بررسي اثرات شوري بر رشد رويشي در يازده رقم و لاين گندم با تكيه بر انباشتگي يونها

Comparison of salt tolerance in eleven varieties of wheat with emphasize on ions accumulation

The main crop in Iran and many other countries is wheat that indicated high genetic variation between varieties related to salt tolerance. In order to evaluation of salt effects on growth and Naʹ and K+ accumulation, nine varieties and lines were compared with Zagros and Tajan (local varieties). The plants were grown in hydroponics culture solution in growth chamber under control condition. The most tolerant varieties were Milan, Opata/Bow, Pego/Seri and Tan/Pwe//Sara where indicated about 55 percent reduction in dry weight. On the contrary, the most sensitive varieties were Rayan, Zagros and Atilla"s" Arvand where indicated about 75 percent reduction in dry weight. The leaf area indicated similar pattern to dry weight. The Na+ content was lower in Milan, and Tan/Pwel/Sara varieties in compare to Opata/Bow, Pego/Seri varieties, but most of Na^- accumulate in roots of OpatalBow, Pego/Seri varieties. Salt sensitive varieties accumulated higher Na+ concentration. The K+ concentration reduced with higher rate in salt sensitive varieties like Rayan and Zagros in compare to Opata/Bow, Pego/Seri varieties. The results indicated the higher salt tolerance in Opata/Bow and Pego/Seri varieties. Further experiments in field are necessary for confirmation of this results.