EFFECT OF PUTRESCINE AND ARGININE ON PHYSIOLOGICAL CHARACTERISTICS AND CHEMICAL CONSTITUENTS OF VITEX TRIFOLIA VAR. PURPUREA PLANT UNDER SALINITY STRESS

Document Type : Original Research Article

Authors

1 Ornamental Plants and Landscape Gardening Research Department, Horticulture Research Institute, ARC, Giza, Egypt

2 Medicinal and Aromatic Plants Research Department, Horticulture Research Institute, ARC, Giza, Egypt

10.21608/sjfop.2025.463069

Abstract

Salinity is one of the most crucial variables that limits crop productivity and quality. Pots experiment was conducted in 2019 and 2020 to evaluate the efficiency of foliar application of arginine and putrescine on reducing the harmful effects of saline water on Vitex trifolia ‘Purpurea’ plants. The plants were irrigated with various water salinity levels (2000, 3000 and 4000 ppm), the plants were sprayed with different rates of arginine and putrescine i.e. 0, 50, 100 ppm. Salinity treatments decreased growth characteristics and nutrient contents. Salinity promoted the accumulation of volatile oil content. Foliar application of arginine at a rate of 50 ppm was less effective on growth characteristics, oil content under high salinity levels (3000 and 4000 ppm). However, the foliar application of putrescine at a rate of 100 ppm resulted in positive increases in growth, essential oil and chemical constituents of V. trifolia under the different saline irrigation levels, subsequently it reduced the harmful effect of salinity.

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