Zohre Ansar; Mehdi Baradaran Firouzabadi; Serolah Galeshi; Ahmad Gholami; Mahdieh Parsaian
Abstract
This research was carried out to investigate the effect of spraying of Origanum vulgare and Zatria mutifora essence on quantitative and qualitative characteristics of sesame (Naz cultivar) under drought stress conditions. This experiment was conducted as split plot factorial in two years as a randomized ...
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This research was carried out to investigate the effect of spraying of Origanum vulgare and Zatria mutifora essence on quantitative and qualitative characteristics of sesame (Naz cultivar) under drought stress conditions. This experiment was conducted as split plot factorial in two years as a randomized complete block design with three replications. Treatments included two different irrigation regimes (every 15 days) and drought stress (every 25 days), three levels of Origanum vulgare include 0, 40 and 60% and 3 levels of Zatria mutifora include 0, 10 and 20%. Results indicated that drought stress significantly reduced the measured indices compared to control conditions. The results also showed that water stress reduced oil content and increased protein content and activity of catalase, ascorbate peroxidase and superoxide dismutase enzymes. It was found that the most measured indices in both control and stress conditions were associated with 60% Origanum vulgare 20% Zatria mutifora essence. The use of Origanum vulgare and Zatria mutifora essence, under suitable irrigation conditions, increased the seed yield of 27.5% compared to control, whereas it increased 58% under stress conditions. Therefore, it can be stated that under dry conditions, the use of Origanum vulgare Zatria mutifora essence can induce tolerance in the plant in response to drought conditions. Since less cost is needed compared to other methods, therefore, in areas with low water conditions, it is recommended to use the Origanum vulgare and Zatria mutifora essence.
Maryam Habibi; Majid Majidian; Mohammad Rabiei
Abstract
In order to investigate the effects of boron, zinc and sulfur on yield and fatty acid composition of rapeseed(Hyola 401 cultivar), an experiment was conducted in Rasht province in 2011. A field experiment withcompletely randomized block design was performed with eight treatments in three replications.Maximum ...
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In order to investigate the effects of boron, zinc and sulfur on yield and fatty acid composition of rapeseed(Hyola 401 cultivar), an experiment was conducted in Rasht province in 2011. A field experiment withcompletely randomized block design was performed with eight treatments in three replications.Maximum grain yield (4157.6 kg ha-1) and grain oil (1770.2 kg ha-1) was obtained from S+B+Zntreatments. The highest and lowest grain oil was obtained from S+B+Zn (42.58) and control (38.37),respectively. The maximum oleic acid (234.8 mg g-1) and linolenic acid (26.68 mg g-1) and linoleic acid(55.98 mg g-1) were obtained from B+Zn+S treatments. Maximum stearic and palmitic acid were obtainedfrom control and S+Zn treatments which was 6.5 and 15.53 mg g-1, respectively. Regarding to the results,fatty acids composition of rapeseed are influenced by nutrient and since quality of edible oils depends onunsaturated fatty acids, especially linoleic and linolenic acids and these acids are essential fatty acids forthe human body that must be supplied through diet. Therefor this research showed that we are not onlyable to increase oil yield with can also increase oil quality with increasing fatty acid composition.