Effect of Saline Irrigation Water on Grain Yield and Quality of Some Rice Varieties and Lines

TWO I.YS1METER experiments were carried out in the Rice Research and Training Center (RRTC), Sakha, Kafrelsheikh, Egypt, during 2004 and 2005 seasons under controlled conditions to determine the effect of irrigation with different levels of saline water on yield and grain quality of some local and introduced rice varieties and lines (four varieties and seven lines). The salinity levels were adjusted to 2000 ppm. 4000 ppm and 6000 ppm. In addition, the control was kepi to he irrigated h lap water. The water was artificially salini/.ed by applying sodium chloride (NaCI) and calcium chloride (CaCU) at the ratio of 2: I. respeclivel). A splil plot design with three replications was used in conjunction with salinity levels on the main plots and varieties and lines in suh plots.The obtained results could he summarized as follows:The highest mean value of yield and its components were produced at tap water treatment (control) whereas the lowest one of them were produced b 6000 ppm salinity level.I he results also showd that (liza 178. Sakha 104. line AC-YT- 2003-10 and line AC-AT-2003-33 had the highest values of grain yield and yield components.Increasing salinity level up to 6000 ppm markedly increased gelatinization temperature, while the highest values of hulling and milling percentage were produced at tap water treatment.Giza 177. line AC-YT-2003-41. line GZ1368-5-5-4 and line AC- YT-2003-6. gave the highest values of grain quality. I lie varieties and lines GZI368-S-5-4. Giza 178. Sakha 104, AC- YT-23003-41 and AC-YT-2003-15 had the highest salinity index values for grain yield under 2000. 4000 and 6000 ppm salinity levels. These varieties and lines which had the highest value of salinity index had low reduction % for grain ield in both seasons