نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم و مهندسی باغبانی، دانشکده کشاورزی، دانشگاه تربیت مدرس تهران
2 گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This research was aimed at foliar applying two amino acids including L-phenylalanine and L-tyrosine with different concentrations (0, 250, 500, 750, and 1000 ppm) to improve growth parameters, essential oil, and total content of phenolic compounds of spearmint. For this purpose, two split-plot experiments were conducted based on completely randomized (9 treatments with 3 replications; 2 harvests; under greenhouse conditions) and randomized complete block (9 treatments with 3 replications; 2 harvests; under farm conditions) designs in the agricultural college of Tarbiat Modares University (Tehran, Iran). Morphological and biochemical traits were evaluated in the harvested plants at 50% flowering stage. The results showed that L-phenylalanine and L-tyrosine had significant effects on the growth and biochemical characteristics of the plant. The treatments including L-phenylalanine 250 ppm in the first greenhouse harvest, L-phenylalanine 1000 ppm in the second greenhouse harvest, L-phenylalanine 500 and L-tyrosine 500 ppm in the first farm harvest, and L-phenylalanine 750 ppm in the second farm harvest had the most significant effects on all studied traits. The highest carvone (72.4%) and limonene (29.3%) amounts were observed in the L-phenylalanine 1000 and 250 ppm treatments, respectively in the second greenhouse harvest. In general, L-phenylalanine 1000 ppm in the greenhouse harvests and L-phenylalanine 500 ppm in the farm harvests had the best results. Considering that the application of growth stimulants is consistent with sustainable agriculture and also had a positive effect on the results in the present research, their use could be recommended.
کلیدواژهها [English]
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