Saline stress in Amaranthaceous plants and pH stress on lettuce

Two experiments were carried to test stress reactions on plants. First, salinity experiments were performed in hydroponical cultures of spinach and beets. While the results were statistically untenable, a negative correlation between salinity and nitrate reductases was found. Second, pH stress experiments were conducted on lettuce. The optimal range for lettuce growth is near neutrality. The present work is the presentation of the first (mostly negative) results of a series of ecophysiological experiments carried since 2011.