الفهرس 
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Abstract
Two pot experiments were carried out during two successive summer seasons of 2017 and 2018 in the wire-house of Agric. Bot. Dept., Fac. Agric., Zagazig University, to evaluate the efficiency of different sea water dilutes, i.e.; 1000, 2000 and 3000 ppm salinity levels beside tap water (500 ppm control) for irrigation; foliar application with humic acid (HA) at 2 and 4 g/L, proline (pro) at 50 and 100 ppm, naphthalene acetic acid (NAA) at 25 and 50 ppm as well as distilled water (control) and their interactions on growth, some physiological and biochemical content, yield and its components, seed chemical composition, stem and leaf anatomy traits of common bean plants (Phaseolus Vulgaris L.) cv. Giza 3. Results revealed that increasing sea water levels up to the highest level (3000 ppm) significantly decreased plant height, number of leaves/plant, number of branches/plant, leaf area, fresh and dry weight of (root, stem and leaves), chlorophyll a, b, total chlorophyll (a+ b) and carotenoids concentration in leaf tissues. In addition percentage of NPK, protein, carbohydrate fractions in stem, leaves and seeds of common bean plants were also decreased. Also, the yield and its components, seed chemical composition, anatomical chrachters for stem and leaf of common bean plants were decreased with increasing sea water levels up to the highest level (3000 ppm) comparison with control (tap water). On the contrary, proline content and enzyme activity (catalase and peroxidase) in leaves were increased with increasing salinity levels up to 3000 ppm. There was a gradual significantly increased in all the previously mentioned traits (morphological, physiological, biochemical, yield and anatomical) when spraying common bean plants with some ameliorative substances (humic acid at 2 and 4g/L, proline at 50 and 100 ppm and naphthalene acetic acid at 25 and 50 ppm) compared to control (distilled water). In general, the most favorable concenteration in used substances was 2g/L for humic acid, 100 ppm proline and 25 ppm naphthalene acetic acid. It could be concluded that spraying plants with humic acid, proline and naphthalene acetic acid mitigate the harmful effect of sea water salinity on common bean plants. The best beneficial interaction treatment was irrigated plants with tap water or sea water at 1000 ppm and spraying with humic acid at 2g/L.