الفهرس 
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Abstract
A laboratory experiment was carried out at Central Laboratories in Central Administration for Seed Testing and Certification, Ministry of Agriculture and Land Reclamation, Egypt, during January 2019. The objective of this investigation was to investigate the effect of soaking with chitosan and proline levels under salinity stress on wheat Shandaweel 1 cultivar germination and seedlings characters. The experiment was conducted in factorial experiment in randomized complete block design (RCBD) with four replications. The experiment included three factors. The first factor included four levels of soaking with chitosan (0.25, 0.50 and 0.75 % ”w/v”), besides control treatment (without soaking with chitosan). The second factor integrated with five levels of soaking with proline (1, 5, 9 and 13 mM), in addition control treatment (without soaking with proline). The soaking treatments with chitosan and proline were done for 6 hours. The third factor incorporated with four levels of salinity as sodium chloride (NaCl) i.e. without salinity (0), 4, 8 and 12 dSm-1 of NaCl. It could be noticed that soaking wheat seeds in chitosan at the highest rate of (0.75 %) surpassed the other studied levels of soaking with chitosan and recorded the highest values of germination and seedlings characters, followed by soaking in chitosan at the rate of 0.50 % without significant differences between them in most cases and then soaking in chitosan at the rate of 0.25 %. However, control treatment (without soaking with chitosan) recorded the lowest values of these characters. It could be observed that the highest values of germination and seedlings characters were produced from soaking wheat seeds in the highest level of proline (13 mM), followed soaking in proline at the rate of 9 mM without significant differences between them in most cases, then soaking in proline at the rate of 5 mM and soaking in proline at the rate of 1 mM. Increasing salinity levels from 0 to 4, 8 and 12 dSm-1 of NaCl significantly reduced germination characters, seedling characters and physiological indices of wheat, with exception mean germination time that had a reverse trend. from obtained results in this study it could be concluded that for maximizing germination and seedling parameters of bread wheat Shandaweel 1 cultivar under salinity stress, it could be recommended to soaking with the mixture of chitosan at the rate of 0.75 or 0.50 % and proline at the rates of 13 or 9 mM for 6 h.