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Open Access Article
1 - Effect of Foliar Application of Chitosan and Salicylic Acid on Morphological Traits and Essential Oil Quality of Lemon Balm (Melissa officinalis L.)
Negin Safari Kamal Abadi Nasser Mohebalipour Mehdi Oraei Hasan Nourafcan Asad AsadiLemon balm is an aromatic and perennial bushy plant with interesting pharmacological and biological properties, which extensively distributed in the Mediterranean region and Asia. The effects of salicylic acid (50, 100, 150 and 200 mg.L-1) and chitosan (50, 100, 150 and MoreLemon balm is an aromatic and perennial bushy plant with interesting pharmacological and biological properties, which extensively distributed in the Mediterranean region and Asia. The effects of salicylic acid (50, 100, 150 and 200 mg.L-1) and chitosan (50, 100, 150 and 200 mg.L-1) foliar application on plant parameters, essential oil and chemical compositions of lemon balm at two different harvest stages (seedling and flowering) were evaluated. The results showed that the highest values of chlorophyll index obtained from foliar application of 150 and 200 mg/L chitosan. Application of chitosan (all concentration levels except 50 mg.L-1) significantly improved the plant height of lemon balm compared with the control. Leaf and dry weight of aerial parts per plant increased with increasing in salicylic acid and chitosan concentrations. The essential oil compounds of lemon balm (citronellal, caryophyllene, linalool, carvacrol, α-pinene, geraniol) at flowering harvest stage were significantly higher than the seedling harvest stage. Foliar application of chitosan was more effective than salicylic acid in increasing essential oil compounds of lemon balm. The essential oil content ranged between 0.07% and 0.09% in the seedling harvest stage and between 0.30% and 0.52% in the flowering harvest stage. The highest value of essential oil (0.52%) was recorded from the flowering harvest stage with foliar application of 200 mg.L-1 chitosan. The findings of the current study showed that both elicitors possess strong potential in biomass production and enhancement of essential oil compounds in lemon balm. Manuscript profile -
Open Access Article
2 - Plant biostimulants (Funneliformis mosseae and humic substances) rather than chemical fertilizer improved biochemical responses in peppermint.
Saleh Shahabivand Akbar Padash Ahmad Aghaee Yousef Nasiri Parisa Fathi Rezaei -
Open Access Article
3 - Morpho-phytochemical attributes of Echinacea purpurea (L.) Moench exposed to salicylic acid and citric acid
Seied Mehdi Miri Leila Badri Pezhman Moradi -
Open Access Article
4 - Effect of biostimulants on some characteristics of almond (Prunus dulcis Mill.) cv. Mamaei
Farshad Sadeghi Ghotbabadi Ramin Babadaei Samani Masoud Zadehbagheri Today, use of biological products such as biostimulants were taken into consideration by the agricultural researchers. These products are in consistent with environment and contain nutrients required by the plants and free amino acids. These substances can More Today, use of biological products such as biostimulants were taken into consideration by the agricultural researchers. These products are in consistent with environment and contain nutrients required by the plants and free amino acids. These substances can be effective on recovering of damaged tissues, controlling leaf stomata, preparation of organic materials needed at the flowering by the plant, increase the quality and quantity of yield and accelerate leaf formation and development. This experiment was conducted to determine effects of different concentrations and various application methods of four commercial biostimulants (Fosnutren®, Kadostim®, AminolForte®, HumiForte®) on vegetative and reproductive characteristics of almond cv. Mamaei. The experiment was conducted as factorial based on a randomized complete block design (CRBD) with three replications. Variables such as contents of proline, soluble sugar, yield of fruits, percentage of shelling, percentage of the initial and final fruit sets and fruit drops were measured. Results showed that the use of biostimulant compounds increased leaf area, internal proline content, final fruit formation, decreased fruit drop and incraesed yield of the almond. Application of biostimulants did not significantly affect the initial fruit sets, percentage of shelled kernel and soluble sugar. Aapplication of biostimulants also significantly affected leaf chlorophyll content. Manuscript profile