Abstract

Genotypic, phenotypic and environmental correlations were computed in a collection of 37 diverse sunflower (Helianthus annuus L.) varieties grown under semi-arid conditions of Rajasthan. The genotypic correlations were generally higher than corresponding phenotypic and environmental correlations. Seed yield per plant was significantly and positively correlated with stem girth, head weight, shelling percentage and 100-seed weight. Path coefficient analysis revealed the maximum direct effect of head diameter followed by head weight, days to flowering, days maturity and 100-seed weight on seed yield per plant. Plant height, stem girth, leaves per plant and shelling percentage influenced the yield mostly through other characters.

Keywords: Sunflower, Correlation, Path analysis.