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Erratum published on 23 February 2017, see Agriculture 2017, 7(3), 17.

Open AccessArticle
Agriculture 2016, 6(3), 31; doi:10.3390/agriculture6030031

The Evaluation of Exogenous Application of Salicylic Acid on Physiological Characteristics, Proline and Essential Oil Content of Chamomile (Matricaria chamomilla L.) under Normal and Heat Stress Conditions

1
Department of Research and Development, Sea Bioprospecting Co., Ltd., Tangestan Growth and Technology Incubator, Persian Gulf Science and Technology Park, Bushehr 7515797414, Bushehr, Iran
2
Department of Plant Breeding, Faculty of Agriculture and Natural Resources, Persian Gulf University, Bushehr 7561158818, Bushehr, Iran
3
Department of Plant Breeding and Biotechnology, Faculty of Crop Science, Sari Agricultural Sciences and Natural Resources University, Sari 578, Mazandaran, Iran
4
The Persian Gulf Research and Study Institute, Persian Gulf University, Bushehr 7561158818, Bushehr, Iran
*
Author to whom correspondence should be addressed.
Academic Editor: Nieves Goicoechea
Received: 15 May 2016 / Revised: 11 July 2016 / Accepted: 19 July 2016 / Published: 25 July 2016
View Full-Text   |   Download PDF [423 KB, uploaded 24 February 2017]   |  

Abstract

The objective of this study was to investigate the effect of exogenous application of salicylic acid concentrations on the physiological and biochemical traits and essential oil content of chamomile under normal and heat stress conditions as induced by delayed sowing. The experiments were conducted during 2011–2012 as a factorial using a randomized complete block design with three replications, in a very hot region. The factors included five salicylic acid concentrations (0 (control), 1, 10, 25 and 100 mg·L−1) and three chamomile cultivars (Bushehr, Bona, Bodegold). The seeds of chamomile were sown on two different sowing dates including an optimum planting date and a late planting date. The physiological traits (plant height, capitol diameter, 1000 grain weight, fresh and dried flower weight), total chlorophyll, proline and essential oil content were investigated. Analysis of variance showed that the effect of the environmental conditions (normal and heat stress) was significant on all physiological and biochemical traits with the exception of the essential oil content. The heat stress decreased physiological traits and total chlorophyll in comparison with the normal conditions but it had no significant effect on the essential oil content. Findings indicated that the application of exogenous salicylic acid improves essential oil content in chamomile cultivars under environmental heat stress conditions. View Full-Text
Keywords: German chamomile; essential oil; heat stress; salicylic acid; proline; chlorophyll German chamomile; essential oil; heat stress; salicylic acid; proline; chlorophyll
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ghasemi, M.; Modarresi, M.; Babaeian Jelodar, N.; Bagheri, N.; Jamali, A. The Evaluation of Exogenous Application of Salicylic Acid on Physiological Characteristics, Proline and Essential Oil Content of Chamomile (Matricaria chamomilla L.) under Normal and Heat Stress Conditions. Agriculture 2016, 6, 31.

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