relationship of physiologic growth indices with yield ccomponents of barley genotypes (hordeum vulgare l.)

for evaluation the effect of morpho-physiological parameters on yield and yield components of barley genotypes, an experiment was conducted in a randomized complete block design in 4 replication in gorgan agriculture science and nature resource field experimental during 2006-2007. the trait was 10 barley genotypes: bomi, torkaman, eize, siah, sahra, 1-yeknavakht, 14g, 11g, 5g and 15g. the results showed that there is no significant difference in grain yield in these genotypes. growth indices with grain yield and yield components had positive correlation. evaluation genotypes considering total dry matter and growth parameter showed that modern and modified genotypes, had higher leaf area index, and for that they have higher crop growth rate, net assimilation rate and total dry matter in period of growth season.