Effect of Methyl Jasmonate and Epibrassinolide on salinity resistance of two grape cultivars (vitis Vinifera L.)

Subject Areas : Journal of Plant Ecophysiology

S. NEDA SEIF ¹ , Enayat Tafazzoli ² , Ali-Reza Talaii ³ , Abdolhossein Aboutalebi ⁴ , وحید عبدوسی ⁵

1 - حق التدریس
2 - professor
3 - استاد
4 - استاد
5 - استاد

Received: 2014-08-18 Accepted : 2015-06-30 Published : 2016-12-01

Keywords: Salinity, Cultivar, Vitis vinifera L, Epibrassinolide, Methyle Jasmonate,

Abstract :

Effect of foliar application Methyl Jasmonate and Epibrassinolide on salinity tolerance in two grape (Vitis vinifera L.) cultivars ABSTRACT Salinity is a phenomenon challenging the plantation and growth of grape in arid and semiarid regions. In present research, tolerance of two grape cultivars(Flame and Perlette) was evaluated in response of various sodium chloride salinity levels(0, 25, 50, 75 and 100 mM) and the effect of Epibrassinolide (EBR) (3 and 6 µM) and Methyle Jasmonate (MeJA) (3 and 6 mM) surveyed at these conditions which was conducted as factorial experiment based on Completely Randomized Desighn (CRD) with four Replication. Based on the obtained results, the cultivar, salinity levels and hormonal treatments were significantly effective on surveyed traits. The results from analysis of variance revealed that increased salinity levels led to significant increase in values of lipid peroxidation, electrolyte leackage (EL), proline content and significant decrease in values of photosynthesis and transpiration rate, relative water content (RWC) and the content of chlorophyll a and b for two varieties. Furthermore EBR and MeJA treatments(specially 6mM MeJA) significantly increased proline content, content of chlorophyll a and b, photosynthesis and transpiration rate and decreased EL and lipid peroxidation in two varieties(except at high salinity stress) and mitigated the adverse effects of NaCl in two cultivars. In general, Perlette produced the best values for physiological and morphological indices against salinity.