Salinity tolerance in Schinopsis quebracho colorado : Seed germination, growth, ion relations and metabolic responses
D.A.M.loni; M.R.G.lotta; C.A.M.rtínez
Journal of Arid Environments 72(10): 0-1792
ISSN/ISBN: 0140-1963 DOI: 10.1016/j.jaridenv.2008.05.003
Soil salinity is a major abiotic stress influencing plant productivity worldwide. Schinopsis quebracho colorado is one of the most important woody species in the Gran Chaco, an arid and salt-prone subtropical biome of South America. To gain a better understanding of the physiological mechanisms that allow plant establishment under salt conditions, germination and seedling growth of S. quebracho colorado were examined under treatment with a range of NaCl solutions (germination: 0-300 mmol l-1 NaCl; seedling growth: 0-200 mmol l-1 NaCl). The aim was to test the hypothesis that S. quebracho colorado is a glycophite that shows different salt tolerance responses with development stage.