Study the photosynthetic pigments and phenolic compounds of safflower in response to foliar application of melatonin under water deficit condition

Authors

  • Amini, Majid Department of Agronomy and Plants Breeding, Faculty of Agriculture, Shahed University, Tehran
  • Maleki, Keyvan Department of Agronomy and Plants Breeding Sciences, Aburaihan Campus, University of Tehran, Pakdasht, Tehran
Abstract:

In order to study the effect of melatonin foliar application on photosynthetic pigments’ composition, phenolic compounds and soluble sugars on plants grown from different seed quality of safflower under water deficit condition, two field trials were conducted at Aburaihan Campus, University of Tehran in 2017 and 2018 growing seasons. The experimantal design was split-factorial randomized complete block design with four replicates. The treatments consisted of two levels of drought stress (1- normal irrigation (no-stress) and 2- irrigation after reaching 85% of soil moisture depletion of field capacity at flowering stage (drought stress)) were randomized to the main plots. Subplots were 4 treatments in number and consisted of a factorial combination of seed quality (1-stored seed and 2-recently harvested seeds) and foliar application (1-control (distilled water foliar application) and, 2- melatonin foliar application at 0.2 Mm concentration). The results showed that plant grown from recently harvested seed positively response to melatonin foliar application and this led to increase in chlrophyll a content by 33.33 % in comparison with control (distilled water foliar application). Also the results indicated that melatonin foliar application was successful to increase the flavonoids content only under non-stress condition over two seed quality treatments but on the contraty decreased flavonoids content under water deficit condition. The results demonstrated that melatonin foliar application decreased soluble sugars over both water deficit treatments. It’s seems that melatonin foliar application ameliorated the severity of stress because of its antioxidative charachteristic and provide an unstressed environment for plant so that there is no need to increase the level of metabolites that usually increased under drought condtition.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

extraction and characterization of allium irancum plant extract and its application in the green synthesis of silver nano particles and oxidation of thiocarbony1 compounds

سنتز سبز نانوذرات فلزی (nps) درسالهای اخیر توجه بسیارزیادی را به خود جلب کرده است. زیرا این پروتوکل کم هزینه وسازگار با محیط زیست از روش های استاندارد سنتز. در این پایان نامه ما گزارش میکنیم یک روش ساده و سازگار با محیط زیست برای سنتز نانوذرات نقره با استفاده از محلول آبی عصاره گیاه allium iranicum به عنوان یک عامل کاهش دهنده ی طبیعی. نانو ذرات نقره مشخص شد با استفاده از تکنیک های uv-visible، x...

contribution of setting to the study of characters and the main idea in e. brontes: wuthering heights and t. hardys: return of the native.

this thesis aims to adduce an unmitigated and comprehensive explication concerning the relationship of three significant elements of fiction: setting, chracter and theme. my research is basically placed on two outstanding novels of the 19th century: emily brontes wuthering heights and thomas hardys return of the native. my endeavour lies in studying the correlation among the three above-mention...

15 صفحه اول

Physiological and biochemical response of tomato (Lycopersicon esculentum cv. Rio Grande) to foliar application of biostimulant under water deficit stress

In order to study the effect of physiological and biochemical responses of tomato cv. Rio Grande to foliar spray of Megafol under water deficit stress, an experiment was carried out in a split plot based on randomized complete block design with three replicates in Research Filed of university of Zanjan as during 2015. Treatments consisted arrangement of three irrigation levels (starting irrigat...

full text

Physiological response of Okra cv. Kano to foliar application of putrescine and humic acid under water deficit stress

To investigate effects of putrescine (Put) and humic acid (HA) on fruit yield and physiological attributes of okra (Abelmoschus esculentus L. 'Kano') under water deficit stress, a field experiment was conducted in split plot based on a randomized complete block design with three replications. Plants were exposed to three different irrigation regimes (33%, 66% and 100% ETc) and were treated with...

full text

application of brand personality scale in automobile industry: the study of samand’s brand personality dimensions

این تحقیق شخصیت برند سمند را در ایران با استفاده از مدل پنج بعدی آکر (1997) بعنوان یک چهارچوب بطور توصیفی سنجیده است. بنابر این چهارچوب که دراصل در 42 جزء (42 ویزگی شخصیتی) ودر پنج بعد شخصیتی طراحی شده بود ودر کشورها وصنایع مختلف آزموده شده بود, پرسنامه به زبان فارسی ترجمه شده و با استفاده از روشهای ترجمه معکوس و مصاحبه عمیق با 12 متخصص ایرانی به 38 جزء کاهش یافت. و نظرسنجی ای در پنج نمایندگی ا...

15 صفحه اول

a frame semantic approach to the study of translating cultural scripts in salingers franny and zooey

the frame semantic theory is a nascent approach in the area of translation studies which goes beyond the linguistic barriers and helps us to incorporate cognitive and cultural factors to the study of translation. based on rojos analytical model (2002b), which centered in the frames or knowledge structures activated in the text, the present research explores the various translation problems that...

15 صفحه اول

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 10  issue 41

pages  0- 0

publication date 2021-04

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

No Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023