Correlation and path coefficient analysis for agronomical traits in sorghum [Sorghum bicolor (L.) Moench] under shallow saline soil condition in arid region
Genetic variability and interrelationships of characters in 224 genotypes of sorghum were studied during kharif-2013, revealed highly significant genotypic differences for all the characters among the accessions. All the characters had higher genotypic and phenotypic coefficient of variation which is indicative that character expression in this sorghum population was genetic and can be exploited in breeding programme. High heritability coupled with high genetic advance was observed for fresh weight per plant, leaf area, plant height and dry weight per plant indicating that these characters are controlled by additive gene action and phenotypic selection for these characters will be effective. Fresh weight per plant was positively correlated with days to flowering, number of leaves per plant, leaf area, panicle length, dry weight per plant, grain yield per plant and 1000 seed weight. The path coefficient analysis indicated positive and significant correlation as well as high or moderate direct effects of dry weight per plant, panicle length, number of leaves per plant, plant height, grain yield per plant and 1000 seed weight on fresh weight per plant.
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