Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon

This study evaluated the suitability of three floodplain environments near Iquitos for cowpea cultivar recommendation. It also estimated the adaptability and phenotypic stability of 12 cowpea lines evaluated in 2004 and compared the climatic conditions between 2004 and the period of 2020–2024. Field...

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Autores principales: Gonzales Vega, Rodrigo, Ticona Benavente, César Augusto, Ramirez Chung, José, Campos Cedano, Johnny Carlos, Tejada Alvarado, José Jesús
Formato: Preprint
Lenguaje:Inglés
Publicado: Preprints.org 2025
Materias:
Acceso en línea:http://hdl.handle.net/20.500.12955/2859
https://doi.org/10.20944/preprints202509.0228.v1
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author Gonzales Vega, Rodrigo
Ticona Benavente, César Augusto
Ramirez Chung, José
Campos Cedano, Johnny Carlos
Tejada Alvarado, José Jesús
author_browse Campos Cedano, Johnny Carlos
Gonzales Vega, Rodrigo
Ramirez Chung, José
Tejada Alvarado, José Jesús
Ticona Benavente, César Augusto
author_facet Gonzales Vega, Rodrigo
Ticona Benavente, César Augusto
Ramirez Chung, José
Campos Cedano, Johnny Carlos
Tejada Alvarado, José Jesús
author_sort Gonzales Vega, Rodrigo
collection Repositorio INIA
description This study evaluated the suitability of three floodplain environments near Iquitos for cowpea cultivar recommendation. It also estimated the adaptability and phenotypic stability of 12 cowpea lines evaluated in 2004 and compared the climatic conditions between 2004 and the period of 2020–2024. Field trials were conducted using a randomized complete block design with 12 treatments and two replications. Five traits were assessed: grain yield, number of pods per plant, days to flowering, days to physiological maturity, and days to harvest. Combined ANOVA revealed significant environmental effects for all traits. Analyses using Duncan’s means test, GGE biplot, and AMMI indicated that the three sites are contrasting. The Annicchiarico index, GGE biplot, and AMMI analyses identified line CAR 3010 as having superior adaptability and stability. Paired t-tests showed that the conditions in 2020-2024 were warmer and drier than those in 2004. Therefore, Muyuy, Rafael Belaunde, and San Miguel are suitable locations for testing new cowpea lines, and CAR 3010 line is recommended for inclusion in cowpea breeding programs in the Peruvian Amazon in response to ongoing climate change.
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spelling INIA28592025-09-17T14:34:15Z Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon Gonzales Vega, Rodrigo Ticona Benavente, César Augusto Ramirez Chung, José Campos Cedano, Johnny Carlos Tejada Alvarado, José Jesús GxE interaction Yield stability Annicchiarico index GGE biplot AMMI Tropical agriculture Multienvironmental trials Interacción GxE Estabilidad del rendimiento Índice de Annicchiarico Biplot GGE Agricultura tropical Ensayos multiambientales https://purl.org/pe-repo/ocde/ford#4.01.01 Caupí; Cowpeas; Vigna unguiculata; Vigna unguiculata; Rendimiento de cultivos; Crop yield; Río Amazonas; Amazon River; Leguminosa; Legumes This study evaluated the suitability of three floodplain environments near Iquitos for cowpea cultivar recommendation. It also estimated the adaptability and phenotypic stability of 12 cowpea lines evaluated in 2004 and compared the climatic conditions between 2004 and the period of 2020–2024. Field trials were conducted using a randomized complete block design with 12 treatments and two replications. Five traits were assessed: grain yield, number of pods per plant, days to flowering, days to physiological maturity, and days to harvest. Combined ANOVA revealed significant environmental effects for all traits. Analyses using Duncan’s means test, GGE biplot, and AMMI indicated that the three sites are contrasting. The Annicchiarico index, GGE biplot, and AMMI analyses identified line CAR 3010 as having superior adaptability and stability. Paired t-tests showed that the conditions in 2020-2024 were warmer and drier than those in 2004. Therefore, Muyuy, Rafael Belaunde, and San Miguel are suitable locations for testing new cowpea lines, and CAR 3010 line is recommended for inclusion in cowpea breeding programs in the Peruvian Amazon in response to ongoing climate change. 2025-09-17T14:34:14Z 2025-09-17T14:34:14Z 2025-09-03 info:eu-repo/semantics/preprint Gonzales, R., Ticona-Benavente, C. A., Ramirez-Chung, J., Campos-Cedano, J., & Tejada-Alvarado, J. J. (2025). Adaptability and phenotypic stability of early-maturing cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon. Preprints. https://doi.org/10.20944/preprints202509.0228.v1 http://hdl.handle.net/20.500.12955/2859 https://doi.org/10.20944/preprints202509.0228.v1 eng Preprints.org info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ application/pdf application/pdf Preprints.org CH Instituto Nacional de Innovación Agraria Repositorio Institucional - INIA
spellingShingle GxE interaction
Yield stability
Annicchiarico index
GGE biplot
AMMI
Tropical agriculture
Multienvironmental trials
Interacción GxE
Estabilidad del rendimiento
Índice de Annicchiarico
Biplot GGE
Agricultura tropical
Ensayos multiambientales
https://purl.org/pe-repo/ocde/ford#4.01.01
Caupí; Cowpeas; Vigna unguiculata; Vigna unguiculata; Rendimiento de cultivos; Crop yield; Río Amazonas; Amazon River; Leguminosa; Legumes
Gonzales Vega, Rodrigo
Ticona Benavente, César Augusto
Ramirez Chung, José
Campos Cedano, Johnny Carlos
Tejada Alvarado, José Jesús
Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon
title Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon
title_full Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon
title_fullStr Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon
title_full_unstemmed Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon
title_short Adaptability and phenotypic stability of Early-Maturing Cowpea (Vigna unguiculata (L.) Walp.) lines in the Peruvian Amazon
title_sort adaptability and phenotypic stability of early maturing cowpea vigna unguiculata l walp lines in the peruvian amazon
topic GxE interaction
Yield stability
Annicchiarico index
GGE biplot
AMMI
Tropical agriculture
Multienvironmental trials
Interacción GxE
Estabilidad del rendimiento
Índice de Annicchiarico
Biplot GGE
Agricultura tropical
Ensayos multiambientales
https://purl.org/pe-repo/ocde/ford#4.01.01
Caupí; Cowpeas; Vigna unguiculata; Vigna unguiculata; Rendimiento de cultivos; Crop yield; Río Amazonas; Amazon River; Leguminosa; Legumes
url http://hdl.handle.net/20.500.12955/2859
https://doi.org/10.20944/preprints202509.0228.v1
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