The study was carried out to determine the responses of two parsley (Petroselinum crispum L.) hybrids; plain and curly- leafed to water stress. Besides the control, three irrigation treatments (10, 30 and 50 % of control water amount) were applied. Plant yield (leaf area, stem length and diameter, number of leaves) and quality (fresh and dry weights and concentrations of chlorophyll, carotenes, anthocyanins and vitamin C) were measured. The responses of plant yield and quality varied according to the hybrid and water treatment. The high quality was observed in curly- leafed parsley if compared to plain- leafed parsley, which had higher yield (stem length and diameter, leaf area). Moreover, water stress improved quality but decreased yield parameters in both hybrids.
Keywords: Anthocyanins; Carotene; Chlorophyll; Parsley; Quality; Stress; Yield.