The Biochemical Substances in Plants on Salt Affected Area in Northeast Thailand, Bamnet Narong District, Chaiyaphum Province, Thailand

Abstract

This study was aimed to examine biochemical substances and their relationships in plants growing on salt affected area. The study took place in a very high salinity in Bamnetnarong District, Chaiyaphum Province between the rainy season (August 2011) and the dry season (April 2012). Two groups of plants were analyzed; halophytes and salt tolerant species. The halophytes consisted of Azima sarmentosa, Maytenus mekongensis, and Pluchea indica whereas the salt tolerance plant is Combretum quadrangulare. The results of the biochemical substances analyzes and showed that in the dry season all the plants produced more the contents of proline, hydrogen peroxide, peroxidase activity and malondiadehyde, and the percentage of electrolyte leakage than in the rainy season. Additionally, in both two seasons, the plants in the halophyte group produced substances less than in the salt tolerance plant. The best self-adjustment mechanism was discovered in A. sarmentosa, which produced a small and stable quantity of substances even though the electrical conductivity rose up.