Published in Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1
Written by Danil-Marian STANCIU, Lizica SZILAGYI, Costică CIONTU
This study investigates the expression of heterosis in sunflower (Helianthus annuus L.) hybrids by analyzing their performance in comparison with newly developed parental inbred lines. The experiment was conducted under field conditions in Romania, within the experimental fields of the Agricultural Research Company Fundulea. A total of four sunflower hybrids and their corresponding parental inbred lines were evaluated. Key agronomic traits, including seed yield and selected morphological characteristics, were recorded and subjected to statistical analysis. Heterosis effects were quantified relative to both mid-parent and better-parent values, providing a comprehensive assessment of hybrid vigor. The results indicated consistent positive heterosis across most traits, with several hybrids surpassing their parental lines. Significant differences among genotypes (p < 0.05) emphasized the influence of genetic background on heterosis expression. Variability among hybrid combinations further highlighted the importance of selecting genetically diverse and complementary parental lines for breeding programs.
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{simplepopup popup="false" name="Citation63"}STANCIU D.M., SZILAGYI L., CIONTU C. 2026, ASSESSMENT OF HETEROSIS PERFORMANCE IN SUNFLOWER HYBRIDS DERIVED FROM INBRED PARENTAL LINES. Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1, ISSN 2285-5785, 519-524. {/simplepopup}