo

MORALES, D; BOLARIN, María del C  e  CAYUELA, Encarna. Respuesta de plantas de arroz (Oryza sativa L.) de la variedad LP-7 a la aplicación de diferentes niveles de NaCl. II. Iones inorgánicos y orgánicos. cultrop [online]. 2008, vol.29, n.3, pp. 59-62. ISSN 0258-5936.

The present study was conducted under controlled conditions of temperature, humidity and light, with the aim of determining N+, K+ and total soluble sugar contents in rice (Oryza sativa L.) plants from LP-7 variety exposed to different NaCl levels. Plants developed in a hydroponic growth chamber. Evaluations were recorded at the beginning of the experiment, seven and 14 days after applying treatments and seven days after its recovery in a nutrient solution without NaCl. Evaluations consisted of determining Na+, K+ and total soluble sugar contents. The analysis of those variables showed differences concerning ion accumulation in all plant organs, and the tested variety behaved as a Na+ including one in its root system, which makes it sensitive to high NaCl concentrations.

Palavras-chave : Oryza sativa; salinity; ions; sodium; potassium; sugars; plant response.