Comparison of the effect of foliar application of growth regulators methyl jasmonate and salicylic acid in the assessment of some physiological, biochemical and molecular characteristics of Kashif tea variety (Camellia sinensis) under drought stress

Document Type : Research Paper

Authors
Maryam Ja,mali Langroudi 1
Hamid Sobhanian 2
shahin jahangirzadeh khiavi 3
Gholamreza Bakhshi khaniki 1
Enayatollah Yazdanpanah 1
1 Department of Biology, Payam Noor University, P.O. 19395-4697, Tehran, Iran
2 Payam e Noor University
3 Tea Research Institute, Horticultural Science Research Institute, Agricultural Research, Education and Extension Organization, Lahijan, Iran
10.22034/jpr.2025.8493.3367
Abstract
Drought stress affects the growth and quality of tea leaves. In this study, the effect of foliar spraying of different concentrations of methyl jasmonate (0, 0.1, and 0.2 mM) combined with salicylic acid (0, 0.1, and 0.2 mM) on increasing plant resistance to drought stress was investigated at the Iranian Tea Research Institute. Effect of drought stress in randomized blocks with 3 replications and three levels: 1- Complete irrigation 2- Irrigation interruption for 6 days with foliar spraying at two-day intervals for treatments T1 (0mj and 0SA), T2 (0.1 mM mj and 0 SA), T3 (0.2 mM mj and 0 SA), T4 (0 mj and 0.1mMSA), T5 (0.1mM mj and 0.1mMSA), T6 (0.2 Mm mj and 0.1 mMSA), T7 (0 mj and 0.2 mMSA), T8 (0.1mM mj and 0.2 mMSA), T9 (0.2Mm mj and 0.2mMSA) 3- Irrigation interruption for 12 days with foliar spraying for treatments. As a result of foliar spraying, an increase in catalase and SOD enzymes, total sugar and protein content, total carotenoid and chlorophyll, proline content, proline-5-carboxylate synthetase gene expression and catalase gene (CAT) were observed, which were significant at the P

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Journal of Plant Research (Iranian Journal of Biology)
Volume 38, Issue 2
Summer 2025
Pages 113-125

  • Receive Date 09 July 2024
  • Revise Date 05 January 2025
  • Accept Date 16 February 2025