hamid Mohammadi; Rana Alipour Fakhry; Mehdi Joudi; Mohammad Esmailpour
Abstract
Objective: In order to investigate the response of sage to delayed planting, the present study was performed as a randomized complete block design with three replications in the Meshkin Shahr Faculty of Agriculture research farm in 2020.Methods: The treatments were two planting dates including conventional ...
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Objective: In order to investigate the response of sage to delayed planting, the present study was performed as a randomized complete block design with three replications in the Meshkin Shahr Faculty of Agriculture research farm in 2020.Methods: The treatments were two planting dates including conventional planting date (as control) and delayed planting which were cultivated on May 5th and June 15th, respectively.Results: The results showed that delayed planting-mediated high temperature significantly increased total phenol, total flavonoids, anthocyanin, essential oil yield, and antioxidant properties by 25, 44, 85, 80, and 39 percent, respectively and decreased plant height, leaf width, and shoot fresh and dry weight by 8, 13, 41 and 34 percent, respectively compared to control. There were also negative and significant correlations between plant fresh or dry weight and essential oil percentage as well as the other measured phytochemical constituents. In addition, some essential oil constituents including α-Thujone, β-Thujone, β-Pinene, Borneol, and Viridiflorol were increased by 23, 15, 28, 37, and 46, respectively under heat stress compared to the control.Conclusion: In general, an increase in secondary metabolite in delayed planting treatment indicates that sage plants probably employed the strategy of allocating more photosynthetically fixed carbon to the biosynthesis of secondary metabolites to improve plant tolerance to high-temperature conditions via a decrease in reactive oxygen species production and/or increase in the scavenging potential of those radicles.
Elaheh Hosseini Sanavi; Bahram Abedy; Tahereh Parvaneh
Abstract
Numerous studies have been performed on the effect of rootstock and cultivar on physicochemical traits of apple fruit with their results showing different effects of these two factors. In order to study three vegetative rootstocks on some quantitative and qualitative characteristics of apple cultivars ...
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Numerous studies have been performed on the effect of rootstock and cultivar on physicochemical traits of apple fruit with their results showing different effects of these two factors. In order to study three vegetative rootstocks on some quantitative and qualitative characteristics of apple cultivars "Golden Delicious" and "Red Delicious", an experiment was carried out in factorial design based on randomized complete blocks with four replications in orchard of Mashhad Agricultural Research Center in 2021. Fruit quantitative and qualitative characteristics, including weight, volume, density, length, diameter, firmness, pH, total soluble solids, phenol content, antioxidant properties and anthocyanin have been measured. The highest amount of total phenol (652.9 μg.g-1FW) and anthocyanin (35.9 mg.g-1FW) has been measured in "Red delicious" on M9 rootstock. The results of this study show that "Red delicious" has had the highest amount of diameter (78/64 mm) and weight (166/9 g). The highest amount of fruit firmness has been observed in M9 rootstock (5/64 kgcm-3). In general, the results of this study indicate a different effect of rootstock and cultivar interaction on the studied characteristics. Depending on the purpose of gardener, different grafting compounds can be recommended "Red delicious" on M9 and MM106 rootstock with highest amount of total phenol and anthocyanin is suggested as a valuable grafting compounds in terms of health benefits under Mashhad Climatic Conditions.