Improvement and breeding
S. Madadkhani; A. Kheiry; M. Arghavani; M. Sanikhani; Z. Mohkami
Abstract
The use of elicitors to produce the environmentally friendly biological products and in conjunction with the modern agriculture can increase the qualitative and quantitative growth of plants and reduce the effects of environmental stresses on them. To investigate the effects of biostimulants under the ...
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The use of elicitors to produce the environmentally friendly biological products and in conjunction with the modern agriculture can increase the qualitative and quantitative growth of plants and reduce the effects of environmental stresses on them. To investigate the effects of biostimulants under the low irrigation stress on the morphological and phytochemical characteristics of Dracocephalum moldavica L., a factorial experiment was conducted in a completely randomized block design in the Zanjan University research farm in three replications in 2019. The main factor was the irrigation (100 and 70% of field capacity) and the sub-factor was the foliar application of elicitors including saffron extract (0.01 and 0.05%), ginseng extract (0.5 and 1%), amino acid L-cysteine (50 and 100 μM), and control treatment (no foliar application) at the four-, eight-, and twelve-leaf stages. The morphological and phytochemical traits were evaluated at the 90% flowering stage of the plants. In the present experiment, the highest amount of total chlorophyll (35.68 mg / g FW), carotenoids (9.18 mg / g FW), and relative leaf water content (83.20%) was obtained under the full irrigation conditions stimulated by the 50 μM L-cysteine treatment. While under the water stress conditions, the highest content of total phenols (33.17 mg GA / g DW), total flavonoids (1.53 mg QE / g DW), and antioxidant capacity (95.37%) was obtained in the no foliar application of elicitors treatment. The highest essential oil percentage (0.38%) was observed in the 100 μM L-cysteine treatment under the full irrigation conditions. Although the morphological parameters of D. moldavica had their highest values under the full irrigation conditions, the low irrigation stress led to the synthesis of higher amounts of phenolics and flavonoids and the stronger antioxidant capacity.
M.R. Haj Seyed Hadi; H. Rezaee Ghale
Abstract
To study the effects of vermicompost and foliar application of amino acids and urea on quantity and quality of chamomile (Matricaria chamomilla L.), an experiment was conducted at RAN Field Research Station in Firouzkuh, Iran in 2012. The factors were vermicompost (0, 3, 6, 9 and 12t/ha) and foliar spraying ...
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To study the effects of vermicompost and foliar application of amino acids and urea on quantity and quality of chamomile (Matricaria chamomilla L.), an experiment was conducted at RAN Field Research Station in Firouzkuh, Iran in 2012. The factors were vermicompost (0, 3, 6, 9 and 12t/ha) and foliar spraying (non-spraying or control, amino acid and urea spraying). The experimental design was factorial based on a randomized complete blocks design with 15 treatments and three replications. Results showed that the highest plant height (35.27cm), flower number per plant (181.75), and dry flower yield (2053.7kg/ha) were obtained by urea foliar application. While, the highest essential oil (0.59%), and chamazulene (7.13%), essential oil yield (11.98kg/ha) and chamazulen yield (854.17g/ha) were obtained by amino acid spraying on the plants. The application of vermicompost at a rate of 12 t ha-1 could increase all measured traits significantly. The results of interaction effects showed that the application of vermicompost at a rate of 12 t ha-1 and foliar application of amino acid had positive and significant effects on dry flower yield and chamazulen yield.
