Inter-Relationship Between Yield and Some Agronomic Characters in Barley

Path analysis has been attempted for two years using both genotypic and phenotypic correlation coefficients. In the first year, grain yield was determined by internodes per main shoot, spikelets per spike and 250-grain weight at genotypic level and by number of effective tillers per plant, spikelets per spike and 250-grain weight at phenotypic level. But, in the second year the grain yield is affected by all the characters except internodes per main shoot at genotypic level. In phenotypic level, grain yield is determined by all the characters except number of internodes per main shoot and length of main spike. The study reveals that in the case of genotypic paths, spikelets per spike and 250 grain weight are only the two variables producing positive direct effect on yield in both the years of study while in case of phenotypic paths, number of effective tiller per plant, number of spikelets per spike and 250 grain weight.