Studies on salinity effects on germination of spring cultivar of wheat along with hormone exogenous treatment

In order to investigate effects of gibberlic acid (GA3), Kintin (Kin) and poly amine Putrescine on germination of spring wheat, Pishtaz cultivar, the experiment was carried out as factorial based on completely randomized design with four replicates in Agronomy and Plant Breeding laboratory of Agricultural Department in Islamic Azad University, Varamin-Pishva branch in 2013. The first factor was salinity with four levels (S1: 3.78, S2: 5.95, S3: 10.25 and S4: 12.87 ds/m) and the second factor was six levels of hormone treatment (H0: control, H1: GA3 150 mg/L, H2: Kentin 150 mg/L, H3: GA3 150 mg/L + Kentin 150 mg/L, H4: Putrescine 2.5 mmol/L, H5: GA3 150 mg/L + Kentin 150 mg/L+ Putrescine 2.5 mmol/L). coleoptile and cleorhiza length, cleorhiza number, coleoptile, cleorhiza and seedling dry weight, Tissue water content (TWC) germination percent and number of damaged seeds were measured. Analysis of variance showed that coleoptile and cleorhiza length, cleorhiza dry weight, germination percent and damaged seeds were affected by salinity, hormone and their opposite effect (P < 0.01), while other properties were not affected. The results of this experiment indicated that application of exogenous treatment of hormone and poly amine had no significant effect in reduction of salinity effects.