واکنش گندم و علف‌هرز دم روباهی باریک به تنش شوری

To determine the effects of salt stress on wheat3 yield and yield components, in competition with foxtail grass4 weed, a study conducted under controlled conditions during 2011-2012 in College of Agriculture, Shiraz University. The experiment was factorial based on completely randomized design with three replications. Treatments included five levels of saline irrigation water with EC of 2, 4, 6, 8 dS m-1 along with tap water as control and two levels of weedy and weed-free. Grain yield, grain number per spike, and grain weight per spike were not significantly affected by treatments but 1000-grain weight was significantly affected. The highest grain yield (2.2 g pot-1) was achieved at 6 dS m-1 and weed-free treatments. The highest protein content (18.8%) at the highest salinity level was observed. An increase in Na+ in both shoots and roots of wheat and the whole plant of weed were found with an increase in the NaCl concentration. The highest weed dry weight was observed at 6 dS m-1 and the lowest one at the highest salinity level.