Responses of Some Triticale Varieties to Hydrogen Peroxide (H2O2) Priming Under Salt Stress Conditions

In this study, morphological and physiological changes at seedling growth stage under different salt stress (0, 50 and 100 mM NaCl) were determined by hydrogen peroxide (H2O2 ) pre-treatment (0, 50 and 100 mu M) to triticale seeds. For this purpose, 4 triticale varieties (Karma-2000, Presto-2000, Tatlicak-97 and Mikham-2002) which are widely grown in our country were used as plant material. In this study, plant growth parameters, chlorophyll content (SPAD), number of stomata, stomata width (mu) and length (mu) and leaf water loss rate (%) of triticale seedlings reach to two leaves were investigated 0th and 14th days after salt stress application. As a results of observations and measurements, it was determined that all morphological parameters were reduced significantly by increase in salt stress and 50 mu M H2O2 pre-treatment to triticale seeds may reduce the suppressive effect of salt stress at early seedling growth stage. In terms of the morphological parameters examined, Tatlicak-97 and Presto-2000 varieties had the best response to H2O2 pre-treatment and the varieties responded differently for all the physiological characteristics examined except for the number of stomata. In conclusion, it can be said that pre-treatment of triticale seeds with H2O2 contributed to improvement in morphological and physiological parameters and thus increase the tolerance of triticale plants to saline environment conditions.