European Journal of Biomedical and Pharmaceutical Sciences

EFFECT OF SALICYLATE FOLIAR SPRAY ON THE VEGETATIVE GROWTH, PIGMENT COMPOSITION AND BIOCHEMICAL CHARACTERISTICS IN Vigna radiata (L.) Wilczek.

Amsarajan Asha, Melbin Suji and *Krishnasamy Lingakumar

ABSTRACT

Salicylic acid (SA) is considered as one of phytohormones known to promote growth, differentiation and stress tolerance against abiotic stress. In the present study, foliar spray of SA at different concentrations (0.5μM to 2.0 μM) significantly increased the growth parameters like shoot length, root length, and dry weight, leaf area, and root nodules respectively in 10 days and 20 days old seedlings of Vigna radiata. The level of photosynthetic pigments increased considerably almost at all concentrations of SA. With regard to non-photosynthetic pigments, anthocyanin and flavonoid content decreased at 1.0μM. Even though, of proline, catalase and peroxidase activity were found to decrease in SA treated seedlings, the biochemical constituents such as soluble protein, glucose, free aminoacid and nitrate reductase activity, increased under SA.

Keywords: Free amino acid, leaf area, shoot length, salicylic acid, proline, root length