The effect of priming and glycine betaine spraying on some morph-physiological and germination characteristics of bean var Derakhshan under salinity stress

In order to study of glycine betaine application on germination and morph physiological characteristics of bean under salinity stress an experiment was conducted in physiology laboratory of department of agronomy in Islamic Azad University, Varamin, Iran in summer 2016. The experiment was installed in a completely randomized design, with treatments arranged in a factorial scheme with four levels of Salinity (0, 2, 4 & 6 mmol Nacl) by Three levels glycine betaine application (0, 5& 10 ppm), with three replicates. The results showed that salinity stress effect treatment significantly for germination index, radicle dry weight, total chlorophyll, leaf protein percentage, leaf proline content, the cell membrane stability and relative water content. Also the results showed that glycine betaine application effect was significant for all experimental traits except for the cell membrane stability. The interaction between salinity stress and glycine betaine was significant for germination index, total chlorophyll, protein percentage and leaf proline content. In generally the result demonstrated that the best treatment for salinity stress was control which improves the measured traits except radicle dry weight in red bean. Also glycine betaine application could be improved the negative salinity stress.