A pot experiment was carried out in the experimental farm of Fac. of Agric. At Moshtohor in two successive winter seasons of 1990/1991 and 1991/1992 to elucidate the effect of cycocel foliar spry at 0, 250 and 500 ppm on growth, chemical composition, yield and quality of pea plants grown under salinity stress of sodium in either chloride or sulfate form and at concentrations of 6000 and 9000 ppm.
Obtained results showed that salinity at the studied concentrations and in both forms of Na (chloride or sulfate) significantly depressed all studied growth aspects i.e. plant height, number of leaves and fresh and dry weight of plant. Contrary to this effect, spraying plants with cycocel especially at low concentration significantly reduced the depressive of salinity on such growth parameters. In addition, usage of saline water in irrigation has a decrement effect on photosynthesis pigments (chlorophyll a and b) and estimated macro-nutrients (N, P and K). However, it led to an increase in both Ca and Na content of plant foliage. In this regard, spraying pea plants with cycocel tended to reduce the decrement effect of salinity on such estimated chemical constituents and increased its content.
Obtained results showed also that irrigation pea plants with saline water containing Na-salts either in chloride or sulfate form in its different used concentrations reduced the number of days elapsed to the anthesis of the first flower, lowered the poison of the first flower node, decreased number of flowers and pods per plant, average pod weight and yield of pods per plant as well as number of seeds per pods. Moreover, it decreased the content of N, P and K and increased Na and Ca content of produced seeds. However, spraying pea plants with CCC especially the depressive effect of salinity in all aforementioned flowering and yield parameters as well as chemical constituents of produced seeds.