Study of the effect of salt stress on biochemical traits of chickpea genotypes (Cicer arietinum)

Salinity is one of the most important non-biological stresses that has an adverse effect on the growth and production of crops. Chickpea (Cicer arietinum L.) is sensitive to salt stress. This study was performed to select the salt tolerance genotypes of chickpea. For this purpose, 72 genotypes were screened for dSm-112 salinity tolerance. This study was performed in a completely randomized design with three replications as hydroponic culture. Among the studied genotypes, 53 genotypes had a survival of more than 75%, and no genotype had a survival of less than 25%. The highest mean content of soluble carbohydrates, total phenol, proline, osmotic potential, inhibition of free radical activity of DPPH and relative water content were observed in genotypes with a survival range of 100-76%. The mean malondialdehyde content was highest in genotypes with a survival range of 50-26%. The results of cluster analysis showed the relative superiority of the second group genotypes including MCC1037, MCC1212, MCC1286, MCC1138, MCC1278, MCC1129, MCC1140, MCC1234, MCC1299, MCC1289, MCC1041, MCC1132, MCC1276, MCC1211, MCC1211 and MCC1010 in most of the studied traits. Chickpea genotypes appear to use a variety of mechanisms to tolerate salinity, which helps to replace more salinity-tolerant genotypes in tolerant chickpea.