Influence of foliar application of arginine and phenylalanine on growth and essential oil content in dill (Anethum graveolens L.) cultivars

摘要

An experimental trial was conducted during the winter season of 2017-18 at Agriculture Faculty, University of Kufa, Iraq. The experiment included two factors. The first factor included three cultivars of dill plant (Iraqi local, Turkish local and Iranian Local), while the second factor included foliar application of amino acids at 50 mg/l for each arginine and phenylalanine on vegetative growth. Randomized complete block design (R. C. B. D.) was used as a factorial experiment in a split-plot design with three replicates for each treatment. Duncan’s multiple range test was adopted to compare mean with a probability of 0.05% level of significance. The results showed that the interaction between Iranian local cultivar and arginine significantly increased most growth parameters including plant height, dry weight, total chlorophyll and yield. The essential oil recorded superior with 0.994% in Iranian local, while the major phellandrene and limonene components recorded 37.49 and 18.01 in Turkish local.The arginine and phenylalanine application increased phellandrene, limonene and dillapoil.