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<p>Pea is a cornerstone crop in the Andean economy; however, environmental variability hampers the identification of stable materials with predictable performance. Ten climbing (vining) pea genotypes—eight carrying the afila (af) gene and two commercial checks (Andina and Sindamanoy)—were evaluated across nine environments in southwestern Colombia over two cropping seasons. Genotype × environment (G×E) interaction and green pod yield stability were assessed using the Eberhart–Russell and AMMI models. Combined ANOVA revealed significant effects of genotype, environment, and G×E. Under Eberhart–Russell, GR10 and GR28 showed β₁ ≈ 1 with non-significant S²d, indicating broad adaptation and high yield predictability; GR2 (β₁ &gt; 1) was specifically adapted to favorable environments, whereas Sindamanoy (β₁ &lt; 1) to unfavorable environments, both with significant S²d (unstable performance). Among environments, Puerres recorded the highest mean yield (17.14 t ha⁻¹) and Pasto the lowest (7.12 t ha⁻¹). In AMMI, environment accounted for 62.67% of total variation, genotypes 2.85%, and G×E 10.28%, while IPCA1 + IPCA2 captured 67.86% of the G×E variation. Genotypes GR3, GR10, GR28, and Andina exhibited low AMMI stability values (ASV; high stability) and favorable genotype selection index (GSI) values (high yield and stability). In conclusion, GR10 and GR28 were identified as the most promising afila genotypes for on-farm validation in the Andean region of Nariño due to their yield and stability, while Andina remained the commercial check cultivar used to benchmark the agronomic value of the afila lines. These findings inform parent selection and support environment-specific recommendations for green pod production in climbing pea.</p>

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Genotype–Environment Interaction in Afila Pea (Pisum sativum L.) in Southwestern Colombia

  • 期刊论文

  • 发表日期：

    2026年2月24日

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  • Sandra Lorena Álvarez Ordoñez,
  • Oscar Eduardo Checa Coral

摘要

Pea is a cornerstone crop in the Andean economy; however, environmental variability hampers the identification of stable materials with predictable performance. Ten climbing (vining) pea genotypes—eight carrying the afila (af) gene and two commercial checks (Andina and Sindamanoy)—were evaluated across nine environments in southwestern Colombia over two cropping seasons. Genotype × environment (G×E) interaction and green pod yield stability were assessed using the Eberhart–Russell and AMMI models. Combined ANOVA revealed significant effects of genotype, environment, and G×E. Under Eberhart–Russell, GR10 and GR28 showed β₁ ≈ 1 with non-significant S²d, indicating broad adaptation and high yield predictability; GR2 (β₁ > 1) was specifically adapted to favorable environments, whereas Sindamanoy (β₁ < 1) to unfavorable environments, both with significant S²d (unstable performance). Among environments, Puerres recorded the highest mean yield (17.14 t ha⁻¹) and Pasto the lowest (7.12 t ha⁻¹). In AMMI, environment accounted for 62.67% of total variation, genotypes 2.85%, and G×E 10.28%, while IPCA1 + IPCA2 captured 67.86% of the G×E variation. Genotypes GR3, GR10, GR28, and Andina exhibited low AMMI stability values (ASV; high stability) and favorable genotype selection index (GSI) values (high yield and stability). In conclusion, GR10 and GR28 were identified as the most promising afila genotypes for on-farm validation in the Andean region of Nariño due to their yield and stability, while Andina remained the commercial check cultivar used to benchmark the agronomic value of the afila lines. These findings inform parent selection and support environment-specific recommendations for green pod production in climbing pea.