Association and path analysis for seed yield and component characters in sunflower (Helianthus annuus L.)

Genotypic and phenotypic correlation among seed yield and eleven component characters were studied in 11 genotypes of sunflower. Association analysis of parents revealed that number of seeds/head, 100-seed weight, head diameter and per cent seed filling had high significant positive correlation with seed yield. Number of seeds/head, 100 seed weight, head diameter and per cent seed filling also had significant positive intercorrelation among themselves. Number of seeds/head, per cent seed filling, hull content and plant height influence the seed yield directly whereas 100-seed weight influenced indirectly through no.of seeds/head and per cent seed filling. Very high indirect contribution for most of the traits is through number of seeds/head. Hence, this trait should be given priority in sunflower seed yield improvement programme.