اثر پرایمینگ بذر (هیدروپرایمینگ) بر مؤلفه‌های جوانه‌زنی و رشد گیاهچه‌های ذرت تحت تنش خشکی

In order to evaluate the effect of priming on seed germination of Zea mays under drought stress an experiment was arranged in a factorial experiment based on completely randomized design with four replications in laboratory of agriculture college of the university of Guilan.Treatments were combinations of 5 levels of drought stress (0, -0.2, -0.8, -1.2 and -1.6 MP) that was carried out by PEG in 2 levels, primed and non-primed seeds with 4 replication. Seeds were of SC700. In the end of experiment, were measured germination percentage, radicle and shoot length, shoot fresh weight, radicle fresh weight, vigor index, radicle dry weight ,shoot dry weight and seedling dry weight. Priming increased germination percentage, vigor index and seedling dry weight compared with non- priming seeds. Overall increased droutht level, led to the reductions in the traits under study, but these reductions wer higher for non-primed compared to primed seeds. The present study revealed that under drought conditions, seed priming could be used as a method for improving seed performance in zea mays.