DefinePK

Abstract

The current experiment was carried out to evaluate the advance sunflower (Helianthus annuus L.) genotypes for genetic parameters including phenotypic correlation and heritability. In this context, a total of 18 sunflower genotypes were grown in a randomized complete block design with four replications at experimental filed of Oilseeds Section, ARI, Tandojam during the growing season, 2015. The mean squares were differed significantly (P≤0.01) for all the studied traits among the tested genotypes, designating that used materials has worth to be evaluated for further experiments. The correlation results depicted that traits, such as, plant height, head diameter, seeds head-1 and seed index established positive and significant correlations with seed yield plant-1, demonstrating that genotypes having higher extent of these traits may be preferred in selection for evolving high yielding sunflower genotypes. High heritability estimates (broad sense) were detected for all the studied traits except head diameter, which expressed moderate heritability, representing that the variations witnessed was generally under the control of genetical factors than that of environmental factors; therefore, these characters may be improved directly on the basis of phenotypic selection
Keywords: Sunflower; Seed yield; Heritability; Correlation
http://dx.doi.org/10.19045/bspab.2016.50083