interrelationships between chlorophyll content and seed yield in bread wheat under saline conditions

the measurement of chlorophyll content of leaf is as an appropriate criterion in breeding programs to increase the rate of leaf photosynthesis. in order to study the relationship between chlorophyll content and seed yield under saline conditions, 41 wheat genotypes were evaluated in two conditions (normal and salinity stress) at the research field of the national salinity research center (nsrc). the salinity of water used in irrigation in saline and non-saline conditions was 10 and 2 ds.m-1 respectively. the results of the analysis of variance indicated significant differences in bread wheat genotypes for chlorophyll content and seed yield in both the non-saline and saline conditions. according to the results of compare of means, genotypes shahryar, rushan and bumi yazd had the highest seed yield and also had the highest chlorophyll content among the genotypes under saline conditions. therefore can be concluded that tolerant genotypes and with high yield had the highest chlorophyll content under saline conditions. also, the results of correlation and factor analysis indicated that there was a positive relationship between chlorophyll content and seed yield in saline conditions. therefore, selecting genotypes with high chlorophyll content under salt stress can lead to the selection of genotypes with high yield and salt tolerant.