Heritability of plant height and head diameter in sunflower (Helianthus annuus L.)

Jockovic Milan,Ciric Mihajlo,Marinkovic Radovan,Mitrovic Petar,Jocic Sinisa,Canak Petar,Prodanovic Slaven

doi:10.5937/ratpov50-3923

Abstract

Purpose of this study was to estimate heritability, in broad and narrow sense, for sunflower plant height and head diameter in order to evaluate success of selection of these traits. Fifteen sunflower populations were evaluated. Heritability values, in broad and narrow sense, were estimated in order to find out the proportion of genetic and additive factors in phenotypic expression of these traits. Study showed that the broad sense heritability for plant height ranged from 6.73% to 72.53%, while in the narrow sense it ranged from 4.76% to 95.44%. The broad and narrow sense heritability, for head diameter, varied from 0.15% to 52.58% and from 26.27% to 94.61%. Differences in heritability estimates are attributable to different genetic background of studied populations.

Highlights

Plant height and head diameter always had important role in breeding strategy of sunflower (Helianthus annuus L.)
Study showed that the broad sense heritability for plant height ranged from 6.73% to 72.53%, while in the narrow sense it ranged from 4.76% to 95.44%
The results showed that the broad sense heritability for plant height varied from 6.73% to 72.53%, while in the narrow sense it ranged from 4.76% to 95.44% (Table 1)

Summary

Introduction

Plant height and head diameter always had important role in breeding strategy of sunflower (Helianthus annuus L.). In earlier periods of cultivation the Russian peasants took seeds for sowing from plants that had high and strong stem and a large head. Previous studies have found that plant height and head diameter are important traits affecting the yield in sunflower (Miller & Fick 1997, Gvozdenović et al 2005, Jocković et al 2012). Cultivation of sunflower in regions with various climatic and soil conditions resulted in the creation of varieties and hybrids with different plant heights. Plant height is considered a quantitatively inherited character (Putt 1966, Marinković et al 1982) with optimum height between 150 and 170 cm (Marinković et al 2011).

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Conclusion