Effects of salicylic acid and jasmonic acid on some physiological and biochemical characteristics of marigold (Calendula officinalis L.) under salinity stress

Subject Areas : Journal of Plant Ecophysiology

M. Baniyaghoub Abkenar ¹ , A. Pazoki ²

1 - گروه زراعت و اصلاح نباتات، واحد یادگار امام خمینی (ره) شهرری، دانشگاه آزاد اسلامی، تهران، ایران
2 - گروه زراعت و اصلاح نباتات، واحد یادگار امام خمینی (ره) شهرری، دانشگاه آزاد اسلامی، تهران، ایران

Received: 2015-11-29 Accepted : 2016-02-17 Published : 2016-06-01

Keywords: Anthocyanin, Stress, Malondialdehyde, Extract, Proline,

Abstract :

In order to evaluate the effects of various concentrations of salicylic and jasmonic acid on root dry weight, shoot dry weight, contents of chlorophylls, carotenoids, anthocyanin, soluble sugars, proline, and malondialdehyde, percentage and weight of flower extract of marigold plants under salinity stress, a factorial experiment was conducted in completely randomized design with four replications at research greenhouse of Islamic Azad University, Shahre-Rey Branch. The treatments were salinity at four levels With irrigation water including (0, 25, 50 and 75 mM) NaCl, Spraying salicylic acid in two levels (0, 0.7 mM) and, jasmonic acid in two levels (0, 100 µM). The results showed that the root dry weight, aerial dry weight, contents of chlorophylls, carotenoids, anthocyanin in the leaves and weight of flower extract were significantly decreased by increasing the severity of salinity. It was also found that the levels of soluble sugars, proline, malondialdehyde and flower extract percentage were significantly increased by increase in salinity levels. It was also observed that application of salicylic and jasmonic acid led to increase in root dry weight (72%), shoot dry weight (59%) and weight of flower extract (43%) that Somewhat reduce the negative effects of salinity.