DefinePK

Abstract

Heritability and correlation coefficients are two genetic parameters being extensively utilized in breeding populations. The present study was planned to estimate heritability and correlation among oil traits and seed yield in sunflower. Ten sunflower genotypes were evaluated for yield performance name under viz, 17492, 17594, 17595, 17596, 17597, 17599, 17604, 17605, 17606 and 17607 in randomized complete block design. Parameters studied were 50% days to flowering, plant height, , plant population, 100 grain weight and grain yield. Association and heritability estimates were studied among various yield related attributes. Both genetic correlations and phenotypic were significant except days to flowering and plant height with head diameter with plant height in phenotypic correlation. Seed yield is positively correlated with all traits except plant height both at genetic and phenotypic level. In genetic correlation head diameter is negatively correlated with plant height. High heritability estimates were calculated for all characters. Minimum heritability estimates of 60% and 76% were found for 100 seed weight and seed yield, respectively.
Keywords: Sunflower; Genotypic correlation; Heritability; Seed yield; Plant height
http://dx.doi.org/10.19045/bspab.2016.50076