Heritability and Gene Action of Different Traits in Spring Oilseed Rape using Diallel Analysis

Norouzi, Mohammad Amin; Ahangar, leila; Peygamzadeh, kamal; Sabouri, hossein; Sajjadi, seied javad

doi:10.52547/jcb.13.39.166

Cited by 2 publications

(2 citation statements)

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“…Oilseed rape ( Brassica napus L.) is a globally significant oilseed crop, renowned for its economic, industrial, nutritional, social, and ecological advantages (Gül et al., 2007 ; Masood et al., 2019 ; Norouzi et al., 2021 ; Tahir et al., 2018 ). It ranks as the third‐largest oil plant worldwide, providing edible oil after oil palm and soybean.…”

Section: Introductionmentioning

confidence: 99%

“…The choice of breeding method depends on trait heritability and gene action type (Rameeh, 2009 ). Diallele analysis and line × tester analysis are effective methods for evaluating gene functions, general combining ability (GCA), and specific combining ability (SCA), aiding the selection of superior parents in breeding programs (Norouzi et al., 2021 ; Rashid et al., 2007 ). These methods have been successfully applied in oilseed rape hybrid production to identify parents with high combining ability and to predict hybrid performance based on their genetic makeup (Ahmad et al., 2022 ; Kang et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

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

Hashemi,

Mohammadi,

Alizadeh

et al. 2024

Food Science & Nutrition

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BackgroundThe production of high‐oil‐yielding hybrid varieties is a primary objective in oilseed rape (Brassica napus L.) breeding programs. Biometric genetic experiments such as line × tester provide valuable insights into the genetic structure of traits associated with high oil yield.MethodsIn this study, 21 winter hybrids of oilseed rape were evaluated, which were generated by crossing three restorers with seven CMS lines. The experiment was conducted using a line × tester experiment based on a completely randomized block design. Phenological, agronomic, yield, and oil yield components were assessed in this study. The ideal genotype selection index (SIIG) methodology was also employed to identify superior hybrids based on all studied traits simultaneously.ResultsSignificant differences were observed between the obtained hybrids and the check cultivars. Heritability analysis revealed that phenological traits were primarily controlled by additive effects, while agronomic and qualitative traits were mainly influenced by non‐additive gene effects. Both broad‐sense and narrow‐sense heritability exhibited a wide range, underscoring the importance of genetic variance. Notably, the hybrids T1 × L5, T1 × L6, and T3 × L1 showed significant specific combining ability values of 394.74, 541.73, and 1236.79, respectively, making them the top specific combinations for increasing seed yield. Based on the SIIG index, hybrids T3 × L1, T1 × L5, T1 × L3, and T2 × L3 emerged as high‐oil‐yielding hybrids with desirable agronomic traits.ConclusionsThe identified superior hybrids by line × tester and SIIG approaches hold promise for the development of high‐yielding oilseed rape cultivars with desirable agronomic traits in oilseed rape breeding programs.

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Section: Introductionmentioning

confidence: 99%