Caracterización agromorfológica de accesiones de phaseolus spp., en la región Amazonas, Perú: Agromorphological characterization of Phaseolus spp., accessions in Amazonas region, Peru

Peru has a high genetic diversity of Andean legumes, especially of the genus Phaseolus. Its identification through agromorphological descriptors is essential to promote its conservation, which may allow the development of genetic improvement studies. Under this scenary, the objective of the present...

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Veröffentlicht in:Bioagro 2024, Vol.36 (2), p.129-142
Hauptverfasser: Ayala, Rosmery, Fernández, Elizabeth, Malqui, Roiber, Duarez, Edwin, Vilca Valqui, Nuri, Vásquez, Jheiner
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Zusammenfassung:Peru has a high genetic diversity of Andean legumes, especially of the genus Phaseolus. Its identification through agromorphological descriptors is essential to promote its conservation, which may allow the development of genetic improvement studies. Under this scenary, the objective of the present work was to characterize morphologically and agronomically 58 accessions of beans (Phaseolus spp.) deposited in the germplasm bank of the Instituto Nacional de Innovación Agraria del Perú. For this purpose, 24 quantitative and 18 qualitative descriptors were used to evaluate the phenology of each accession. Cluster analysis and multiple correspondence analysis identified the formation of four groups according to their similar characteristics. The largest number of accessions were located in the third and fourth groups. However, the seven accessions that made up the second group exhibited promising characteristics for their high productivity (2777.86 kg·ha-1 ), with white seeds, of acceptable dimensions, with early epigeal germination (10 days), ovate-lanceolate leaves of indeterminate growth (174.79 cm plant height) that develop numerous guides. Also,they have a prolonged flowering (33.86 days) with pink and white petals, which gave rise to a greater number of green pods (66.71 per plant) until they reach physiological maturity. These qualities make them a valuable source for the appropriate implementation of future breeding programs El Perú cuenta con una alta diversidad genética de leguminosas andinas, especialmente del género Phaseolus. Su identificación a través de descriptores agromorfológicos es trascendental para impulsar su conservación y desarrollar estudios de mejoramiento genético. Bajo este escenario, el objetivo del presente trabajo fue caracterizar morfológica y agronómicamente 58 accesiones de frijol (Phaseolus spp) depositadas en el banco de germoplasma del Instituto Nacional de Innovación Agraria del Perú. Para ello, se utilizaron 24 descriptores cuantitativos y 18 cualitativos que se evaluaron en la fenología de cada accesión. El análisis de conglomerados y de correspondencias múltiples, permitió identificar la formación de cuatro grupos en función de sus características semejantes. El mayor número de accesiones se localizaron en el tercer y cuarto grupo. Sin embargo, las siete accesiones que conformaron el segundo grupo, exhibieron características promisorias por presentar alta productividad (2777,86 kg·ha-1), con semillas blancas, de aceptabl
ISSN:2521-9693
1316-3361