Genotype by environment interaction for alkenyl glucosinolates content in winter oilseed rape (Brassica napus L.) using additive main effects and multiplicative interaction model
Bocianowski, Jan | Liersch, Alina | Nowosad, Kamila
Genotype by environment interaction is important for quantitative traits in all organisms. All organisms are exposed on the influence of different environmental conditions. Changes in the performance of genotypes across different environments are referred to as genotype by environment interactions. The objective of this study was to assess genotype by environment interaction for alkenyl glucosinolates content in winter oilseed rape cultivars grown in West Poland by the additive main effects and multiplicative interaction model. The study comprised of 25 winter oilseed rape genotypes (15 F₁ CMS ogura hybrids, eight parental lines and two European cultivars: open pollinated Californium and F₁ hybrid Hercules), evaluated at five locations in a randomized complete block design, with four replicates. Across location average alkenyl glucosinolates content of the tested genotypes ranged from 4.13 (for PN66 × PN21) to 8.53 μmol g⁻¹ of seeds (for Californium). The across genotype averages alkenyl glucosinolates content at locations varied substantively from 2.43 μmol g⁻¹ of seeds in Łagiewniki, to 8.85 μmol g⁻¹ of seeds in Borowo. In the AMMI analyses, 53.92 % of the alkenyl glucosinolates content total variation was explained by environments, 13.06 % by genotypes, and 16.02 % by genotype × environment interaction. The hybrid PN66 × PN21 is recommended for further use in the breeding program due to its low average alkenyl glucosinolates content (4.13 μmol g⁻¹ of seeds) and the best stability across environments (ASV = 0.255).
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