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<p>This study aimed to investigate the genotype-specific responses of five strawberry genotypes, two commercial cultivars (Festival, Rubygem), and three advanced breeding lines (Genotypes 36, 61, and 112), to two-spotted spider mite, <i>Tetranychus urticae</i> Koch (Acari: Tetranychidae) infestations under the contrasting pesticide regimes. Pest mite suppression significantly enhanced fruit yield from 289 to 702&#xa0;g per plant, accompanied by increased fruit weight (14.6 to 18.5&#xa0;g) and number (19.8 to 38.1 berries). Genotype 61 displayed consistently high levels of glucose (4.04&#xa0;g/100&#xa0;g FW), malic acid (2.34&#xa0;g/kg FW), catechin (58.5&#xa0;mg/kg), and ellagic acid (26.1&#xa0;mg/kg) under untreated conditions, reflecting strong basal metabolic defense involving osmoprotective sugars, malic acid-driven respiratory flux for energy and antioxidant phenolics aiding redox homeostasis. Festival, maintained high anthocyanin (403&#xa0;mg C3G/kg) and antioxidant capacity (1473&#xa0;µmol/100&#xa0;g FW) even after pest removal, indicating robust and sustained secondary metabolism regardless of stress presence. PCA confirmed genotype × treatment interactions, revealing a trade-off between yield-related traits and metabolites, where genotypes achieving higher productivity tended to exhibit downregulation of antioxidant and quality-related compounds. Results obtained emphasize the necessity of breeding metabolically resilient genotypes that can balance yield performance and quality-related metabolism for sustainable strawberry production under increasing pest pressure, which may be further influenced by changing environmental conditions.</p>

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Genotype-dependent productivity and quality responses of strawberry to Tetranychus urticae stress under contrasting pesticide treatments

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月8日

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  • Mehmet Ali Sarıdas,
  • Erdal Ağçam,
  • Serkan Pehlivan,
  • Ekrem Atakan,
  • Sevgi Paydaş Kargı,
  • Kerem Mertoglu

摘要

This study aimed to investigate the genotype-specific responses of five strawberry genotypes, two commercial cultivars (Festival, Rubygem), and three advanced breeding lines (Genotypes 36, 61, and 112), to two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) infestations under the contrasting pesticide regimes. Pest mite suppression significantly enhanced fruit yield from 289 to 702 g per plant, accompanied by increased fruit weight (14.6 to 18.5 g) and number (19.8 to 38.1 berries). Genotype 61 displayed consistently high levels of glucose (4.04 g/100 g FW), malic acid (2.34 g/kg FW), catechin (58.5 mg/kg), and ellagic acid (26.1 mg/kg) under untreated conditions, reflecting strong basal metabolic defense involving osmoprotective sugars, malic acid-driven respiratory flux for energy and antioxidant phenolics aiding redox homeostasis. Festival, maintained high anthocyanin (403 mg C3G/kg) and antioxidant capacity (1473 µmol/100 g FW) even after pest removal, indicating robust and sustained secondary metabolism regardless of stress presence. PCA confirmed genotype × treatment interactions, revealing a trade-off between yield-related traits and metabolites, where genotypes achieving higher productivity tended to exhibit downregulation of antioxidant and quality-related compounds. Results obtained emphasize the necessity of breeding metabolically resilient genotypes that can balance yield performance and quality-related metabolism for sustainable strawberry production under increasing pest pressure, which may be further influenced by changing environmental conditions.