Genetic Analysis of Yield and some Important Traits of Oilseed Rape under Noraml and Delayed Planting Conditions

Enhancing yield and oil content in oilseed rape hybrids: Insights from line × tester and SIIG approaches

“…In oilseed rape breeding, understanding heritability helps determine the relative importance of genetic and environmental factors in controlling various traits. The estimation of broad‐sense and narrow‐sense heritability provides insights into the contribution of genetic and environmental variance to the studied traits (Amiri Oghan et al., 2018 ). High broad‐sense heritability values indicate that genetic factors play a more significant role than environmental factors in controlling these traits.…”

“…Considering traits with high heritability, particularly those with high narrow‐sense heritability, could lead to more efficient selection and breeding programs. By continuously selecting and improving these traits through recurrent selections, oilseed rape lines with higher yield potential can be developed (Amiri Oghan et al., 2018 ; Kang et al., 2023 ).…”

“…Furthermore, understanding the genetic structure and mode of inheritance for target traits is crucial for improving hybrid or openpollinated varieties of oilseed rape. Additive gene effects indicate the efficiency of selection, while non-additive effects, such as dominance and overdominance, contribute to hybrid variety development (Amiri Oghan et al, 2018;Łopatyńska et al, 2021;Masood et al, 2019).…”

“…It ranks as the third‐largest oil plant worldwide, providing edible oil after oil palm and soybean. The wide range of cultivars, including spring, winter, and intermediate types, along with its adaptability to diverse weather conditions, has facilitated its cultivation across the globe (Amiri Oghan et al., 2020 ; Hegewald et al., 2018 ). In Iran, oilseed rape production has gained prominence, supported by data from the Food and Agriculture Organization (FAO), which indicates a significant cultivation area dedicated to this crop.…”

“…Furthermore, understanding the genetic structure and mode of inheritance for target traits is crucial for improving hybrid or open‐pollinated varieties of oilseed rape. Additive gene effects indicate the efficiency of selection, while non‐additive effects, such as dominance and overdominance, contribute to hybrid variety development (Amiri Oghan et al., 2018 ; Łopatyńska et al., 2021 ; Masood et al., 2019 ). Previous studies have reported high values of broad‐sense heritability, indicating the prevalence of genetic variance over environmental variance for traits such as stem diameter, end of flowering, number of branches, and seed yield (Bidgoli et al., 2021 ).…”