تاثیر پرایمینگ و تنش خشکی روی خصوصیات جوانه زنی و مورفولوژیک ذرت

For evaluation effect of priming with phytohormones under drought stress on maize growth on germination and morphological characteristics was determined in two experiment, one of the in laboratory in carried out completely randomized design and another in field on the split plot in carried out completely randomized block design using three replications in Fars province of Iran, 2011. Treatments in field consisted of: halt irrigation in main plots in three level: control (without stress), halt irrigation in end of vegetative growth stage (silking (R1)) and halt irrigation in middle of reproductive growth stage (blistering (R2)) and priming in sub plots, in four level: control (dry seed), GA3 (20ppm), auxin (5ppm) and distilled water for 12 hours of soaking. Results showed that was significant difference between plant growth regulators on percentage of germination. So that priming with water and GA3 improved percentage of germination with regard to control 27.5%. Just as priming with auxin increased percentage of germination 18.3%. In interaction halt irrigation and priming observed that each three priming treatment with regard to control (seed dry), increased significant biological yield and length of plant. Halt irrigation R1 stage, decreased significant all of traits.