Water Uptake and Germination of Wheat Grains in Different Solutions

الملخص

Wheat grains of Cv. Sedi Mesri 1, a short stemmed variety were germinated on blue blotters of the Kimpak type in a 25 C temperature controlled germinator with 100% humidity for 66 hours or until the radicle emerged. The increase in weight of the grain was recorded after 1,6.18.42 and 66 hours. The data on percent germination and the length of the radicle and plumule were measured at the end of the experiment. In each chemical solution, water absorption was the highest in 1-6 hour interval and the lowest in 42-66 hour interval. The germination percentage was affected by H2O2, KNO3 and coumarin but not by thiourea. Hydrogen peroxide increased percent germination while KNO3 and coumarin decreased it. The length of the radicle and plumule were increased by H2O2. decreased by coumarin and not affected by thiourea and KNO3.