{"id":10830,"date":"2026-02-27T09:58:48","date_gmt":"2026-02-27T09:58:48","guid":{"rendered":"https:\/\/agri-research-journal.net\/SjarEn\/?p=10830"},"modified":"2026-02-27T09:58:48","modified_gmt":"2026-02-27T09:58:48","slug":"effect-of-foliar-spraying-with-melatonin-mt-on-tobacco-var-shak-al-bintunder-artificial-drought-stress-conditions-with-polyethylene-glycol-peg","status":"publish","type":"post","link":"https:\/\/agri-research-journal.net\/SjarEn\/?p=10830","title":{"rendered":"Effect of foliar spraying with melatonin (MT) on tobacco var. Shak Al-Bintunder artificial drought stress conditions with polyethylene glycol (PEG)"},"content":{"rendered":"

Ahmed soufi1*<\/sup><\/strong><\/span><\/p>\n

1 <\/sup>Department of Field Crops, Faculty of Agriculture, Tishreen University, Lattakia, Syria. <\/span><\/p>\n

(*Corresponding author: Ahmed. E-mail: 7mada.movo9@gmail.com<\/a>, phone:+963991266905).<\/span><\/p>\n

Received:<\/strong> 23\/ 07\/\u00a0 2024\u00a0\u00a0\u00a0\u00a0 Accepted:<\/strong> 8\/ 10\/ 2024<\/span><\/p>\n

Abstract<\/strong><\/span><\/p>\n

The research was carried out in 2024, on the experimental farm in the village of Qara Falah in Latakia Governorate- Syria, to study the effect of treatment with melatonin acid at concentrations (50, 100 and 150 microliters) on some biochemical and productive characteristics of the local tobacco plant (Shak Al-Bint) under conditions of drought soil treatments by Poly Ethylene Glycol (PEG) solutions (15, 30 and 45 %), corresponding to final osmotic potentials -0.52, -1.04 and -1.56 MPa, which were distributed according to the randomized complete design (R.C.D) with three replicates. Many important indicators were measured, including: leaf content of: chlorophyll (\u00b5g\/g), proline (\u00b5mol\/g), manol d-aldehyde MDA (nmol\/g), and yield of green and dry leaves (g\/plant). The results showed a decrease in the green tobacco yield (75 g\/plant) and dry (20 g\/plant) under drought stress conditions at a concentration of 45%. The chlorophyll content of the leaves also decreased steadily with increasing applied stress, which in this context reached (463 \u03bcg\/g). In contrast, the chlorophyll content of the leaves increased when spraying with melatonin at a concentration of 50 \u03bcl (710 \u03bcg\/g), which was positively reflected on the green and dry leaf yield. The proline content of the leaves also decreased (0.9 \u03bcmol\/g), especially at a low concentration of melatonin. The results showed that the treatment with a diluted concentration of melatonin acid was superior to all treatments and the control for all studied indicators. Therefore, it is recommended to use melatonin acid, especially at a low concentration (50) \u03bcl, for its role in improving many chemical indicators, which is reflected in increasing tobacco productivity under drought stress conditions.<\/span><\/p>\n

Keywords: melatonin, tobacco, Shak Al-Bint cultivar, drought stress.<\/strong><\/span><\/p>\n

\u00a0Full paper in Arabic: PDF<\/a><\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Ahmed soufi1* 1 Department of Field Crops, Faculty of Agriculture, Tishreen University, Lattakia, Syria. (*Corresponding author: Ahmed. E-mail: 7mada.movo9@gmail.com, phone:+963991266905). Received: 23\/ 07\/\u00a0 2024\u00a0\u00a0\u00a0\u00a0 Accepted: 8\/ 10\/ 2024 Abstract The research was carried out in 2024, on the experimental farm … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10830","post","type-post","status-publish","format-standard","hentry","category-sjar"],"_links":{"self":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/10830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10830"}],"version-history":[{"count":1,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/10830\/revisions"}],"predecessor-version":[{"id":10833,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/10830\/revisions\/10833"}],"wp:attachment":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}