Application of different methods in the determination of heritability of some quantitative traits in the sunflower (Helianthus annuus L.) sinthetic NS-S-1

Abstract

The aim of this study was to determine the heritability coefficients in the narrow and broad sense by applying different methods and different progenies for plant height, number of leaves per plant, head diameter and seed yield per plant in the sunflower synthetic NS-S-1 in 2 years of evaluation. The narrow sense heritability was estimated according to Mather and Jinks, Verhalen and Murray, Warmer, and Griffing. The broad sense heritability was determined according to Mahmood and Kramer, Briggs and Knowles, Mather, Burton, Lawrence and Jinks, Weber and Moorthy and Mather and Jinks. Average values of heritability in the broad sense for plant height ranged from 30.06% to 98.87%, while in the narrow sense ranged from 17.35% to 81.86%. The broad sense heritability for number of leaves per plant ranged from 9.08% to 96.10%, while in the narrow sense ranged from 26.15% to 91.93%, Average values of heritability in the broad sense for head diameter and seed yield ranged from 31.39% to 89.99% and 27.42% to 97.88%, while in the narrow sense heritability ranged from 20.69% to 73.90% and 16.18% to 80.64%.